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Catalyst for preparing furfuryl alcohol from furfural by vapor phase hydrogenation and preparation method thereof

A catalyst and furfuryl alcohol production technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve high cost, low catalyst reactivity, poor structural stability, etc. problem, to achieve high activity and selectivity

Inactive Publication Date: 2012-08-15
NANJING XIHUI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above catalysts still have the problems of low reactivity or high cost and poor structural stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 24.1g, chromium nitrate (Cr(NO 3 ) 3 9H 2 O) 31.6g, barium nitrate (Ba(NO 3 ) 2 ·H 2 O) 0.57 g, miscible in 200ml deionized water; weigh 20% Al 2 o 3 Aluminum sol 7.1g, containing SiO 2 1.9g of 25% silica sol was mixed and diluted with 300ml of deionized water. First put the aluminum sol-silica sol mixture into the reaction kettle, under constant stirring, mix the copper-chromium-barium mixture with 1M Na 2 CO 3 Add the solution in parallel, control the pH value of the reaction at about 7, and raise the temperature of the reaction solution to 60°C at the same time. Roast for 2 hours, add 1.5% graphite to form a tablet, which is sample A.

Embodiment 2

[0021] Weigh copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 26.0g, chromic anhydride (CrO 3 ) 7.2g, calcium nitrate (Ca(NO 3 ) 2 4H 2 O) 3.28 g, miscible in 200ml deionized water; weigh 20% Al 2 o 3 Aluminum sol 4.3g, containing SiO 2 1.7g of 40% silica sol was mixed and diluted with 300ml of deionized water. First put the aluminum sol-silica sol mixture into the reaction kettle, under constant stirring, mix the copper-chromium-calcium mixture with 1M Na 2 CO 3 Add the solution in parallel, control the pH value of the reaction at about 7.5, and raise the temperature of the reaction solution to 70°C at the same time. Roast for 2 hours, add 1.5% graphite to form a tablet, which is sample B.

Embodiment 3

[0023] Weigh copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 25.0g, chromium nitrate (Cr(NO 3 ) 3 9H 2 O) 28.9g, barium nitrate (Ba(NO 3 ) 2 ·H 2 (O) 1.78 g, miscible in 200ml deionized water; Weigh aluminum nitrate (Al(NO 3 ) 3 9H 2 O ) 7.8g, containing 25% SiO 2 Mix 1.8 g of water glass and add 300 ml of deionized water to dilute. First put the aluminum nitrate-water glass mixture into the reaction kettle, and under constant stirring, mix the copper-chromium-barium mixture with 1M Na 2 CO 3 Add the solution in parallel, control the pH value of the reaction at about 7, and raise the temperature of the reaction solution to 65°C at the same time. Roast for 3.5 hours, add 1.5% graphite to form a tablet, which is sample C.

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PUM

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Abstract

The invention belongs to the technical field of catalysts, and relates to a catalyst for preparing furfuryl alcohol from furfural by vapor phase hydrogenation and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 26-50% of CuO, 22-40% of Cr2O3, 0.1-11% of Al2O3, 0.1-11% of SiO2 and 1-15% of an assistant. The catalyst is prepared by a coprecipitation method. The application temperature of the catalyst is 120-210 DEG C, the air speed of the furfural liquid is 0.4-0.6hr<-1>, and the reaction pressure is 0.001-0.5MPa. The catalyst provided by the invention has high activity and selectivity; the furfural conversion rate is 100%; the furfuryl alcohol selectivity is greater than or equal to 93%; and the catalyst can be used for industrial production of furfuryl alcohol by furfural vapor phase hydrogenation.

Description

technical field [0001] The technical field of the catalyst of the present invention relates to a catalyst for furfuryl alcohol synthesis, in particular to a catalyst for furfural gas-phase catalytic hydrogenation to synthesize furfuryl alcohol. Background technique [0002] Furfuryl alcohol is an important organic chemical raw material. It is mainly used in the production of furfural resin, furan resin, furfuryl alcohol-urea aldehyde resin, phenolic resin, etc. Also used in the preparation of fruit acids, plasticizers, solvents and rocket fuel. In addition, it is also widely used in industrial sectors such as dyes, synthetic fibers, rubber, pesticides and foundry. [0003] At present, furfuryl alcohol is produced industrially by liquid-phase catalytic hydrogenation or gas-phase catalytic hydrogenation of furfural. [0004] The former has a short process flow, less investment, and quick results. The disadvantages are high labor intensity, difficult product separation, high...

Claims

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Application Information

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IPC IPC(8): B01J23/86C07D307/44
Inventor 孙德标房德仁施鸿伟许建民唐新宇
Owner NANJING XIHUI NEW MATERIAL
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