Catalyst for producing furfuryl alcohol, preparation method thereof, and furfuryl alcohol production method

A catalyst, furfuryl alcohol technology, applied in chemical instruments and methods, molecular sieve catalysts, physical/chemical process catalysts, etc., can solve the uncontrollable increase of catalyst preparation, unstable storage and use of silica sol, and no catalyst stability given and other problems, to achieve the effect of promoting high dispersion on the surface of the carrier, overcoming the infeasible barrier of carrier passivation treatment, and avoiding troubles during storage and use

Active Publication Date: 2019-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

CN 1410161A discloses a Cu-Co bimetallic catalyst supported by MgO. The preparation method of the catalyst involved in the invention is simple, but the yield of furfuryl alcohol is low
Patents CN 1149507A and CN 1876233A respectively disclose CuO-ZnO-Al of furfural gas phase hydrogenation to furfuryl alcohol 2 o 3 - Alkaline earth metal oxides - Transition metal oxides and CuO-Ce 2 o 3 -Fe 2 o 3 -SiO 2 -TiO 2 Five-component chromium-free catalysts, although they all show excellent catalytic performance, the complex components and cumbersome preparation process lead to an increase in the uncontrollable preparation of the catalyst and an increase in investment
Patent CN103007941A discloses a copper oxide-silicon oxide composite oxide catalyst. Although the catalyst is simple in composition and has high furfural conversion and furfuryl alcohol selectivity, the use of sodium hydroxide in the catalyst preparation process brings alkali to the catalyst preparation process. Sexual Wastewater Treatment Issues
Shanxi Institute of Coal Chemical Industry (Catal.Sci.Technol., 2017, 7, 1880–1891) reported a copper silicate precursor-based copper-silicon furfural hydrogenation catalyst system with silica sol as the silicon source. It was found that at high space velocity, furfural The conversion rate and furfuryl alcohol selectivity are related to the metal copper content, but the stability of the catalyst is not given. At the same time, due to the instability of silica sol, its storage and use are limited, which limits the large-scale preparation of the catalyst.

Method used

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  • Catalyst for producing furfuryl alcohol, preparation method thereof, and furfuryl alcohol production method

Examples

Experimental program
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Effect test

Embodiment 1

[0035] 40%Cu-6%CaO-2%CeO 2 Preparation and application of / SBA-15 catalyst

[0036] Put 10g of SBA-15 powder in 200ml of anhydrous toluene, add 2g of trimethylchlorosilane, reflux for 12h, filter to obtain a solid, and wash with ethanol aqueous solution until the filtrate is free of chlorine. The obtained solid was dried at 120° C. for 12 h. 14.62gCu(NO 3 ) 2 ·3H 2 O, 1.79g Ca(NO 3 ) 2 4H 2 O and 0.49gCe(NO 3 ) 2 ·6H 2 O was dissolved in 50ml of deionized water, and high-purity ammonia gas was pulsed into the above solution. After the pH of the system no longer increased, the ammonia gas was stopped, and the obtained solution system was stirred for 20 minutes. Weigh 5 g of the SBA-15 powder obtained from the above silanization treatment and add it into the solution, and stir at room temperature for 4 h. Transfer the uniformly stirred mixture system to a water bath at 80°C, continue stirring to remove the ammonia gas in the mixture, and remove the mixture from the wa...

Embodiment 2

[0039] 10%Cu-1%MgO-2%CeO 2 Preparation and Application of / MCM-41 Catalyst

[0040] Put 10g of MCM-41 powder in 200ml of anhydrous toluene, add 3g of aminopropyltriethoxysilane, reflux at 110°C for 12h, filter to obtain a solid, and wash the filtrate with aqueous ethanol until there is no chlorine. The obtained solid was dried at 120° C. for 12 h. 2.18g Cu(NO 3 ) 2 ·3H 2 O, 0.37g Mg(NO 3 ) 2 ·6H 2 O and 0.29g Ce(NO 3 ) 2 ·6H 2 O was dissolved in 50ml of deionized water, and high-purity ammonia gas was pulsed into the above solution. After the pH of the system no longer increased, the ammonia gas was stopped, and the obtained solution system was stirred for 20 minutes. Weigh 5g of passivation-treated MCM-41 powder and add it into the solution, and stir at room temperature for 4h. Transfer the uniformly stirred mixture system to a water bath at 80°C, continue stirring to remove the ammonia gas in the mixture, and remove the mixture from the water bath to cool down aft...

Embodiment 3

[0042] 20%Cu-4%CaO-2%CeO 2 / Preparation and application of white carbon black catalyst

[0043] 10 g of white carbon black was calcined at 750° C. for 1 hour in an air atmosphere to obtain passivated white carbon black. 5.14g Cu(NO 3 ) 2 ·3H 2 O, 0.84g Ca(NO 3 ) 2 4H 2 O and 0.34g Ce(NO 3 ) 2 ·6H 2 O was dissolved in 50ml of deionized water, and high-purity ammonia gas was pulsed into the above solution. After the pH of the system no longer increased, the ammonia gas was stopped, and the obtained solution system was stirred for 20 minutes. Weigh 5 g of passivated white carbon black and add it into the solution, and stir at room temperature for 4 h. Transfer the uniformly stirred mixture system to a water bath at 80°C, continue stirring to remove the ammonia gas in the mixture, and remove the mixture from the water bath to cool down after the pH of the system is reduced to nearly neutral. After the system was cooled to room temperature, filter cake was obtained by f...

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Abstract

The invention relates to a catalyst for producing furfuryl alcohol, a preparation method thereof, and a furfuryl alcohol production method. The catalyst comprises a main active component, an assistantand a passivated carrier, wherein the main active component is Cu, the assistant is one or more of an alkali metal, an alkali earth metal and a rare earth metal oxide, and the passivated carrier is asilicon oxide-containing inorganic carrier. The catalyst is characterized in that the passivation treatment of the carrier is one or more of heat treatment, silanization and etherification. The catalyst is prepared by an ammonia evaporation induced deposition precipitation process, so the preparation method has the advantages of simplicity, convenience, low requirements for devices needed by rawmaterial storage and catalyst preparation, and easiness in large-scale amplified amplification. The catalyst has the advantages of high single conversion of furfural, high furfuryl alcohol selectivity, long life and good industrial application prospect when applied to furfural hydrogenation.

Description

technical field [0001] The invention relates to a catalyst for producing furfuryl alcohol and a method for preparing and producing furfuryl alcohol, belonging to the technical field of biomass conversion and catalysis. 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 can be used in the production of sand core binders, high temperature resistant phenolic resin binders, plasticizers with excellent cold resistance, synthetic fibers, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03B01J29/76B01J23/83B01J23/78B01J35/10C07D307/44
CPCY02P20/584
Inventor 张宗超杜虹
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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