Method for producing 1,2-propylene glycol using bio-based glycerol
US7586016B2 · kind B2 · utility
1Cited by
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7Claims
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Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Sep 26, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention disclosed a method for producing 1,2-propylene glycol from bio-based glycerol. In this method, a CuO—CeO2—SiO2 catalyst is filled into a fixed bed reactor, a glycerol solution is flowed into the reactor together with hydrogen gas in a manner of top feeding, and controlling the reaction temperature to be 170˜200° C., the reaction pressure to be 1.0˜5.0 MPa, so as to realize the production of 1,2-propylene glycol from the hydrogenation of glycerol. The catalyst used in this invention can sustain a high selectivity for the target product and a high conversion for glycerol for 500 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.