Process for transformation of lignocellulosic biomass or cellulose by tungsten-based solid lewis acids
US8624058B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Feb 1, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 1, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for transformation of lignocellulosic biomass or cellulose that uses tungsten-based heterogeneous catalysts that are dispersed on an oxide-based substrate, preferably with a base of oxide(s) of aluminum and/or zirconium and/or titanium and/or niobium. 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.