Composite catalyst and preparation method therefor

Patent metadata

Field	Value
Publication number	US-2020246781-A1
Application number	US-202016853006-A
Country	US
Kind code	A1
Filing date	Apr 20, 2020
Priority date	Mar 7, 2014
Publication date	Aug 6, 2020
Grant date	—

Abstract

Disclosed is a composite catalyst, comprising carbon in a continuous phase and Raney alloy particles in a dispersed phase. The Raney alloy particles are dispersed evenly or unevenly in the carbon in a continuous phase, and the carbon in a continuous phase is obtained by carbonizing at least one carbonizable organic substance. The catalyst has good particle strength, high catalytic activity, and good selectivity.

First claim

What is claimed is:

1 . An activated catalyst, comprising carbon as a continuous phase, activated Raney alloy particles as a dispersed phase dispersed in the continuous phase, and at least one promoter selected from the group consisting of Mo, Cr, Ti, Pt, Pd, Rh and Ru,
wherein the activated Raney alloy particles comprise at least one first metal selected from the group consisting of nickel, cobalt, copper and iron, and wherein the activated catalyst has a porous structure.

2 . The activated catalyst of claim 1 , wherein the activated Raney alloy particles have a content of from 10 wt. % to 90 wt. %, based on the total weight of the activated catalyst.

3 . The activated catalyst of claim 1 , wherein the activated Raney alloy particles have a content of from 40 wt. % to 80 wt. %, based on the total weight of the activated catalyst.

4 . The activated catalyst of claim 1 , wherein the at least one promoter has a content of from 0.01 wt % to 5 wt % of the total weight of the Raney alloy particles.

5 . The activated catalyst of claim 1 , wherein that the activated Raney alloy particles have an average particle size of from 0.1 micron to 1000 microns.

6 . The activated catalyst of claim 1 , wherein the activated catalyst is in a shape selected from the group consisting of sphere, semi-sphere, ring, semi-ring, trilobal extrudate, cylinder, semi-cylinder, hollow cylinder, prism, cube, cuboid, tablet, pellet, tooth, and irregular particles.

7 . The activated catalyst of claim 1 , wherein the activated catalyst is in a form of particle, and has an average diameter in a range of from 0.3 mm to 20 mm.

8 . The activated catalyst of claim 1 , wherein that the activated Raney alloy particles have an average particle size of from 1 micron to 500 microns, and the activated catalyst is in a form of particle having an average diameter in a range of from 0.5 mm to 100 mm.

9 . The activated catalyst of claim 1 , wherein the activated Raney alloy particles further comprise at least one leachable element selected from the group consisting of aluminum, zinc and silicon prior to activation.

10 . The activated catalyst of claim 9 , wherein the at least one leachable element has been at least partially eroded inside the Raney particles to have a porous structure in the activated Raney alloy particles.

11 . The activated catalyst of claim 9 , wherein the activated Raney alloy particles comprises nickel, and the at least one leachable element comprises aluminum.

12 . A method for forming the activated catalyst of claim 1 , comprising:
providing a solidifiable composition comprising a carbonizable organic matter; mixing Raney alloy particles with the solidifiable composition to provide a mixture, wherein the Raney alloy particles comprises at least one leachable element selected from the group consisting of aluminum, zinc and silicon; solidifying the mixture; heating the mixture at a high temperature under an inert atmosphere so as to carbonize the carbonizable organic matter and provide a solid composite catalyst; and treating the solid composite catalyst with a caustic aqueous solution so as to provide the activated catalyst.

13 . The method of claim 12 , wherein the carbonizable organic matter is a polymer.

14 . The method of claim 12 , wherein the carbonizable organic matter comprises a curable epoxy or phenolic resin.

15 . The method of claim 12 , wherein the solid composite catalyst is treated with the caustic aqueous solution having a concentration of from 0.5 wt % to 50 wt % at a temperature in a range from 25° C. to 95° C. for 5 minutes to 72 hours.

16 . The method of claim 12 , wherein the mixture is heated at a high temperature in a rage from 400° C. to 1,900° C. for a period of time ranging from 1 hour to 24 hours.

17 . A method of using the activated catalyst of claim 1 for a conversion of an organic compound, comprising:
contacting a feedstock comprising the organic compound with the activated catalyst under suitable conversion conditions; and
recovering a converted organic compound.

18 . The method of claim 17 , wherein the conversion is a process of hydrogenation, dehydrogenation, amination, dehalogenation or desulfuration.

19 . The method of claim 17 , wherein the conversion is olefin hydrogenation, alkyne hydrogenation, arene hydrogenation, carbonyl hydrogenation or nitrile hydrogenation.

20 . The method of claim 17 , wherein the conversion is conducted in a fixed bed reactor or a fluidized bed reactor.

Assignees

• China Petroleum & Chem Corp
• Beijing Res Inst Chemical Ind China Petroleum & Chemical Corp

Inventors

• Dai Wei
• Lu Shuliang
• Jiang Haibin
• Wang Guoqing
• Zhang Xiaohong
• Peng Hui
• Qiao Jinliang

Classifications

• B01J37/08

  Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} · CPC title

• B01J25/02 Primary

  Raney nickel · CPC title

• B01J25/00 Primary

  Catalysts of the Raney type · CPC title

• C07C29/141

  with hydrogen or hydrogen-containing gases · CPC title

• B01J37/0201

  Impregnation · CPC title