Methacrylaldehyde catalyst and preparation method thereof

A technology of methacrolein and catalyst, which is applied in the field of methacrolein catalyst and its preparation, can solve the problems of low yield of methacrolein and achieve good technical effects

Inactive Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the technical problems to be solved by the present invention is that the existing catalysts have a low yield of methacrolein in the reaction of isobutene or tert-butanol oxidation to methacrolein, and a new isobutene or tert-butanol is provided Catalyst for Oxidation of Methacrolein

Method used

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  • Methacrylaldehyde catalyst and preparation method thereof
  • Methacrylaldehyde catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 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 dissolve it completely, and 89.4 grams of 40wt% silica sol and 35.8 grams of 20wt% aluminum sol were added and mixed to obtain material A.

[0034] 38.5 g Fe(NO 3 ) 3 9H 2 O was added to 20 grams of hot water at 70°C, stirred and dissolved, and then 34.3 grams of Bi(NO 3 ) 3 ·5H 2 O, 41.2 g Co(NO 3 ) 2 ·6H 2 O, 6.1 g Ce(NO 3 ) 3 ·6H 2 O, 0.7 g Zn(NO 3 ) 2 ·6H 2 O, 0.3 g CsNO 3 and 19.1 g (NH 4 ) 6 h 5 [H 2 (WO4 ) 6 ] stirring and dissolving to make material B.

[0035] Add material B to material A to form a catalyst slurry, add 5.13 grams of oxalic acid, dry at 120°C, extrude to obtain a cylindrical object of φ3.5x3.5mm, and then calcine at a high temperature to obtain a finished catalyst. The calcination temperature is 450°C . The catalyst composition and preparation conditions are listed in Table 1, at 350 ° C, reaction space velocity 1200 hours -1 The ...

Embodiment 2

[0037] 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 dissolve it completely, and 78.9 grams of 40wt% silica sol and 47.7 grams of 20wt% aluminum sol were added to make material A.

[0038] 38.5 g Fe(NO 3 ) 3 9H 2 O was added to 20 grams of hot water at 70°C, stirred and dissolved, and then 34.3 grams of Bi(NO 3 ) 3 ·5H 2 O, 41.2 g Co(NO 3 ) 2 ·6H 2 O, 6.1 g Ce(NO 3 ) 3 ·6H 2 O, 0.7 g Zn(NO 3 ) 2 ·6H 2 O, 0.5 g CsNO 3 and 8.24 g NH 4 VO 3 Stir to make ingredient B.

[0039] Add material B to material A to form a catalyst slurry, add 5.13 grams of urea, dry at 120°C, and extrude to obtain a cylindrical object of φ3.5x3.5mm, and then roast at a high temperature to obtain a finished catalyst. The roasting temperature is 450°C . The catalyst composition and preparation conditions are listed in Table 1, at 350 ° C, reaction space velocity 1200 hours -1 The results are listed in Table 2.

[0040] Embodiment 3-11 mak...

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Abstract

The invention relates to a methacrylaldehyde catalyst and a preparation method thereof, and mainly solves the problems of low catalyst reaction yield and undesirable selectivity in the prior art. According to a technical scheme, the methacrylaldehyde catalyst comprises an active component and a carrier, the carrier is silica and/or alumina, the active component has the following formula: Mo12BiaFebCocCedXeYfZgOh, wherein X is selected from at least one of W, V, Ni, Cr, Mn, Nb or Re; Y is selected from at least one of Sn, Sr, Zn, Ti or Zr; Z is selected from at least one of K, Rb, Na, Li, Tl or Cs; and the BET specific surface area of the catalyst is 8-17m<2>/g. The methacrylaldehyde catalyst provided by the invention well solves the problems, and can be used for the industrial production of methacrylaldehyde.

Description

technical field [0001] The invention relates to a catalyst for producing methacrolein by oxidation of isobutene or tert-butanol and a preparation method thereof. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/888B01J23/882B01J23/883C07C47/22C07C45/35C07C57/05C07C51/25
Inventor 李静霞姜家乐吴粮华
Owner CHINA PETROLEUM & CHEM CORP
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