Catalyst for gas phase hydrogenation of furfural to prepare furfuryl alcohol, preparation and application thereof

A catalyst and a technology for preparing furfuryl alcohol, which are applied in catalyst activation/preparation, molecular sieve catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of complex catalyst composition, complex preparation procedure, cumbersome preparation process, etc. The effect of easy storage, low preparation cost and simple preparation method

Inactive Publication Date: 2019-08-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Co-precipitation and deposition-precipitation methods can prepare copper-based supported catalysts with high dispersion, but these methods have problems such as complicated preparation procedures and high costs.
The impregnation method has become one of the main preparation methods for industrial application catalysts due to its simple preparation method, but it is not easy to obtain high metal dispersion in the preparation of catalysts by this method
For the existing furfural hydrogenation to furfuryl alcohol catalyst system, the catalyst composition is generally complex and the preparation process is cumbersome, and the dispersion of metallic copper is one of the key factors affecting the reaction performance of the catalyst

Method used

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  • Catalyst for gas phase hydrogenation of furfural to prepare furfuryl alcohol, preparation and application thereof
  • Catalyst for gas phase hydrogenation of furfural to prepare furfuryl alcohol, preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Select silica pellets produced by Shandong Ocean Chemical Industry Co., Ltd. as the porous carrier, weigh 5g of the above-mentioned carrier and place it in a beaker, add 20g of ethanolamine, soak for 12h, and dry the mixture at 120°C for 48h in an air atmosphere. Lower roasting for 2 hours to obtain a pretreated carrier. 0.60g Cu(NO 3 ) 2 ·3H 2 O was dissolved in 5ml of deionized water, 3g of silicon oxide obtained by the above-mentioned ethanolamine treatment was added to the solution, soaked at room temperature for 12 hours, dried at 120°C for 12 hours, and then roasted at 350°C for 4 hours to obtain a catalyst, which is designated as A, and the composition of catalyst A 5% Cu / SiO 2 .

[0034] The loading amount of the catalyst was 1 g, and the catalyst was reduced in hydrogen at 300° C. for 5 hours before use. After the reactor bed temperature dropped to 130°C, furfural was injected into the reactor at a rate of 0.4g / h, and the H 2 / furfural molar ratio is 10, ...

Embodiment 2

[0036] Select silicon oxide powder produced by Shandong Ocean Chemical Industry Co., Ltd. as the porous carrier, weigh 5g of the above-mentioned carrier and place it in a beaker, add 15g of triethanolamine, soak for 6h, and dry the mixture at 100°C for 50h in an air atmosphere. Lower roasting for 3 hours to obtain a pretreated carrier. 7.60g Cu(NO 3 ) 2 ·3H 2 O was dissolved in 5ml of deionized water, 3g of the carrier obtained by the above-mentioned triethanolamine treatment was added to the solution, soaked at room temperature for 12 hours, dried at 100°C for 12 hours, and then roasted at 350°C for 3 hours to obtain a catalyst, denoted as B, the catalyst B Composition is 40% Cu / SiO 2 .

[0037] See Example 1 for the catalyst evaluation protocol. The reaction results are listed in Table 1.

Embodiment 3

[0039] Select silicon oxide particles produced by Shandong Ocean Chemical as the porous carrier, weigh 5g of the above-mentioned carrier and place it in a beaker, add 20g of diethanolamine, soak for 6h, and dry the mixture at 90°C for 96h in an air atmosphere. Lower roasting for 3 hours to obtain a pretreated carrier. 2.01g Cu(NO 3 ) 2 ·3H 2 O was dissolved in 5ml of deionized water, 3g of the carrier obtained by the above-mentioned diethanolamine treatment was added to the solution, soaked at room temperature for 12h, dried at 105°C for 12h, and then calcined at 300°C for 3h to obtain a catalyst, denoted as C Catalyst C Composition 15%Cu / SiO 2 .

[0040] See Example 1 for the catalyst evaluation protocol. The results of the reaction are listed in Table 1 and figure 1 .

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Abstract

The invention provides a catalyst for gas phase hydrogenation of furfural to prepare furfuryl alcohol, preparation and application thereof. The catalyst is composed of a metal component and a siliconoxide carrier pretreated by alcohol amine. The preparation method of the catalyst includes the steps of: (a) adding a certain amount of alcohol amine liquid into a silicon oxide porous carrier; (b) conducting drying and roasting treatment successively on the mixture obtained in step (a) to obtain a pretreated carrier; (c) adding a certain amount of a copper precursor solution into the carrier obtained in step (b); and (d) conducting drying and roasting on the mixture obtained in step (c) in order to obtain the catalyst. The invention has the advantages that: the catalyst has simple composition, and does not contain toxic and carcinogenic Cr, the preparation method of the catalyst is simple and convenient, low in cost, and easy for large-scale application, and the catalyst has high furfuralhydrogenation low temperature activity and long catalyst lifetime.

Description

technical field [0001] The invention belongs to the technical field of biomass conversion and catalysis, and in particular relates to a catalyst for furfural gas-phase hydrogenation to furfuryl alcohol and its preparation and application. Background technique [0002] The increasingly serious contradiction between energy supply and demand and increasingly stringent environmental protection requirements have promoted the research on the conversion and utilization of renewable biomass resources. Furfural is a chemical raw material mainly derived from woody biomass such as agricultural and forestry waste. China is the largest producer of furfural in the world, but its high-value utilization of furfural is very limited. High value-added furfuryl alcohol can be prepared from furfural through selective hydrogenation. Furfuryl alcohol is an extremely important chemical raw material, widely used in the production of sand core binders, high temperature resistant phenolic resin bind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J29/03B01J29/04B01J29/46B01J29/72B01J29/89B01J35/02B01J35/08B01J37/02C07D307/44
CPCB01J23/72B01J29/0333B01J29/044B01J29/46B01J29/7215B01J29/89B01J35/026B01J35/08B01J37/0207C07D307/44
Inventor 张宗超杜虹
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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