Solvent-free conversion of glycerol to solketal catalysed by activated carbons functionalised with acid groups

Autor(es)

Rodrigues, Raphael ^{[1, 2]} ; Goncalves, Maraisa ^[1] ; Mandelli, Dalmo ^[1] ; Pescarmona, Paolo P. ^[2] ; Carvalho, Wagner A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Abc, Ctr Nat & Human Sci, BR-09210170 Santo Andre, SP - Brazil

^[2] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, B-3001 Heverlee - Belgium

• Tipo de documento: Artigo Científico
• Fonte: CATALYSIS SCIENCE & TECHNOLOGY; v. 4, n. 8, p. 2293-2301, 2014.
• Citações Web of Science: 24

Resumo

Activated carbons prepared from agricultural waste were modified to introduce surface acid sites by treatment with HNO3 or H2SO4. These acid-functionalised materials were studied as heterogeneous catalysts for the solvent-free acetalisation of acetone with glycerol to produce 2,2-dimethyl-1,3-dioxolane-4-methanol (solketal). The best catalyst was prepared by treatment with concentrated sulphuric acid and achieved 97% conversion of glycerol with high selectivity towards solketal by reaction with acetone at room temperature. The catalytic behaviour of the activated carbons was correlated with their physicochemical properties through characterization by N-2-physisorption, XPS, elemental analysis, TGA and Boehm titration of the acid sites. (AU)

• Processo FAPESP: 11/14626-3 - Conversão catalítica do glicerol em fase líquida e gasosa em produtos com maior valor comercial
• Beneficiário: Wagner Alves Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/22264-4 - Aproveitamento de resíduos lignocelulósicos e de glicerol para preparação de carvões com propriedades ácidas
• Beneficiário: Maraisa Gonçalves
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores