Título:

Environmentally Friendly Supercapacitors

Autor:

Ana Karina Cuentas-Gallegos, Daniella Pacheco Catalán, Margarita Miranda Hernández

Resumen:

This chapter is focused on promoting these environmentally friendly devices based on aqueous electrolytes, using an asymmetric configuration, and promote the use of less toxic components during assembly (current collectors, separators, and binders); in order to move forward to a greener device with high speci...



Título:

Synthesis and characterization of electrospun iron-doped lithium titanate/carbon nanofiber mats

Autor:

Rubi A. Hernandez-Carrillo, Nora A. Garcia-Gomez, Domingo I. Garcia-Gutierrez, Lorena L. Garza-Tovar and Eduardo M. Sanchez

Resumen:

In this paper, nanofibers composed of spinel Li4Ti5-xFexO12 (x = 0 and 0.1)/carbon were synthetized by electrospinning method. Thermal analysis of the prepared fiber was conducted by differential thermal/thermogravimetric analysis, crystal structure was characterized by X-ray diffraction, morphology and compo...



Título:

Síntesis solvotérmica de Li4Ti5O12 dopado con Fe(III) para su aplicación como ánodo en baterías de ion litio

Autor:

R.A. Hernández-Carrillo, E.M. Sánchez-Cervantes, J.G. Ramos-Sánchez, J.G. Vázquez-Arenas e I. González

Resumen:

En los últimos años, el titanato de litio, Li4Ti5O12, se ha perfilado como material anódico alternativo a los tradicionales electrodos carbonáceos. Este trabajo presenta la preparación de microesferas de Li4Ti5-xFexO12 (x = 0, 0.1 y 0.2) por vía solvotermal. Las partículas obtenidas presentaron un tama...



Título:

Obtención del compósito SiO2-C a partir de cáscara de trigo y su aplicación como ánodo para batrías de ion litio

Autor:

Francisco Javier García Partida

Resumen:

El propósito de esta investigación es el aprovechamiento de biorecursos que desecha la industria agraria para la obtención de un compósito de SiO2-C que será utilizado como ánodo en una batería de ion litio. La caracterización de los materiales obtenidos se llevó a cabo por DRX, FTIR, SEM y EDX para ...



Título:

25 Aluminum doped Na3V2(PO4)2F3 via sol-gel Pechini method as cathode material for lithium ion batteries

Autor:

Nayely Pineda Aguilar, Víctor J. Gallegos-Sánchez, L.C. Torres-González, Eduardo M. Sánchez and Lorena L. Garza-Tovar

Resumen:

The solid solution series Na3V2-xAlx(PO4)2F3 (where x = 0, 0.02, 0.05, and 0.1) powders have been prepared using the Pechini method to study the effect of aluminum doping on the electrochemical properties of these cathode materials for lithium ion batteries. The structure, composition, and morphology of t...



Título:

"Electrochemical Fabrication and Characterization of Silicon Microwire Anodes for Li Ion Batteries"

Autor:

S. Nöhren, E. Quiroga-González, J. Carstensen, H. Föll

Resumen:

With a technique allowing for large-scale production, which is based on electrochemical etching, silicon microwire anodes for Li ion batteries anodes are produced. The wires exhibit high areal capacity due to their diameters in the micron-range, and high cycling stability due to the formation of a homogeneous...



Título:

"Scalable processing and capacity of Si microwire array anodes for Li ion batteries"

Autor:

E. Quiroga-González, J. Carstensen, H. Föll

Resumen:

Si microwire array anodes have been prepared by an economical, microelectronics compatible method based on macropore etching. In the present report, evidence of the scalability of the process and the areal capacity of the anodes is presented. The anodes exhibit record areal capacities for Si-based anodes. The...



Título:

"Studies on preventing Li dendrite formation in Li-S batteries by using pre-lithiated Si microwire anodes"

Autor:

M. Hagen, E. Quiroga-González, S. Dörfler, G. Fahrer, J. Tübke, M. J. Hoffmann, H. Althues, R. Speck, M. Krampfert, S. Kaskel, H. Föll

Resumen:

In this work, detailed studies on Li dendrite formation in Li–S Batteries are reported. Li dendrites can grow rapidly, may pierce through or can easily grow around the separator. Dendrites can even lead to short circuits when cathode and/or anode are wrapped with the separator. By replacing the Li metal ano...



Título:

"Optimal conditions for fast charging and long cycling stability of silicon microwire anodes for lithium ion batteries, and comparison with the performance of other Si anode concepts"

Autor:

E. Quiroga-González, J. Carstensen, H. Föll

Resumen:

Cycling tests under various conditions have been performed for lithium ion battery anodes made from free-standing silicon microwires embedded at one end in a copper current collector. Optimum charging/discharging conditions have been found for which the anode shows negligible fading (< 0.001%) over 80 cycl...



Título:

How to Make Optimized Arrays of Si Wires Suitable as Superior Anode for Li-ion Batteries

Autor:

E. Quiroga-González, E. Ossei-Wusu, J. Carstensen, H. Föll

Resumen:

The fabrication process to produce Si wires with superior structural properties for application in Li-ion batteries is described. The process is based on the electrochemical etching of pores in Si, followed by a chemical over-etching step. The wires obtained have a quadratic cross section of around 1.5 x 1.5 ...



Título:

“Carbon nanofiber and PEDOT-PPS bylayer systems as electrodes for symmetric and asymmetric Electrochemical capacitor cells”

Autor:

A.K Cuentas-Gallegos, Marina E Rincón J. Power Sour.

Resumen:

“Carbon nanofiber and PEDOT-PPS bylayer systems as electrodes for symmetric and asymmetric Electrochemical capacitor cells”...



Título:

“Electrochemical Supercapacitors based on Novel Hybrid Materials made of Carbon Nanotubes and Polyoxometalates”

Autor:

A. Karina Cuentas-Gallegos, Rosa Martínez-Rosales, Mihaela Baibarac, Pedro Gómez-Romero, and Marina E. Rincón.

Resumen:

We have characterized symmetric solid-state supercapacitors in swagelok cells using film electrodes made of novel hybrid materials based on multiwalled carbon nanotubes (CNT) and phosphomolybdate polyanion (Cs-PMo12) with PVA as binder. These hybrid materials were carried out by Cs-PMo12 adhesion onto previou...



Título:

”The Effect of Binder in Electrode Materials for Capacitance Improvement and EDLC Binder-free Cell Design”

Autor:

R. López-Chavéz, A.K. Cuentas-Gallegos.

Resumen:

In the present work we show results related with the influence of the binder type used to elaborate active electrodes made of activated carbon (DLC) for the assembly of supercapacitor cells. A Nafion 5%w solution and/or Kinar Flex (Polyvinylidene fluoride, PVDF) were used as binders at different concentration...



Título:

“Capacitance Improvement of Carbon Aerogels by the immobilization of Polyoxometalates Nanoparticles”

Autor:

D.A. Baeza-Rostro, A. K. Cuentas-Gallegos.

Resumen:

A hybrid material based on the immobilization of H3PMo12O40 polyoxometalate nanoparticles (POM) was obtained by using an activated carbon aerogel (ACPQ2-100) matrix, and was tested as a potential electrode material for a supercapacitor cell. A chemical activation with KOH was carried out in the carbon aerogel...



Título:

“Porosity and Surface Modifications on Carbon Materials for Capacitance Improvement”

Autor:

A.K. Cuentas-Gallegos, N. Rayón-López, L.M. Mejía, H. Villafán Vidales, M. Miranda-Hernández, M. Robles, J. Muñiz-Soria.

Resumen:

Supercapacitors (SC) are energy storage devices with higher power but lower energy density than Li batteries. SC store energy based on two mechanisms: double layer capacitance (non-Faradaic) and pseudocapacitance (faradaic). Porous carbon materials have been extensively used as electrodes in SC, where their g...



Título:

Effect of carbonaceous support between graphite oxide and reduced graphene oxide with anchored Co3O4 microspheres as electrode-active materials in a solid-state electrochemical capacitor

Autor:

Parra-Elizondo, V., Escobar-Morales, B., Morales, E., & Pacheco-Catalán, D.

Resumen:

Hydrothermally synthesized Co3O4 microspheres were anchored to graphite oxide (GO) and thermally reduced graphene oxide (rGO) composites at different cobalt weight percentages (1, 10, and 100 wt%). The composite materials served as the active materials in bulk electrodes for two-electrode cell electrochemical...



Título:

A novel stand-alone mobile photovoltaic/wind turbine/ultracapacitor/battery bank hybrid power system

Autor:

Espinosa-Trujillo, M. J., Flota-Bañuelos, M., Pacheco-Catalán, D., Smit, M. A., & Verde-Gómez, Y

Resumen:

This paper presents a new mobile hybrid system using a photovoltaic array, a wind turbine, an ultracapacitor, and a battery bank for grid-independent applications in the city of Cancun, Mexico. A main controller is proposed to manage these different power sources. This controller permits autonomous operation ...



Título:

Electrochemical study of H3PMo12 retention on Vulcan carbon grafted with NH2 and OH groups

Autor:

Cuentas-Gallegos, A. K., López-Cortina, S., Brousse, T., Pacheco-Catalán, D., Fuentes-Quezada, E., Mosqueda, H., & Orozco-Gamboa, G

Resumen:

In this work, we show a comparative study based on the effects of specific chemical functional groups (–OH, –NH2), grafted on Vulcan carbon (VC) with the incorporation of a specific polyoxometalate (POM), PMo12 (H3PMo12O40), to improve electrochemical performance. We observed a decrease in the specific su...



Título:

Batteries-supercapacitors storage systems for a mobile hybrid renewable energy system

Autor:

Sandoval, J. M., Espinosa-Trujillo, M. J., Flota-Bañuelos, M., Durán-Gómez, J. L., Verde-Gómez, Y. V., & Pacheco-Catalán, D. E.

Resumen:

The most popular energy storage system for renewable energy are batteries modules, due to their high energy density and portable applications, nevertheless, they are unable to release all its stored energy and the high initial current demand on electrical machines like engines or compressors, cause stress in ...



Título:

Characterization of Composite Mesoporous Carbon/Conducting Polymer Electrodes Prepared by Chemical Oxidation of Gas-Phase Absorbed Monomer for Electrochemical Capacitors

Autor:

Pacheco-Catalán D, Smit MA, Morales E

Resumen:

Characterization of Composite Mesoporous Carbon/Conducting Polymer Electrodes Prepared by Chemical Oxidation of Gas-Phase Absorbed Monomer for Electrochemical Capacitors...



Título:

Sustainable application of pecan nutshell waste: Greener synthesis of Pd-based nanocatalysts for electro-oxidation of methanol

Autor:

Edgar Eduardo Mondaca

Resumen:

Palladium-based electrocatalysts are widely used in alkaline direct alcohol fuel cells. The synthesis and characterization of carbon-supported bimetallic nanoparticles (NP) of AuPd and AgPd is described using pecan nutshell extract (Carya illinoinensis) which serves as both, reducing and the stabilizing agent...



Título:

Charge Transport Improvement in Nafion Membrane by Simoultaneous Microwave Synthesis and Deposition of YSZ

Autor:

Edgar Eduardo Mondaca

Resumen:

The improvement of water retention properties of Nafion membranes is a key feature that could simplify its operation and increase the reliability of Proton Exchange Membrane Fuel Cells (PEMFC). In this work, nanostructured YSZ was synthesized in a microwave reactor and their properties were evaluated by TEM a...



Título:

Influence of TiO 2 as Filler on the Discharge Characteristics of a Proton Battery

Autor:

Edgar Eduardo Mondaca

Resumen:

Different concentrations of TiO2 dispersed nano-composite proton conducting polymer electrolyte membranes were prepared using solution casting technique. Fourier Transform Infrared Spectroscopic analysis was carried out to determine the vibrational investigations about the prepared membranes. Variation of con...



Título:

Photohole Trapping Induced Platinum Cluster Nucleation on the Surface of TiO 2 Nanoparticles

Autor:

Edgar Eduardo Mondaca

Resumen:

The photocurrent response of TiO2 nanoparticles synthesized via the sol–gel process was studied in the presence of methanol, ethanol, and isopropanol. The nanocrystalline nature of photoelectrodes showed an important photocurrent in the presence of alcohol following the order methanol ≈ ethanol > isopr...



Título:

“Mesoporous LiFeBO3/C Pechini synthesis for positive electrode in Li-ion batteries”

Autor:

VJ Gallegos-Sánchez, LC Torres-González, EM Sánchez, L Garza-Tovar

Resumen:

Synthesis of mesoporous LiFeBO<sub>3</sub>/C composite has been achieved using Pechini sol-gel method. Thermal properties of fresh sol-gel samples were investigated by simultaneous thermogravimetric and differential thermal analysis (TGA-DTA). X-ray powder diffraction (XRD) and Fourier transform i...



Título:

Synthesis and characterization of electrospun iron-doped lithium titanate/carbón nanofiber mats

Autor:

RA Hernandez-Carrillo, NA García-Gómez, DI García-Gutierrez, LL Garza-Tovar, EM Sánchez

Resumen:

In this paper, nanofibers composed of spinel Li4Ti5−xFexO12 (x = 0 and 0.1)/carbon were synthetized by electrospinning method. Thermal analysis of the prepared fiber was conducted by differential thermal/thermogravimetric analysis, crystal structure was characterized by X-ray diffraction, morphology and com...



Título:

Novel preparation of NiS submicron particles in [BMIM][BF4] ionic liquid using ultrasonic irradiation

Autor:

SM de la Parra-Arciniega, NA García-Gómez, DI Garcia-Gutierrez, P Salinas-Estevane, EM Sánchez

Resumen:

Novel preparation of NiS submicron particles in [BMIM][BF4] ionic liquid using ultrasonic irradiation...



Título:

Electrochemical behavior of TiO2/carbon dual nanofibers

Autor:

NA Garcia-Gómez, HA Mosqueda, DI Garcia-Gutierrez, EM Sánchez

Resumen:

The charge transfer processes are favored in dual nanofibers composed by TiO2Rutile-Csemigraphitic/Csemigraphitic over other systems such as TiO2Anatase&Rutile-Camorphous/Camorphous and TiO2Rutile-Camorphous, dual and single nanofibers respectively. The study of electrochemical impedance spectroscopy (EIS) sh...



Título:

Conductivity and viscosity properties of associated ionic liquids phosphonium orthoborates

Autor:

A Garcia, LC Torres, KP Padmasree, MG Benavides & EM Sánchez

Resumen:

A new group of room temperature molten salts based on asymmetric isobutyl(trihexyl)phosphonium cation with different chelated orthoborate anions are presented in this report. The physicochemical properties of these compounds as glass transition temperature, thermal stability, viscosity and conductivity are de...



Título:

Synthesis and Characterization of Zwitterionic Polymers with a Flexible Lateral Chain J. Phys

Autor:

Judith Cardoso, Olivia Soria-Arteche, Gerardo Vázquez, Omar Solorza, and Ignacio González.

Resumen:

In this work we report the synthesis and physical properties (thermal stability, diffraction patterns, and conductivity measurements) of a methacrylate-type polymer with zwitterionic pendant groups. The parent polymer, poly(sulfobutylbetaine of 12-ethyl-3,6,9-trioxa-12-azatetradec-1-yl 2-methylacrylate) (here...



Título:

Tacticity Influence on the Electrochemical Reactivity of Group Transfer Polymerization-Synthesized PTMA. J. Phys

Autor:

HugoA. Loṕez-Peña,Lindsay S.Hernańdez-Muñoz,BernardoA.Frontana-Uribe, Felipe J.González, Ignacio González, Carlos Frontana, and Judith Cardoso

Resumen:

Spectroscopic, thermal, and electrochemical characterization results are presented for the redox active polymer poly(2,2,6,6-tetramethyl-1-piperinidyloxy-4-yl methacrylate) or PTMA, synthesized by group transfer polymerization (GTP), and its precursors 4-hydroxy-tetramethylpiperidine-N-oxyl (HO-TEMPO) and 4-m...



Título:

Nanocomposite polymer electrolytes based on poly(poly(ethylene glycol)methacrylate), MMT or ZSM-5 formulated with LiTFSI and PYR11TFSI for Li- ion batteries

Autor:

J. Cardoso, A. Mayren, I. C. Romero-Ibarra, D. P. Nava and J. Vazquez-Arenas

Resumen:

Novel poly(poly(ethylenglycol)methacrylate) (pPEGMA) nanocomposite electrolytes (NE) based on montmorillonite (MMT) and zeolite (ZSM-5) with lithium bis(trifluoromethanesulfonyl)imide salt (LiTFSI) and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (ionic liquid, PYR11TFSI) are synthetized us...



Título:

An experimental and theoretical correlation to account for the effect of LiPF6 concentration on the ionic conductivity of poly(poly (ethylene glycol) methacrylate)

Autor:

D.P. Nava , G. Guzmán , J. Vazquez-Arenas , J. Cardoso , B. Gomez , I. Gonzalez

Resumen:

This study is intended to analyze Li+ ion conduction across amorphous poly(poly(ethylene glycol) methacrylate) (pPEGMA) electrolyte using high concentrations of lithium hexafluorophosphate (LiPF6). A monomer (PEGMA) comprised of eight units of ethylene glycol is thermally polymerized via free radicals. Physic...



Título:

Design of a zwitterion polymer electrolyte based on poly[poly (ethylene glycol) methacrylate]: the effect of sulfobetaine group on thermal and electrochemical properties

Autor:

Gregorio Guzmán, Dora P. Nava, Jorge Vazquez-Arenas, Judith Cardoso

Resumen:

Polymer electrolytes are expected to play an overriding role in the development of sustainable lithium ion batteries. In this study, amorphous poly(poly(ethylene glycol) methacrylate) (pPEGMA) and pPEGMA functionalized with sulfobetaine pendants (pMPS8) are synthesized, and subsequently formulated with LiPF6 ...



Título:

Synthesis and characterization of electrospun iron-doped lithium titanate/carbon nanofiber mats

Autor:

Rubi A. Hernández-Carrillo, Nora A. García-Gómez, Domingo I. García-Gutiérrez, Lorena L. Garza-Tovar and Eduardo M. Sánchez

Resumen:

In this paper, nanofibers composed of spinel Li4Ti5−xFexO12 (x = 0 and 0.1)/carbon were synthetized by electrospinning method. Thermal analysis of the prepared fiber was conducted by differential thermal/thermogravimetric analysis, crystal structure was characterized by X-ray diffraction, morphology and com...



Título:

Mesoporous LiFeBO3/C by Pechini synthesis for positive electrode in Li-ion batteries

Autor:

Víctor J. Gallegos-Sánchez, L.C. Torres-González, Eduardo M. Sánchez, Lorena L. Garza-Tovar

Resumen:

Synthesis of mesoporous LiFeBO<sub>3</sub>/C composite has been achieved using Pechini sol-gel method. Thermal properties of fresh sol-gel samples were investigated by simultaneous thermogravimetric and differential thermal analysis (TGA-DTA). X-ray powder diffraction (XRD) and Fourier transform i...



Título:

Effect of the reaction time on the microstructure and porous texture of carbon materials obtained by chlorination of Ti(C5H5)Cl2

Autor:

D.J. Araujo-Perez, P. Gonzalez-García, M. Poisot, L. Garcia-Gonzalez

Resumen:

Carbon materials have been obtained by the chlorination reaction of Ti(C5H5)Cl2 at 900 °C, varying the reaction time at 30, 60, 90 and 120 min. The average microstructure, studied by X ray powder diffraction, suggest that these materials consist mainly of disordered carbon with low graphitization degree (fro...



Título:

Nanostructure, porosity and electrochemical performance of chromium carbide derived carbons

Autor:

Pedro González-García, Adriana M. Navarro-Suárez, Javier Carretero-González, Esteban Urones-Garrote, David Ávila-Brande, Luis C. Otero-Díaz

Resumen:

This paper presents the results from the investigation of the influence of the chlorination temperature, the carbide crystal structure, the Cr/C ratio and physicochemical properties of CrCl3 on the morphology, nanostructure, textural properties and electrochemical performance of CDCs. Electron microscopy and ...



Título:

Microstructure and surface properties of lignocellulosic-based activated carbons

Autor:

P. González-García, T.A. Centeno, E. Urones-Garrote, D. Ávila-Brande, L.C. Otero-Díaz

Resumen:

Low cost activated carbons have been produced via chemical activation, by using KOH at 700 °C, from the bamboo species Guadua Angustifolia and Bambusa Vulgaris Striata and the residues from shells of the fruits of Castanea Sativa and Juglans Regia as carbon precursors. The scanning electron microscopy microg...



Título:

Centrifugal Spinning: An Alternative for Large Scale Production of Silicon–Carbon Composite Nanofibers for Lithium Ion Battery Anodes

Autor:

Nava R, Cremar L, Agubra V, Sánchez J, Alcoutlabi M, Lozano K.

Resumen:

Composites made of silicon nanostructures in carbon matrixes are promising materials for anodes in Li ion batteries given the synergistic storage capacity of silicon combined with the chemical stability and electrical conductivity of carbonaceous materials. This work presents the development of Si/C composite...



Título:

Synthesis, Photophysical and Supramolecular Study of π-Conjugated (diethylene glicol methyl ether) Benzoateethynylene Oligomers and Polymers Polymer Chemistry

Autor:

D. Meza,a E. Arias,*a I. Moggio,a J. Romero,a J. M. Mata,a R. M. Jiménez-Barrera,a R. F. Ziolo,a O. Rodrígueza and M. Ottonellib

Resumen:

We report on the synthesis of a trimer, pentamer, heptamer and a polymer of the (benzoate)ethynylene type bearing highly polar diethylene glycol methyl ethers as side chains. All of the materials were characterized by 1H, DEPT-135, APT, 13C NMR, UV-Vis, static and dynamic fluorescence spectroscopy. The X-ray ...



Título:

Mechanosynthesis of a phenylenedivinylidenebisquinoline

Autor:

A.R.Gutiérreza. R.A.Vázqueza. .I.Moggiob. E.Ariasb. O.Coreñoc. J.L.Maldonadod. G.Ramos-Ortízd. O.Rodríguezb .R.M.Jiménez-Barrerab

Resumen:

A phenylenedivinylidenebisquinoline oligomer was obtained by reacting quinaldine with 2,5-bis(octyloxy)terephtalaldehyde via the Knoevenagel reaction by mechanosynthesis. The product was characterized by 1H Homo-J-Resolved NMR, 13C NMR, FT-IR, Fluorescence, UV–Vis spectroscopy and by FAB+ mass spectrometry....



Título:

Modificación Superficial Asistida con Energía Ultrasónica de Nanotubos de Carbono con Ácido Maléico, Ácido Malónico y Ácido Tartárico Avances en Química

Autor:

Aidé Sáenz-Galindo , Karla Fabiola Rodríguez-Ramírez , Wendy Melisa Rubio-González , Leticia Barajas-Bermúdez , Leticia A. Ramírez-Mendoza , Carlos A. Ávila-Orta , Rosa Martha Jiménez-Barrera

Resumen:

Surface modification of multi-walled carbon nanotubes (MWCNT) was performed using three different organic acids as substrates. Modification was assisted with ultrasonic energy, which helped dispersion and surface modification of MWCNT. Aqueous solutions saturated of the organic acids were employed, at a tempe...



Título:

Synthesis, Photophysical and Supramolecular Study of π-Conjugated (diethylene glicol methyl ether) Benzoateethynylene Oligomers and Polymers Polymer Chemistry

Autor:

D. Meza,a E. Arias,*a I. Moggio,a J. Romero,a J. M. Mata,a R. M. Jiménez-Barrera,a R. F. Ziolo,a O. Rodrígueza and M. Ottonellib

Resumen:

We report on the synthesis of a trimer, pentamer, heptamer and a polymer of the (benzoate)ethynylene type bearing highly polar diethylene glycol methyl ethers as side chains. All of the materials were characterized by 1H, DEPT-135, APT, 13C NMR, UV-Vis, static and dynamic fluorescence spectroscopy. The X-ray ...



Título:

Mechanosynthesis of a Phenylenedivinylidenebisquinoline.

Autor:

A.R.Gutiérrez. R.A.Vázquez. I.Moggio. E.Arias. O.Coreñoc. J.L.Maldonado. G.Ramos-Ortíz. O.Rodríguez. R.M.Jiménez-Barrera

Resumen:

A phenylenedivinylidenebisquinoline oligomer was obtained by reacting quinaldine with 2,5-bis(octyloxy)terephtalaldehyde via the Knoevenagel reaction by mechanosynthesis. The product was characterized by 1H Homo-J-Resolved NMR, 13C NMR, FT-IR, Fluorescence, UV–Vis spectroscopy and by FAB+ mass spectrometry....



Título:

Modificación Superficial Asistida con Energía Ultrasónica de Nanotubos de Carbono con Ácido Maléico, Ácido Malónico y Ácido Tartárico Avances en Química

Autor:

Aidé Sáenz-Galindo , Karla Fabiola Rodríguez-Ramírez , Wendy Melisa Rubio-González , Leticia Barajas-Bermúdez , Leticia A. Ramírez-Mendoza , Carlos A. Ávila-Orta , Rosa Martha Jiménez-Barrera

Resumen:

Surface modification of multi-walled carbon nanotubes (MWCNT) was performed using three different organic acids as substrates. Modification was assisted with ultrasonic energy, which helped dispersion and surface modification of MWCNT. Aqueous solutions saturated of the organic acids were employed, at a tempe...



Título:

Nanocomposite polymer electrolytes based on poly (poly(ethylene glycol) methacrylate), MMT or ZSM-5 formulated with LiTFSI and PYR11TFSI for Li-ion batteries

Autor:

Cardoso J., Mayrén A., Romero-Ibarra I.C., Nava D., Vazquez-Arenas J

Resumen:

Novel poly(poly(ethylenglycol)methacrylate) (pPEGMA) nanocomposite electrolytes (NE) based on montmorillonite (MMT) and zeolite (ZSM-5) with lithium bis(trifluoromethanesulfonyl)imide salt (LiTFSI) and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (ionic liquid, PYR11TFSI) are synthetized us...



Título:

Effect of the reaction time on the microstreucture and porous texture of carbon materials obtained by chlorination reaction of Ti(C5H5)Cl2

Autor:

D.J. Araujo-Pérez, P. González-García, M.Poisot, L. García-González

Resumen:

Carbon materials have been obtained by the chlorination reaction of Ti(C5H5)Cl2 at 900 °C, varying the reaction time at 30, 60, 90 and 120 min. The average microstructure, studied by X ray powder diffraction, suggest that these materials consist mainly of disordered carbon with low graphitization degree (fro...



Título:

First assessment of Li2O-Bi2O3 ceramic oxides for high temperature carbon dioxide capture

Autor:

Briz-López E. M., Ramírez-Moreno M.J., Romero-Ibarra I.C., Gómez-Yáñez C., Pfeiffer H., Ortiz-Landeros J

Resumen:

The capacity to capture CO2, was determined in several stoichiometric compositions in the Li2O-Bi2O3 system. The compounds (Li7BiO6, Li5BiO5, Li3BiO4 and LiBiO2 phases), were synthesized via solid-state reaction and characterized by X-ray diffraction, scanning electron microscopy and N2 adsorption techniques....



Título:

Biodiesel production from soybean and Jatropha oils using cesium impregnated sodium zirconate as a heterogeneous base catalyst

Autor:

Torres-Rodríguez D.A., Romero-Ibarra I.C., Ibarra I.A., Pfeiffer H

Resumen:

Cesium modified sodium zirconate (Cs-Na2ZrO3) was prepared by ionic exchange from sodium zirconate (Na2ZrO3), which was synthesized via a solid state reaction. Both ceramics, i.e., pristine Na2ZrO3 and the Cs-Na2ZrO3, were used as basic heterogeneous catalysts in biodiesel production. Soybean and Jatropha oil...




 
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