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Catalyst for oxidizing isobutene of tert-butyl alcohol to prepare methy acraldehyde and preparation method thereof

A technology for synthesizing methacrolein and catalyst, which can be used in metal/metal oxide/metal hydroxide catalysts, hydrocarbon oxidation to prepare oxygen-containing compounds, physical/chemical process catalysts, etc., and can solve the problem of low yield of methacrolein and other problems to achieve the effect of improving the reaction performance

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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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  • Catalyst for oxidizing isobutene of tert-butyl alcohol to prepare methy acraldehyde and preparation method thereof
  • Catalyst for oxidizing isobutene of tert-butyl alcohol to prepare methy acraldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 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 all, and 89.4 grams of 40% (wt.) silica sol, 35.8 grams of 20% aluminum sol and 19.1 grams of (NH 4 ) 6 h 5 [H 2 (WO 4 ) 6 ] to make material A.

[0028] 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, 2.1 g Er(NO 3 ) 3 ·3H 2 O, 0.7 g Zn(NO 3 ) 2 ·6H 2 O, 0.27 g CsNO 3 Material B was made after stirring and dissolving.

[0029]Dissolve 2.1 g of antimony trioxide in 30 g of 10% by mass dilute hydrochloric acid aqueous solution to obtain solution C. Add solutions B and C to solution A under stirring to form a catalyst slurry, add 5.13 grams of ammonia water, and stir and age at 80°C for 2 hours, dry the slurry at 120°C to remove most of the water, and extrude to obtain The cylindrical object is then calcined at a high temperature to obtain...

Embodiment 2

[0031] 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 all, and 78.9 grams of 40% (wt.) silica sol, 47.7 grams of 20% aluminum sol and 8.24 grams of NH 4 VO 3 Material A is made.

[0032] 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, 2.1 g Er(NO 3 ) 3 ·3H 2 O, 0.7 g Zn(NO 3 ) 2 ·6H 2 O, 0.27 g CsNO 3 Material B was made after stirring and dissolving.

[0033] Dissolve 2.1 g of antimony trioxide in 30 g of 10% by mass dilute hydrochloric acid aqueous solution to obtain solution C. Add solutions B and C to solution A under stirring to form a catalyst slurry, add 5.60 g of urea, and stir and age at 80°C for 2 hours, dry the slurry at 100°C to remove most of the water, and extrude to obtain The cylindrical object is then calcined at a high temperature to obtain a finished catalyst, and the calcini...

Embodiment 3～11

[0035] Catalysts were prepared by implementing the steps of 2, and the specific results are listed in Table 1. Under the evaluation condition identical with embodiment 2, reaction result is listed in table 2.

[0036] Table 1 Catalyst composition and preparation conditions

[0037]

[0038] Table 2 Catalyst evaluation results

[0039]

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Abstract

The invention relates to a catalyst for oxidizing isobutene of tert-butyl alcohol to prepare methy acraldehyde and a preparation method thereof, mainly solving the problems of low yield and low selectivity of the catalyst in the prior art. The catalyst comprises at least one selected from SiO2 or Al2O3 as a carrier and an active ingredient represented as Mo12BiaFebCocSbdEreXfYgZhOx, wherein, X isat least one selected from W, V, Ni, Cr, Mn, Nb or Re, Y is at least one selected from Sn, Sr, Zn, Ti or Zr, and Z is at least one selected from K, Rb, Na, Li, Tl or Cs. The invention can be applied in the industrial production of methy acraldehyde.

Description

technical field [0001] The invention relates to a multi-component composite oxide catalyst for preparing 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, Nippo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J23/887B01J23/889C07C27/14C07C47/22C07C45/35C07C45/37C07C57/05C07C51/25C07C51/23
Inventor 李静霞汪国军
Owner CHINA PETROLEUM & CHEM CORP
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