Conversion of sugar, sugar alcohol, or glycerol to valuable chemicals using a promoted zirconium oxide supported catalyst

A technology of glycerol and zirconia, used in organic chemistry, bulk chemical production, alcoholysis preparation, etc., can solve problems such as reducing the strength and durability of zirconia

Active Publication Date: 2012-03-21
CLARIANT INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reduces the strength and durability of zirconia

Method used

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  • Conversion of sugar, sugar alcohol, or glycerol to valuable chemicals using a promoted zirconium oxide supported catalyst
  • Conversion of sugar, sugar alcohol, or glycerol to valuable chemicals using a promoted zirconium oxide supported catalyst
  • Conversion of sugar, sugar alcohol, or glycerol to valuable chemicals using a promoted zirconium oxide supported catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 (chromium (VI) accelerator)

[0052] Use dissolved in 10ml deionized water (hereinafter referred to as "DI-H 2 10gCrO in O") 3 A first solution (Solution 1) was prepared. Then solution 1 was mixed with 500g zirconium nitrate solution (20% ZrO 2 )mix. Use 400ml DI-H 2 O and 250 ml of ammonium hydroxide solution (30%) to prepare a second solution (solution 2). Solution 1 was transferred dropwise to solution 2 while stirring. The pH of the mixed solutions (solution 1 and solution 2) dropped from about 12 to about 8.5.

Embodiment 2

[0055] Embodiment 2 (chromium (VI) promoter-NH 4 OH (alkaline aqueous solution))

[0056] Use 500ml DI-H 2 O diluted with 300ml concentrated NH 4 OH (28-30%) and charged to a 2000ml tank reactor. The reactor was then preheated to 35°C. With 500g zirconium nitrate solution (20% by weight ZrO 2 ) was preheated to 35°C and pumped into the reactor tank within 1 hour under vigorous stirring. The pH of the solution dropped from about 12.5 to about 8.5. After aging for 1 hour under slow stirring, the precipitate was filtered. Then, the resulting filter cake was mixed with 10 g of CrO by mechanical stirring 3 Mix for about 1 hour. The resulting mixture was dried under vacuum at 35-40°C until the LOI reached a range of about 65% to about 70% by weight. The dried powder was then extruded and calcined with a temperature program of 5°C / min to 110°C, hold (dwell) for 12 hours, 5°C / min to 600°C and hold for 6 hours. Typical properties of the resulting extrudate include a crush str...

Embodiment 3

[0057] Embodiment 3 (chromium (VI) accelerator-NaOH (alkaline aqueous solution))

[0058] NaOH was used instead of NH in this preparation 4 Oh. A total of 500 ml of 25% by weight NaOH solution was preheated to 35°C. 200ml NaOH solution and 1200ml DI-H 2 O was charged into a 2000ml tank reactor. With 500g zirconyl nitrate solution (20% by weight ZrO 2 ) was preheated to 35° C. and pumped into the tank reactor within 1 hour under vigorous stirring. During the precipitation, when the pH dropped below 8.5, 25% NaOH solution was added as needed. After aging for 1 hour under slow stirring, the precipitate was filtered. with DI-H 2 O Reslurry the filter cake (in a 1:1 volume ratio) and stir for 15 minutes then filter. The same procedure was repeated until the conductivity of the filtrate was below 200 μS, which typically required about 4 to 8 washes of the filter cake. The washed filter cake was then mixed with 10 g CrO 3 Mix and dry at 70°C until LOI of 64-70% by weight is...

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Abstract

A process for converting a sugar, sugar alcohol, or glycerol to a valuable chemical is described. The process may use a support comprising zirconium oxide promoted by a polyacid or promoter material. A catalytically active metal may be impregnated on the polyacid-promoted zirconium oxide support and the catalyst may then be introduced the sugar, sugar alcohol, or glycerol a source of hydrogen under reaction conditions. At least 40 wt % of the sugar, sugar alcohol or glycerol may be converted to a polyol and / or a shorter carbon-chain alcohol that may include at least one of propylene glycol, ethylene glycol, glycerin, methanol, ethanol, propanol and butandiols. Specific processes for converting glycerin having a selectivity for propylene glycol and for converting sorbitol with a selectivity for propylene glycol, ethylene glycol, and / or glycerin are also described.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 156,859, filed March 2, 2009, the contents of which are incorporated herein by reference. This application is related to International Patent Application PCT / US2010 / XXXXX filed March 2, 2010. technical field [0003] The present application includes embodiments and claims related to a process for the conversion of polyols such as sugars, sugar alcohols or glycerol into commercially valuable products and intermediates for further use in industrial and / or end user applications. The sugars, sugar alcohols or glycerol may (but need not be) obtained from biomass sources. Conversion of these materials may involve the use of catalysts with zirconia supports, including supports promoted by the incorporation of polyacids or other promoter materials. Background technique [0004] When applying heterogeneous catalysts in aqueous reactions, the main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/132C07C31/18C07C31/20C07C31/02C07C29/128
CPCY02P20/52
Inventor 刘爱国W·特贝维尔C·勒基特李辉晖(费伊)
Owner CLARIANT INT LTD
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