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Process for butene disproportionation to hexene

A technology of butene and hexene, which is applied in the field of butene disproportionation to hexene, can solve the problem of high reaction temperature and achieve good disproportionation activity

Active Publication Date: 2014-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] When the method in the above documents is used for the reaction of butene disproportionation to hexene, there is a problem that the reaction temperature is high

Method used

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  • Process for butene disproportionation to hexene
  • Process for butene disproportionation to hexene
  • Process for butene disproportionation to hexene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1 kg of γ-Al 2 o 3 Add 10 grams of squat powder to the mixer and stir for 45 minutes. After kneading evenly, add 400 grams of aluminum sol and 36 grams of ammonium perrhenate, and add 1 kilogram of deionized water at the same time, knead, extrude, dry, and then heat Roast for 4 hours to obtain a finished catalyst with a rhenium oxide content of 4%. The evaluation of the catalyst was carried out on an olefin disproportionation evaluation device, and the raw material was 1-butene with a weight content of 99.9%. The reaction is at a temperature of 40°C, a pressure of 0.5MPa, and a weight space velocity of 1-butene for 8 hours -1 Under the conditions of evaluation, the evaluation results are shown in Table 1, denoted as SL-1.

Embodiment 2

[0023] By each step among the embodiment 1, only changing ammonium perrhenate is 72 grams, and the loading capacity of the catalyst rhenium oxide that makes is 8%, and in changing reaction conditions, reaction temperature is 80 ℃, reaction pressure is that 0.2MPa and weight empty 10 hours -1 , the evaluation results are shown in Table 1, recorded as SL-2.

Embodiment 3

[0025] By each step in embodiment 1, only changing ammonium perrhenate is 108 grams, and the loading capacity of the catalyst rhenium oxide that makes is 12%, and reaction temperature is 100 ℃, reaction pressure is 0.4MPa and weight empty in changing reaction condition 16 hours -1 , the evaluation results are shown in Table 1, recorded as SL-3.

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Abstract

The invention relates to a method for preparing hexene by butylene disproportionation reaction, which mainly solves the problem of high reaction temperature in the prior art. Aiming at well solving the problem, the method adopts the technical scheme that 1-butylene is used as a raw material, and the raw material comes into contact with a catalyst to react and generate an effluent containing the hexene in a fixed bed reactor when the temperature is 20 to 120 DEG C, the reaction pressure is 0 to 1 MPa by the absolute pressure, and the weight hourly space velocity is 6 to 20 h<-1>, wherein the catalyst comprises the following raw materials in parts by weight: 1 to 30 parts of rhenium oxide and 70 to 99 parts of alumina carrier. The method can be used for the industrial production of the hexene prepared by the butylene disproportionation reaction.

Description

technical field [0001] The invention relates to a method for producing hexene by disproportionation of butene. 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 and ethylene. [0003] Olefin disproportionation (Olefin metathesis) is a conversion process of olefins. Under the action of a transition metal catalyst (such as W, Mo, Re, etc.), the C=C double bond in the olefin is broken and re-formed, thereby obtaining a new olefin product. We can simply express the disproportionation process of alkenes from the following reaction formula: [0004] [0005] [0006] R in the reaction f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C11/107C07C2/10B01J23/36
Inventor 王仰东宣东张惠明
Owner CHINA PETROLEUM & CHEM CORP