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Methylacrolein catalyst and preparation method thereof

A technology of methacrolein and catalyst, applied in the field of methacrolein catalyst and its preparation, can solve the problems of low catalyst activity and selectivity, etc.

Inactive Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the problem of low catalyst activity and selectivity used in the selective oxidation reaction of isobutene in the prior art, and a methacrolein catalyst is provided, which has the advantages of high activity and selectivity

Method used

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  • Methylacrolein catalyst and preparation method thereof
  • Methylacrolein catalyst and preparation method thereof
  • Methylacrolein catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 100 g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to 100 grams of warm water at 70°C, stirred to make it all dissolve, and 63.2 grams of 40 wt% silica sol was added to make material A.

[0023] 38.5 g Fe(NO 3 ) 3 9H 2 O was added to 150 g of 70°C hot water, stirred and dissolved, and then 34.3 g of Bi(NO 3 ) 3 ·5H 2 O, 41.2 g Co(NO 3 ) 2 ·6H 2 O, 25.1 grams of 50wt% Mn(NO 3 ) 2 Aqueous solution, 0.47 g Cr 2 o 3 , 6.1 grams of Zr(NO 3 ) 4 , 7.86 grams of Pb(NO 3 ) 2 Material B was made after stirring and dissolving.

[0024]Add solution B to solution A under stirring to form a catalyst slurry, add ammonia water to adjust the pH to 7, and stir and age at 80°C for 2 hours, evaporate the slurry at 100°C to a solid content of 70wt%, and extrude to obtain A cylindrical object of φ3.5x3.5mm is then calcined at high temperature to obtain the finished catalyst. The calcining temperature is 490°C and the calcining time is 4 hours. The catalyst composition and prepa...

Embodiment 2

[0026] 100 g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to 100 grams of warm water at 70°C, stirred to make it all dissolve, and 63.2 grams of 40 wt% silica sol was added to make material A.

[0027] 38.5 g Fe(NO 3 ) 3 9H 2 O was added to 150 g of 70°C hot water, stirred and dissolved, and then 34.3 g of Bi(NO 3 ) 3 ·5H 2 O, 41.2 g Co(NO 3 ) 2 ·6H 2 O, 25.1 grams of 50wt% Mn(NO 3 ) 2 Aqueous solution, 0.47 g Cr 2 o 3 , 6.1 grams of Zr(NO 3 ) 4 , 1.57 grams of Pb(NO 3 ) 2 Material B was made after stirring and dissolving.

[0028] Add solution B to solution A under stirring to form a catalyst slurry, add ammonia water to adjust the pH to 7, and stir and age at 80°C for 2 hours, evaporate the slurry at 100°C to a solid content of 70wt%, and extrude to obtain A cylindrical object of φ3.5x3.5mm is then calcined at high temperature to obtain the finished catalyst. The calcining temperature is 490°C and the calcining time is 4 hours. The catalyst composition and prep...

Embodiment 3

[0030] 100 g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to 100 grams of warm water at 70°C, stirred to make it all dissolve, and 63.2 grams of 40 wt% silica sol was added to make material A.

[0031] 38.5 g Fe(NO 3 ) 3 9H 2 O was added to 150 g of 70°C hot water, stirred and dissolved, and then 22.9 g of Bi(NO 3 ) 3 ·5H 2 O, 41.2 g Co(NO 3 ) 2 ·6H 2 O, 25.1 grams of 50wt% Mn(NO 3 ) 2 Aqueous solution, 0.47 g Cr 2 o 3 , 6.1 grams of Zr(NO 3 ) 4 , 7.86 grams of Pb(NO 3 ) 2 Material B was made after stirring and dissolving.

[0032] Add solution B to solution A under stirring to form a catalyst slurry, add ammonia water to adjust the pH to 7, and stir and age at 80°C for 2 hours, evaporate the slurry at 100°C to a solid content of 70wt%, and extrude to obtain A cylindrical object of φ3.5x3.5mm is then calcined at high temperature to obtain the finished catalyst. The calcining temperature is 490°C and the calcining time is 4 hours. The catalyst composition and prep...

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Abstract

The present invention relates to a methylacrolein catalyst, a preparation method and a methylacrolein synthesis method which are mainly used for solving the problems of low catalyst activity and selectivity of selective oxidation for isobutene in the prior art. In order to better solve the problems, the technical scheme adopted by the invention is as follows: the active component of the methylacrolein catalyst provided by the invention has the following general formula of Mo12BiaFebCocCsdPbeXfYgZhOx, wherein in the formula, X is selected form at least one of W, V, Ni, Cr, Mn, Nb, Re, La or Ce; Y is selected form at least one of Sn, Sr, Zn, Ti or Zr; Z is selected form at least one of Na, Li, Tl, Mg or Ca. The methylacrolein catalyst can be used in the industrial production of methylacrolein.

Description

technical field [0001] The invention relates to a methacrolein catalyst, a preparation method and a method for synthesizing methacrolein. Background technique [0002] Methyl methacrylate (MMA) is an important organic chemical raw material and chemical product, mainly used in the production of polymethyl methacrylate (plexiglass, PMMA), polyvinyl chloride additive ACR and as the first acrylic fiber production Dimonomers can also be used in the production of coatings, adhesives, lubricants, textile dyes, etc. [0003] The traditional production method of MMA is the acetone cyanohydrin method using acetone and hydrocyanic acid as raw materials, but this process uses highly toxic and highly corrosive hydrocyanic acid and sulfuric acid, and a large amount of ammonium bisulfate is produced as a by-product, so the requirements for production equipment are harsh and greater pressure on the environment. After the 1980s, Nippon Shokubai, Mitsubishi Rayon and Asahi Kasei successivel...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/887C07C47/22C07C45/35
Inventor 李静霞姜家乐吴粮华
Owner CHINA PETROLEUM & CHEM CORP