Process for converting cellulose or lignocellulosic biomass using stable non-zeolite solid Lewis acids based on tin or antimony alone or as a mixture
US9012682B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Dec 16, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for transformation of lignocellulosic biomass or cellulose using stable non-zeolitic heterogeneous catalysts that are based on tin and/or antimony, preferably dispersed on a substrate. The use of these catalysts makes it possible to obtain directly lactic acid with high selectivity while limiting the production of oligosaccharides and soluble polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.