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Olefines double bond isomerizing catalyst and its preparation method

A technology of olefin double bond and catalyst, applied in the field of olefin double bond isomerization catalyst and its preparation, can solve the problem of poor stability of olefin double bond isomerization reaction, small specific surface area, and no double bond isomerization involving large specific surface area Catalyst preparation method and other issues, to achieve good technical effect, large specific surface area effect

Active Publication Date: 2008-02-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] One of the technical problems to be solved by the present invention is to provide a new olefinic double bond isomerization reaction for the problem that the specific surface area of ​​the alkaline earth metal oxide catalyst in the prior art is small and the stability of the olefinic double bond isomerization reaction is poor. Bond isomerization catalyst; the second technical problem to be solved by the present invention is that the preparation method of double bond isomerization catalyst with large specific surface area is not involved in the existing organic technology, and a new preparation method of olefin double bond isomerization catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Hydrolysis and drying of MgO

[0028] Weigh 50 grams of commercial MgO, add 200 milliliters of methanol, and heat and stir the obtained white turbid solution in a water bath at 50°C for 5 hours, then filter the water in the solution with suction, and dry the product at 120°C for 6 hours, which is designated as A.

Embodiment 2

[0030] Hydrolysis and drying of MgO

[0031] Weigh 50 grams of commercial MgO, add 300 milliliters of deionized water, heat and stir the obtained white turbid solution in a water bath at 60°C for 2 hours, then let it stand for 3 hours, filter the water in the solution, and dry the product at 80°C for 12 hours, record for B.

Embodiment 3

[0033] Hydrolysis and drying of CaO

[0034] Weigh 50 grams of commercial CaO, add 400 milliliters of ethanol, heat and stir the obtained white turbid solution in a water bath at 90°C for 1 hour, then let it stand for 3 hours, filter the water in the solution, and dry the product at 80°C for 12 hours, denoted as C .

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PUM

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Abstract

The present invention relates to an olefin isomerization catalyst and a preparation method of the catalyst. The present invention mainly solves the problem that the former similar catalyst has the disadvantages of low specific surface area, little active sites and bad stability. The present invention solves the problem well by adopting a technical proposal that a proper hydroxyl polar solvent is selected; an alkaline earth oxide is hydrated, dried and calcined; the temperature and time are controlled during the course of preparation, and an olefin double-bond isomerization catalyst with larger specific surface area and more active sites is obtained, and which can be used for industrial productions of a dismutation of ethylene and butylene for producing propylene and a butylene double-bond isomerization.

Description

technical field [0001] The invention relates to an olefin double bond isomerization catalyst and a preparation method thereof. Background technique [0002] Double bond isomerization, that is, the transfer of the position of a double bond in an olefinic compound, can convert relatively less valuable or excess olefins into more valuable or relatively less isomers. [0003] At present, the market demand for α-olefins, such as 1-butene, 1-hexene, etc., is gradually increasing. The production of commercial alpha olefins is usually accompanied by the generation of large amounts of isomers. Industrial C 4 Taking logistics as an example, in addition to 1-butene, 2-butene also accounts for a large proportion. 2-butene can be converted to 1-butene by double bond isomerization. [0004] CH 2 =CH-CH 2 -CH 3 CH 3 -CH=CH-CH 3 [0005] On the other hand, in some processes, the double bond isomerization reaction will change the boiling point of olefins, thus facilitating the sep...

Claims

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Application Information

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IPC IPC(8): B01J23/02B01J21/10C07C5/25C07C11/02
CPCY02P20/52
Inventor 刘苏谢在库王仰东徐炜徐舟波
Owner CHINA PETROLEUM & CHEM CORP
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