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Method for preparing methylacrolein through oxidization of isobutene or tert-butyl alcohol

A technology of methacrolein and tert-butanol, applied in chemical instruments and methods, preparation of carbon-based compounds, preparation of organic compounds, etc., can solve problems such as low yield of methacrolein

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that there is a problem that the yield of methacrolein is low in the existing reaction of isobutene or tert-butanol oxidation to methacrolein, and a new method for producing methyl acrolein by oxidation of isobutene or tert-butanol is provided. acrolein method

Method used

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  • Method for preparing methylacrolein through oxidization of isobutene or tert-butyl alcohol
  • Method for preparing methylacrolein through oxidization of isobutene or tert-butyl alcohol
  • Method for preparing methylacrolein through oxidization of isobutene or tert-butyl alcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 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 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.

[0035] 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, 1.88 g Ce(NO 3 ) 3 ·3H 2 O, 0.7 g Zn(NO 3 ) 2 ·6H 2 O, 0.27 g CsNO 3 Make material B after stirring and dissolving.

[0036] 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 respectively to solution A under stirring to form a catalyst slurry, add 5.13 g of urea, 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 A cylindrical object of φ3.5x3.5mm, and then calcined at hi...

Embodiment 2

[0039] 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.

[0040] 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 Ce(NO 3 ) 3 ·3H 2 O, 0.7 g Zn(NO 3 ) 2 ·6H 2 O, 0.27 g CsNO 3 Make material B after stirring and dissolving.

[0041] 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 respectively to solution A under stirring to form a catalyst slurry, add 5.60 g of oxalic acid, 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 A cylindrical object of φ3.5x3.5mm, and then calcined at high temperature to obtain...

Embodiment 3～11

[0044] Prepare catalyst by each step of [embodiment 2], concrete result is listed in table 1. Under the evaluation condition identical with [Example 2], reaction result is listed in Table 2.

[0045]

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Abstract

The invention relates to a method for preparing methylacrolein through oxidization of isobutene or tert-butyl alcohol, and mainly solves the problems that methylacrolein is not high in yield and not high in selectivity in the prior art. At least one of SiO2 or Al2O3 is selected as a carrier, and an active ingredient with the following general formula of Mo12BiaFebCocSbdCeeXfYgZhOx is contained, wherein X is at 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. Through adopting the above technical scheme, the problems in the prior art are well solved, and the method can be used in industrial production of methylacrolein.

Description

technical field [0001] The invention relates to a method for preparing methacrolein by oxidation of isobutene or tert-butanol. 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 successively developed...

Claims

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Application Information

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IPC IPC(8): C07C47/22C07C45/35C07C45/37B01J23/889B01J23/887B01J23/888
CPCB01J23/002B01J23/8876B01J23/8877B01J23/8878B01J23/888B01J23/8898B01J2523/00C07C45/35C07C45/37C07C47/22B01J2523/68B01J2523/21B01J2523/842B01J2523/845B01J2523/53B01J2523/3712B01J2523/69B01J2523/27B01J2523/15B01J2523/41B01J2523/31B01J2523/55B01J2523/28B01J2523/43B01J2523/14B01J2523/74B01J2523/847B01J2523/56B01J2523/13B01J2523/72B01J2523/24
Inventor 李静霞汪国军陈庆龄
Owner CHINA PETROLEUM & CHEM CORP
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