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A preparation method of furfural alcohol catalyst by liquid-phase hydrogenation of furfural

A technology for preparing furfuryl alcohol and catalyst, which is applied in chemical instruments and methods, physical/chemical process catalysts, organic chemistry, etc., can solve the problems of complex preparation method, unstable activity and selectivity, etc., and achieves simple preparation method and easy industrial scale-up. Application, performance and good repeatability

Active Publication Date: 2019-12-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of complex preparation methods, unstable activity and selectivity of furfural alcohol catalysts in the prior art, and to provide a relatively simple and pollution-free liquid-phase hydrogenation of furfural Preparation method of furfuryl alcohol catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0012] The invention provides a preparation method of a catalyst for preparing furfuryl alcohol by furfural liquid-phase hydrogenation. The method comprises: grinding the mixture of soluble copper salt, soluble chromium salt, calcium carbonate powder, silica sol and ammonium carbonate, followed by drying, Roasting, wherein, based on the molar amount of copper, chromium, calcium, and silicon, the molar ratio of soluble copper salt to soluble chromium salt is 0.9-1.2:1, and the molar ratio of soluble copper salt to calcium carbonate powder is 1 -8:1, the molar ratio of soluble copper salt to silica sol is 2-6:1.

[0013] According to the method of the present invention, preferably, the molar ratio of soluble copper salt to soluble chromium salt is 1-1.15:1 based on the molar amount of copper element, chromium element, calcium element, and silicon element, and the soluble copper salt to carbonic acid The molar ratio of calcium powder is 2-4:1, and the molar ratio of soluble coppe...

Embodiment 1

[0027] This example is used to illustrate the preparation method of the catalyst for preparing furfuryl alcohol by furfural liquid-phase hydrogenation of the present invention.

[0028] (1) Weigh 30g copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 45g chromium nitrate (Cr(NO 3 ) 3 9H 2 (O), 7.5g 25% by weight of acidic silica gel, 31.2g (NH 4 ) 2 CO 3 And 3.1g of nano-calcium carbonate (the particle size range is 60nm) is placed in the ball milling jar, under the ball milling condition that the rotating speed is 400 rpm, the ball-to-material ratio is 15:1, ball milling 12 hours, take out mixture, 120 ℃ of drying 12 hours hours, and then calcined at 350°C for 4 hours in a muffle furnace to obtain a catalyst, in which CuO and Cr 2 o 3 The molar ratio of CuO to SiO is 2.2:1 2 The molar ratio of CuO to CaCO is 4:1 3 The molar ratio is 4:1.

[0029] (2) Add 2.5 g of the catalyst and 300 ml of furfural into the autoclave at the same time, then add 0.4 g of CaO, and at a reaction t...

Embodiment 2

[0031] This example is used to illustrate the preparation method of the catalyst for preparing furfuryl alcohol by furfural liquid-phase hydrogenation of the present invention.

[0032] (1) Weigh 30g copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 49.6g chromium nitrate (Cr(NO 3 ) 3 9H 2 (O), 13.5g 25% by weight of acidic silica gel, 29.8g (NH 4 ) 2 CO 3And 4.2g of nano-calcium carbonate (the particle size range is 40nm) is placed in the ball milling tank, under the ball milling condition that the rotating speed is 300 rpm, the ball-to-material ratio is 5:1, ball milling 6 hours, take out mixture, 120 ℃ of dry 12 hours, and then calcined at 350°C for 4 hours in a muffle furnace to obtain a catalyst, in which CuO and Cr 2 o 3 The molar ratio of CuO to SiO is 2:1 2 The molar ratio of CuO to CaCO is 2.2:1 3 The molar ratio is 3:1.

[0033] (2) Add 2.5 g of the catalyst and 300 ml of furfural into the autoclave at the same time, then add 0.4 g of CaO, and at a reaction temperatu...

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Abstract

The invention relates to a preparation method of a catalyst for preparing furfuralcohol by virtue of furfural liquid-phase hydrogenation. The preparation method comprises the following steps: grinding a mixture of a soluble copper salt, a soluble chromium salt, calcium carbonate powder, silica sol and ammonium carbonate, and then performing drying and baking in sequence, wherein according to molar weights of the elements including copper, chromium, calcium and silicon, the mole ratio of the soluble copper salt to the soluble chromium salt is (0.9-1.2):1, the mole ratio of the soluble copper salt to the calcium carbonate powder is (1-8):1, and the mole ratio of the soluble copper salt to the silica sol is (2-6):1. The catalyst for preparing the furfuralcohol by virtue of furfural liquid-phase hydrogenation, prepared by the preparation method provided by the invention, has relatively high activity and selectivity, and the preparation method of the catalyst is simple, and is easy to operate; and the catalyst is relatively good in performance repeatability, can achieve industrial scaling-up application easily, and cannot generate wastewater, which pollutes the environment, during preparation.

Description

technical field [0001] The invention relates to the field of furfuryl alcohol production, in particular to a preparation method of a catalyst for furfural alcohol production by liquid-phase hydrogenation of furfural. 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. my country is a big country that produces furfuryl alcohol, mainly based on furfural liquid-phase hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/232C07D307/44
CPCB01J27/232C07D307/44
Inventor 朱跃辉冯海强高继东赵开径
Owner CHINA PETROLEUM & CHEM CORP