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Method for preparing hexene-1 through C6 component isomerization

A technology for isomerization and hexene, which is used in isomerization to produce hydrocarbons, chemical instruments and methods, organic chemistry, etc., and can solve the problems of low selectivity of target products and low reaction space velocity.

Active Publication Date: 2013-12-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the problem of low target product selectivity and low reaction space velocity existing in the prior art, and a new method for isomerizing C6 components to generate hexene-1 is provided

Method used

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  • Method for preparing hexene-1 through C6 component isomerization
  • Method for preparing hexene-1 through C6 component isomerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 50 grams of commercial MgO, add 112.5 grams of oxalic acid, and add an acid solution with a mass concentration of 5%. After the mixed solution is heated and stirred in a water bath at 50°C for 5 hours, the water in the solution is filtered with suction, and the product is dried at 120°C for 6 hours. The obtained product was calcined at 400° C. for 5 hours, and the obtained product was designated as JT-1.

[0025] Install 10 grams of catalyst in a Φ25mm fixed-bed reactor, use mixed C6 components as raw materials at a weight space velocity of 1 hour -1 , 250°C and 1MPa conditions to evaluate the catalyst performance, the results are shown in Table 2.

[0026]

Embodiment 2

[0028] Weigh 50 grams of commercial MgO, add 120.09 grams of citric acid, and a solution with a mass concentration of 1%, to obtain a mixed solution, heat and stir it in a water bath at 80°C for 4 hours, then let it stand for 3 hours, filter the water in the solution, and the product is at 80°C After drying for 3 hours, the resulting product was supported on SiO 2 (5% by mass), calcined at 500°C for 8 hours, and the obtained product is designated as JT-2.

[0029] Install 10 grams of catalyst in a Φ25mm fixed-bed reactor, and use mixed C6 components as raw materials at a weight space velocity of 10 hours -1 , 300°C and 0.5MPa conditions to evaluate the catalyst performance, the results are shown in Table 2.

[0030]

Embodiment 3

[0032] Weigh 50 grams of commercial CaO, add 5.54 grams of carbonic acid, and a solution with a mass concentration of 10%, to obtain a mixed solution, heat and stir in a water bath at 90°C for 1 hour, then let it stand for 3 hours, filter the water in the solution, and bake the product at 100°C After drying for 10 hours, the obtained product was supported on activated carbon (mass content 10%), and calcined at 300°C for 12 hours, and the obtained product was designated as JT-3.

[0033] Install 10 grams of catalyst in a Φ25mm fixed-bed reactor, and use mixed C6 components as raw materials at a weight space velocity of 20 hours -1 , Catalyst performance was evaluated at 400°C and 2MPa, the results are shown in Table 2.

[0034]

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Abstract

The present invention relates to a method for preparing hexene-1 through C6 component isomerization, wherein problems of low target product selectivity and low reaction space velocity in the prior art are mainly solved with the present invention. The technical scheme comprises that a C6 component is adopted as a raw material, and the raw material and a catalyst are subjected to a contact reaction at a reaction temperature of 200-400 DEG C under a reaction pressure of 0-5 MPa at a weight space velocity of 1-50 h<-1> to produce a hexene-1-containing effluent, wherein a specific surface area of the isomerization catalyst is 200-1000 m<2> / g, a pore volume is 0.3-1.0 m<3> / g, an average pore size is 6-12 nm, and a surface alkaline site concentration is 0.3-10.0 mumol / g. With the technical scheme, the problems in the prior art are well solved, and the method can be used for industrial production of hexene-1 preparation through mixing C6 component isomerization.

Description

technical field [0001] The invention relates to a method for preparing hexene-1 by isomerizing C6 components. Background technique [0002] As a high value-added olefin product, the synthesis of hexene has attracted much attention. At present, the conventional preparation method of hexene in industry is to generate 1-hexene through ethylene polymerization, and the catalyst used is an alkylated metal catalyst. Through olefin disproportionation technology, relatively excess low-value-added C4 olefins can be converted into high-value-added hexene-3 and ethylene, and the product hexene-3 needs to be converted into high-value-added hexene-1 through isomerization. [0003] CN200410004481.X reported a skeletal isomerization catalyst of olefins. The catalyst used in this technology is a molecular sieve with twelve-membered ring channels, and the silicon content is 1-20% by weight. [0004] CN100379712C reported a method for high-purity magnesium oxide as an isomerization catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/107C07C5/25B01J21/10B01J21/14B01J21/18B01J23/02
Inventor 董静刘苏
Owner CHINA PETROLEUM & CHEM CORP
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