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Method for increasing catalyst strength

A catalyst and strength technology, applied in the field of improving catalyst strength, can solve problems such as poor strength and reduced specific surface area, and achieve significant technical effects and large specific surface area

Active Publication Date: 2015-04-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem that the specific surface area of ​​the olefin isomerization catalyst is reduced after molding and the strength is poor in the prior art, and a new method for improving the strength of the catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh the specific surface area as 100m 2 60 grams per gram of calcium oxide raw powder, 15 grams of ammonia-type silica sol (of which SiO 2 The mass content is 40%), 1 gram of celadon powder, after mixing, use a kneader to knead for 5 minutes, add 55 grams of ammonium oxalate solution with a mass concentration of 0.5%, knead for 30 minutes, press into tablets, pressure 15MPa, time 100s, and then 70 ℃ drying for 12 hours, 350 ℃ calcination for 12 hours, and calcination to obtain product A. The specific surface area and detection intensity are shown in Table 1.

Embodiment 2

[0021] Weigh the specific surface area as 300m 2 90 grams per g of barium oxide powder, 20 grams of sodium silica sol (of which SiO 2 The mass content is 30%), 40 mesh SiO 2 5 grams, 2 grams of safflower powder, knead with a kneader for 8 minutes after mixing, add 45 grams of ammonium carbonate solution with a mass concentration of 1.5%, knead for 25 minutes, press into tablets, press 25 MPa, time 80s, and then dry at 90 ° C for 10 seconds Hours, 450 ℃ calcined for 10 hours, calcined to obtain the product B. The specific surface area and detection intensity are shown in Table 1.

Embodiment 3

[0023] Weigh the specific surface area as 600m 2 / g of strontium oxide powder 70 grams, ammonia-type silica sol 30 grams (of which SiO 2 The mass content is 20%), 80 mesh SiO 2 10 grams, 3 grams of squash powder, knead with a kneader for 10 minutes after mixing, add 35 grams of ammonium acetate solution with a mass concentration of 2.5%, knead for 20 minutes, press into tablets, press 35MPa, time 60s, and then dry at 100 ° C for 9 hour, 450 ℃ calcined for 10 hours, calcined to obtain the product C. The specific surface area and detection intensity are shown in Table 1.

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Abstract

The present invention relates to a method for increasing a catalyst strength, wherein the problem that the isomerization catalyst has a poor strength after forming in the prior art is mainly solved with the present invention. The technical scheme comprises that: a silica sol, SiO2, a binder, and one or a plurality of materials selected from an ammonium carbonate solution, an ammonium oxalate solution and an ammonium acetate solution are added to an alkaline earth metal oxide, kneading is performed, and forming is performed in a tabletting or ball rolling manner to obtain the catalyst. With the technical scheme, the problem in the prior art is well solved, and the method can be used for industrial production of isomerization catalyst alkaline earth metal oxides.

Description

technical field [0001] The present invention relates to a method for increasing catalyst strength. Background technique [0002] Alkaline earth metal oxides, especially magnesium oxide, are very promising catalysts, catalyst supports and adsorbents. In recent years, the research on the surface structure and catalytic performance of magnesium oxide has attracted widespread attention. Many researches have pointed out that due to the high surface reactivity of magnesium oxide itself, by increasing the specific surface area of ​​magnesium oxide, it can show excellent catalytic performance. catalytic and adsorption properties. Especially for olefin isomerization reaction, high specific surface area magnesium oxide is a good catalyst. [0003] CN100379712C reported a method for high-purity magnesium oxide as an isomerization catalyst. This technology is mainly used in the isomerization of butene-2 ​​to butene-1, and the conversion rate of butene-2 ​​is 20-30%. [0004] CN15221...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/00B01J23/02B01J21/14
Inventor 董静刘苏王仰东
Owner CHINA PETROLEUM & CHEM CORP