1.
Bioresour Technol
; 129: 616-9, 2013 Feb.
Artigo
em Inglês
| MEDLINE
| ID: mdl-23337540
RESUMO
A highly selective approach to produce levulinic acid from cellulose was developed via microwave-assisted synthesis in SO3H-functionalized ionic liquids (SFILs). The effects of reaction conditions and ionic liquid structures on the yield of levulinic acid have been investigated, where the highest yield of 55.0% was obtained. The catalytic activities of SFILs depend on the anions and decrease in the order: HSO4->CH3SO3->H2PO4-, which is in good agreement with their acidity order. The SFILs are efficient catalysts for cellulose conversion into levulinic acid and the subsequent esterification, which facilitates the separation of product and reuse of ionic liquids.
Assuntos
Celulose/química , Líquidos Iônicos/química , Ácidos Levulínicos/síntese química , Celulose/efeitos da radiação , Líquidos Iônicos/efeitos da radiação , Ácidos Levulínicos/efeitos da radiação , Micro-Ondas , Doses de Radiação
2.
Radiat Res
; 61(1): 172-6, 1975 Jan.
Artigo
em Inglês
| MEDLINE
| ID: mdl-234192