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A kind of supported bimetallic component catalyst and its preparation method and glycerol hydrogenolysis reaction method

A metal component and catalyst technology, which is applied in the field of supported bimetallic component catalyst and its preparation and glycerol hydrogenolysis reaction, achieves good glycerol hydrogenolysis activity, large increase in selectivity, high catalytic glycerol hydrogenolysis activity and selectivity sexual effect

Active Publication Date: 2020-08-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many reports in the literature, there is still a lot of room for improvement and improvement in the activity and selectivity of the catalyst for hydrogenolysis of glycerol.

Method used

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  • A kind of supported bimetallic component catalyst and its preparation method and glycerol hydrogenolysis reaction method
  • A kind of supported bimetallic component catalyst and its preparation method and glycerol hydrogenolysis reaction method
  • A kind of supported bimetallic component catalyst and its preparation method and glycerol hydrogenolysis reaction method

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preparation example Construction

[0029]According to another aspect of the present invention, the present invention also provides a preparation method of a supported bimetallic component catalyst, the method comprising the steps of:

[0030] 1) impregnating the support with a solution containing a compound of the first metal component selected from Group VIII, and then drying, calcining and reducing activation of the impregnated support in sequence to obtain a catalyst precursor containing the first metal component;

[0031] 2) impregnating the catalyst precursor obtained in step 1) with a solution containing a compound of a second metal component selected from Group VIB and / or VIIB in a reducing atmosphere, and then drying to remove the solvent.

[0032] The compound of the first metal active component is nitrate, acetate, sulfate, basic carbonate, chloride containing one or more elements of Pt, Pd, Ru, Rh, Ir At least one, the compound of the second metal active component is at least one of soluble compounds...

Embodiment 1

[0054] This example is used to illustrate the catalyst provided by the present invention and its preparation method.

[0055] According to the required metal salt content of equal volume impregnation method, be prepared with the impregnation solution of 30.6 milliliters of dichlorotetraammine platinum containing 23.5 g / liter of platinum. Decant the impregnation solution to 36 g γ-Al 2 o 3 Carrier (product of Changling Catalyst Factory, particle size 20-40 mesh, the same below), stir well at 20°C, let stand for 4 hours, dry at 120°C, roast at 350°C for 4 hours, and reduce with hydrogen at 350°C for 4 hours , the hydrogen pressure is 0.1 MPa. After reduction, it was lowered to room temperature, and 55.1 ml of ammonium tungstate aqueous solution containing 7.84 g / L of tungsten was added under a hydrogen atmosphere, allowed to stand for 2 hours, and then dried with hydrogen. Then by O 2 / N 2 The mixed gas with a volume ratio of 0.5% is passivated for 0.5 hours, and stored in ...

Embodiment 2

[0062] This example is used to illustrate the catalyst provided by the present invention and its preparation method.

[0063]According to the required metal salt content of the equal volume impregnation method, 30.6 milliliters of dichloro tetraammine platinum and rhodium chloride impregnation solution containing 23.5 grams per liter of platinum and 23.5 grams per liter of rhodium are prepared. Decant the impregnation solution to 36 g SiO 2 Carrier (Qingdao Ocean Chemical Factory), stirred at 15°C, allowed to stand for 6 hours, dried at 100°C, calcined at 450°C for 2 hours, reduced with hydrogen at 450°C for 2 hours, and the hydrogen pressure was 1 MPa. After reduction, it was lowered to room temperature, and 55.1 ml of perrhenic acid aqueous solution containing 13.1 g / L of rhenium was added under a hydrogen atmosphere, allowed to stand for 2 hours, and then dried with hydrogen. Then by O 2 / N 2 The mixed gas with a volume ratio of 0.8% was passivated for 2 hours, and store...

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Abstract

The invention discloses a supported bi-metal component catalyst, a preparation method thereof, and a method of catalyzing hydrogenolysis reaction of glycerol. A bi-metal component includes a first metal M1 in the VIII group and a second metal M2 in the VIB and / or the VIIB group, herein the weight ratio, on the basis of metal elements, satisfies (M2 / M1)XPS / (M2 / M1)XRF = 2.0-20.0, wherein the (M2 / M1)XPS is the weight ratio, on the basis of metal elements, of a second metal component to a first metal component in the catalyst according to representation by X-ray photoelectron spectroscopy, and the (M2 / M1)XRF is the weight ratio, on the basis of metal elements, of the second metal component to the first metal component in the catalyst according to representation by X-ray fluorescence spectrometry. The first metal component is at least one of Pt, Pd, Ru, Rh and Ir, and the second metal component is at least one of Mo, W, Re and Mn. The bi-metal component catalyst, compared with the catalysts in the same metal contents in the prior art, is higher in activity and selectivity when being used for catalyzing the hydrogenolysis reaction of glycerol.

Description

technical field [0001] The invention relates to a supported bimetallic component catalyst, its preparation method and application, and a method for using the catalyst to catalyze glycerin hydrogenolysis reaction. Background technique [0002] 1,3-propanediol is an important raw material for the production of degradable polyester propylene terephthalate (PTT), etc., and its demand is constantly increasing; moreover, as an important chemical raw material, it can also be used in solvents, emulsifiers, medicines, In cosmetics and organic synthesis. At present, the industrial production of 1,3-propanediol mainly adopts ethylene oxide carbonylation method and acrolein hydration hydrogenation method, and the raw materials of these two processes are from petroleum. With the continuous depletion of petroleum resources, it is of great significance to find non-petroleum routes for the production of 1,3-propanediol. Glycerol is a stoichiometric by-product (about 10%) in the biodiesel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/652B01J23/656C07C29/60C07C31/20
CPCB01J23/002B01J23/6525B01J23/6527B01J23/6567B01J2523/00C07C29/60B01J2523/828B01J2523/69B01J2523/31B01J2523/822B01J2523/74B01J2523/41B01J2523/827B01J2523/47B01J2523/68C07C31/205
Inventor 郑仁垟李明丰李会峰杨建建晋超张荣俊夏国富张润强褚阳刘锋
Owner CHINA PETROLEUM & CHEM CORP
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