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Method for producing methyl-ethyl benzene by means of methylbenzene and ethylene

A technology of methyl ethyl benzene and ethylene, applied in the field of production of methyl ethyl benzene, can solve the problems of complex catalyst preparation, low ethylene conversion rate, high reaction temperature, etc., and achieve the effects of easy reaction and product diffusion, increased ethylene conversion rate, and simple preparation steps

Inactive Publication Date: 2016-03-02
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 problems of high reaction temperature, low ethylene conversion rate and complicated catalyst preparation in the prior art, and a new method for producing methylethylbenzene from toluene and ethylene is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 100 grams of MCM-22 molecular sieves with MWW topological structure were treated with 4000 grams of 10% (wt) ammonium nitrate solution at 80°C for 10 hours, and 70 grams of the obtained molecular sieves were weighed after drying and roasting, and 30 grams of oxidation Aluminum kneading and extruding, drying, and roasting are used to obtain methyl ethyl benzene catalyst A, and the active component MCM-22 molecular sieve has a weight content of 70%.

Embodiment 2

[0025] Treat 100 grams of mercerized molecular sieve with MOR topological structure with 4000 grams of 10% (wt) ammonium nitrate solution at 80°C for 10 hours, and weigh 60 grams of the obtained molecular sieve after drying and roasting, and knead with 40 grams of alumina Toluene catalyst B was obtained by extruding, drying and roasting, and the active component of mercerized molecular sieve was 60% by weight.

Embodiment 3

[0027] 100 grams of MCM-56 molecular sieves with MWW topological structure were treated with 4000 grams of 10% (wt) ammonium nitrate solution at 80°C for 10 hours, and 80 grams of the obtained molecular sieves were weighed after drying and roasting, and 20 grams of oxidation Aluminum kneading and extruding, drying, and roasting are used to obtain methyl ethyl benzene catalyst C, and the active component MCM-56 molecular sieve has a weight content of 80%.

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PUM

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Abstract

The invention relates to a method for producing methyl-ethyl benzene by means of methylbenzene and ethylene to mainly solve the problems of the prior art that reaction temperature is high, the ethylene conversion rate is low, and catalyst preparation is complicated. According to the method, methylbenzene and ethylene are taken as reaction materials and make contact with a catalyst to generate methyl-ethyl benzene at the reaction temperature of 150-250 DEG C, the reaction pressure of 1.0-5.0 MPa, the ethylene weight air speed of 0.1-1.0 h<-1>, and the molar ratio of methylbenzene to ethylene of 2-10. The catalyst is prepared from, by weight, 40-90 parts of microporous molecular sieve and 10-60 parts of binder, wherein the microporous molecular sieve is at least one of MWW topological structure molecular sieve, BEA topological structure molecular sieve, MOR topological structure molecular sieve and FAU topological structure molecular sieve. The method can be applied to industrial production of methyl-ethyl benzene by means of methylbenzene and ethylene.

Description

technical field [0001] The invention relates to a method for producing methylethylbenzene with toluene and ethylene, in particular to a method for producing methylethylbenzene with toluene and ethylene at low temperature. Background technique [0002] Methylbenzene is the raw material for the production of methyl styrene, and methyl styrene is a low-toxic and low-volatile monomer, which can be used to synthesize poly PMS, unsaturated polyester, BIMS, thermoplastic elastomer, ABS resin and other binary and ternary Copolymers are also widely used in the nuclear industry, polyacid reinforced fibers and alkyl coatings. However, the global production capacity of methyl styrene is relatively low, and it is still a small-scale specialty polymer monomer and has not become a mass-produced polymer monomer. [0003] In addition to the separation of a small part of methyl ethyl benzene from reforming C9 aromatics, most of the production of methyl ethyl benzene is through the formation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C15/02C07C2/66B01J35/10B01J29/18B01J29/80B01J29/08B01J29/70
CPCY02P20/52
Inventor 张斌杨为民孙洪敏宦明耀王振东
Owner CHINA PETROLEUM & CHEM CORP