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Catalyst for preparation of furfuryl alcohol by furfural liquid phase hydrogenation and preparation method

A catalyst and furfural liquid technology, which is applied in the field of catalysts for furfural liquid-phase hydrogenation to furfuryl alcohol, can solve the problems of short life, non-recyclable catalyst, easy deactivation, etc., and achieve less addition, low price, high activity and selectivity sexual effect

Active Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Due to the easy deactivation and short life of the existing Cu-Cr catalyst, the catalyst cannot be recycled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 132.9g, chromic anhydride (CrO 3 )50.0g, lanthanum nitrate (La(NO 3 ) 3 ·6H 2O) 4.7g and 36g of 25wt% acidic silica gel are miscible in 500mL deionized water; first 100mL deionized water is put into the reaction kettle, and under constant stirring, the copper-chromium-lanthanum-silicon mixed solution is mixed with 3wt% alkane Ammonia water (18wt%) of phenol polyoxyethylene ether was added in parallel, and the pH value of the reaction was controlled at 6, while the temperature of the reaction solution was raised to 40°C. After the addition, the mixture was kept stirring for 0.5 hours, filtered, and dried at 120°C for 12 hours. Then bake it in a muffle furnace at 300°C for 4 hours, and finally grind it into a catalyst sample of less than 120 mesh, the specific surface area of ​​the sample is 128m 2 / g, the dispersion degree of metal Cu is 0.68, CuO / Cr in the catalyst 2 o 3 The molar ratio is 2.2, CuO / La 2 o 3 The molar ...

Embodiment 2

[0041] Weigh copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 145.0g, chromic anhydride (CrO 3 )50.0g, lanthanum nitrate (La(NO 3 ) 3 ·6H 2 O) 3.35g and 25g of 25wt% acidic silica gel are miscible in 500mL deionized water; first 100mL of deionized water is put into the reaction kettle, and under constant stirring, the copper-chromium-lanthanum-silicon mixed liquid liquid is mixed with 5wt% Ammonia (18wt%) of polyvinylpyrrolidone is added in parallel, and the pH value of the reaction is controlled at 6, while the temperature of the reaction solution is raised to 40° C., and the addition is completed and continued to insulate and stir for 0.5 hours, filtered, dried at 120° C. for 12 hours, and then Calcined in a furnace at 300°C for 4 hours, and finally ground into a catalyst sample of less than 120 mesh, the specific surface area of ​​the sample is 130m 2 / g, the dispersion of metal Cu is 0.65, CuO / Cr in the catalyst 2 o 3 The molar ratio is 2.4, CuO / La 2 o 3 The molar ratio is 1...

Embodiment 3

[0043] Weigh copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 108.7g, chromic anhydride (CrO 3 )50.0g and lanthanum nitrate (La(NO 3 ) 3 ·6H 2 (0) 6.5g and 54g of 25wt% acidic silica gel are miscible in 500mL deionized water; first 100mL deionized water is put into the reaction kettle, and under constant stirring, the copper-chromium-lanthanum-silicon mixed solution is mixed with 4wt% poly The ammoniacal liquor (18wt%) of ethylene glycol is added in parallel, and the reaction pH value is controlled at 6, and the temperature of the reaction solution is raised to 40 DEG C simultaneously, and the feeding is completed and continued to insulate and stir for 0.5 hour, filtered, dried at 120 DEG C for 12 hours, and then Calcined in a furnace at 300°C for 4 hours, and finally ground into a catalyst sample of less than 120 mesh, the specific surface area of ​​the sample is 125m 2 / g, the dispersion degree of metal Cu is 0.61, CuO / Cr in the catalyst 2 o 3 The molar ratio is 1.8, CuO / La 2 o...

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Abstract

The invention discloses a catalyst for preparation of furfuryl alcohol by furfural liquid phase hydrogenation and a preparation method. The catalyst comprises: Cuo, Cr2O3, La2O3 and SiO2. The mole ratio of CuO / Cr2O3 is 1.8-2.4, the mole ratio of CuO / La2O3 is 60-160, and the mole ratio of CuO / SiO2 is 2-6. The method includes: taking the components according to the dosage to prepare the catalyst for preparation of furfuryl alcohol by furfural liquid phase hydrogenation by co-precipitation. The catalyst provided by the invention overcomes the disadvantages of the prior art, and has the advantages of high activity and selectivity of furfuryl alcohol, low price and continuous applicability.

Description

technical field [0001] The invention relates to the field of furfuryl alcohol production, in particular to a catalyst for preparing furfuryl alcohol by furfural liquid-phase hydrogenation. Background technique [0002] Furfuryl alcohol is an important chemical raw material. Furfuryl alcohol can be hydrolyzed to produce ethylphthalic acid, which is an intermediate of nutritional medicine calcium fructonate; furan-type resin, furfuryl alcohol-urea-formaldehyde resin and Phenolic resins, etc.; furfuryl alcohol is a good solvent and rocket fuel for furan resins, varnishes, and pigments; in addition, furfuryl alcohol is also widely used in synthetic fibers, rubber, pesticides and foundry industries. [0003] At present, the production process of furfuryl alcohol can be divided into liquid phase hydrogenation process and gas phase hydrogenation process. Catalysts for furfural liquid-phase hydrogenation to produce furfuryl alcohol are mainly divided into two types: copper-chromium...

Claims

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Application Information

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IPC IPC(8): B01J23/86C07D307/44
Inventor 冯海强高继东赵开径朱跃辉
Owner CHINA PETROLEUM & CHEM CORP
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