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 l

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 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, mixed in 200 ml of deionized water; weighed containing 20% ​​Al 2 O 3 7.1g of aluminum sol containing SiO 2 1.9 g of 25% silica sol was mixed and diluted with 300 ml of deionized water. First, put the aluminum sol-silica sol mixed solution into the reactor, and under constant stirring, mix the copper-chromium-barium mixed solution with 1M Na 2 CO 3 The solution was added in parallel, and the pH value of the reaction was controlled to be about 7. At the same time, the temperature of the reaction solution was raised to 60 ° C. After the addition, the temperature of the reaction solution was continued for 1 hour, filtered and washed, dried at 110 ° C for 15 hours, and then heated in a muffle furnace at 350 ° C. After calcination for 2 hours, 1.5% graphite was added to form a sheet, which was sample A....

Example Embodiment

[0020] Example 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, mixed in 200 ml of deionized water; weighed containing 20% ​​Al 2 O 3 4.3g of aluminum sol containing SiO 2 1.7 g of 40% silica sol was mixed and diluted with 300 ml of deionized water. First, the aluminum sol-silica sol mixed solution was put into the reactor, and under constant stirring, the copper-chromium-calcium mixed solution was mixed with 1M Na 2 CO 3 The solution was added in parallel, and the pH value of the reaction was controlled to be about 7.5. At the same time, the temperature of the reaction solution was raised to 70 ° C. After the addition of materials, the temperature was continued to be stirred for 1 hour, filtered and washed, dried at 110 ° C for 15 hours, and then heated in a muffle furnace at 350 ° C. After calcination for 2 hours, 1.5% graphite was added to form a sheet, which was sample B...

Example Embodiment

[0022] Example 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, mixed in 200 ml of deionized water; weighed 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, the aluminum nitrate-water glass mixed solution was put into the reactor, and under constant stirring, the copper-chromium-barium mixed solution was mixed with 1M Na 2 CO 3 The solution was added in parallel, the pH value of the reaction was controlled to be about 7, and the temperature of the reaction solution was raised to 65°C. After calcination for 3.5 hours, 1.5% graphite was added to form a sheet, which was sample C.

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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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