Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

One-step oxidehydration of glycerol to acrylic acid using ETS-10-like vanadosilicates

Texto completo
Autor(es):
Paula, Alex Silva ; Possato, Gustavo ; Ratero, Davi Rubinho ; Contro, Janine ; Keinan-Adamsky, Keren ; Soares, Ricardo Reis ; Goobes, Gil ; Martins, Leandro ; Nery, Jose G.
Número total de Autores: 9
Tipo de documento: Artigo Científico
Fonte: Microporous and Mesoporous Materials; v. 232, p. 151-160, SEP 15 2016.
Citações Web of Science: 8
Resumo

Vanadosilicates isostructural to ETS-10 and AM-6 microporous materials were synthesized hydrothermally using derivatives of cis- and trans-3,5-dimethyl-piperidine as organic structure directing agents (SDAs) and were subsequently tested as heterogeneous catalysts for the oxidehydration of glycerol to acrylic acid. The best performances were obtained with vanadosilicates prepared with 1,1,3,5-tetramethyl piperidinum cations, which were capable of converting 93.6% of glycerol to acrylic acid in one step, with 85.4% selectivity. Other important chemicals such as acrolein (3.8%), propanal (2.3%), acetaldehyde (3.2%), acetic acid (2.5%), and propionic acid (1.4%) were produced in smaller amounts. The results clearly indicated that these vanadosilicates are potential multifunctional catalysts capable of performing the oxidehydration of glycerol to acrylic acid in a single step. Spectroscopic data obtained from (51)VMAS-NMR, UV-Vis, XPS, and Raman scattering analyses suggested that the selectivity of these vanadosilicates for the oxidative dehydration of glycerol to acrylic acid could be attributed to the capacity of the vanadium species for dynamic adoption of multiple oxidation states during the catalytic reaction. (C) 2016 Elsevier Inc. All rights reserved. (AU)

Processo FAPESP: 11/51851-5 - Síntese e caracterização de catalisadores heterogêneos a base de complexos nanozeolitas/enzimas e sua aplicação na produção de biodiesel via Rota Etílica usando como matérias-primas óleo de palma
Beneficiário:Jose Geraldo Nery
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 10/01449-3 - Desenvolvimento de catalisadores heterogêneos porosos para a conversão de matérias-primas renováveis
Beneficiário:Leandro Pierroni Martins
Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
Processo FAPESP: 05/54703-6 - Síntese de catalisadores sólidos enantioseletivos: o desafio intelectual, tecnológico e sintético de zeólitas quirais
Beneficiário:Jose Geraldo Nery
Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores