摘要:
The invention relates to a method for the isomerisation of glucose into fructose in water in the presence of a solid base catalyst characterised by its reversibility of CO 2 adsorption at a low temperature, the catalyst being a catalyst comprising at least one supported or non-supported lanthanide oxide or a molecular sieve based on silicon containing the organic template thereof. The invention also relates to a method for preparing HMF from glucose, comprising the isomerisation of glucose into fructose.
摘要:
The invention relates to a method for producing furfural by reacting pentose in water and in the presence of carboxylic acid and a heterogeneous acid catalyst, said method being carried out in an aqueous solution of carboxylic acid as the reaction medium. The invention also relates to the production of furfural by reacting pentose in water and in the presence of carboxylic acid and a heterogeneous acid catalyst. The invention further relates to an aqueous solution of carboxylic acid rich in furfural.
摘要:
The invention relates to a method for preparing 5-hydroxymethylfurfural (HMF) by reacting hexose in water and in the presence of carboxylic acid. The present invention further relates to the preparation of 5-hydroxymethylfurfural (HMF) by reacting hexose in water and in the presence of carboxylic acid and of a heterogenous acid catalyst. The invention also relates to an HMF-rich carboxylic acid solution.
摘要:
The invention relates to a process for converting lignocellulosic or cellulose biomass using heterogeneous catalysts based on tungsten oxide dispersed on a support based on oxides, preferably based on oxide(s) of aluminium and/or of zirconium and/or of titanium and/or of niobium and containing an element in the particular metal state. The use of these catalysts makes it possible to directly obtain upgradable products containing three carbon atoms, in particular hydroxyacetone and propylene glycol with high selectivity.
摘要:
The invention relates to a method for processing a lignocellulose or cellulose biomass using heterogeneous tungsten-based catalysts dispersed on a support based on (an) oxide(s), preferably (an) aluminium and/or zirconium and/or titanium and/or niobium oxide(s). The use of said catalysts results in the direct and highly selective production of lactic acid, while limiting the production of oligosaccharides and of soluble polymers.