N-alkene isomerization catalyst, method for preparing same and application of n-alkene isomerization catalyst

A technology for olefin isomerization and catalysts, which is applied in the field of normal olefin isomerization catalysts and its preparation, can solve problems such as high cost, performance degradation, and easy performance degradation, and achieves maintenance of yield, reduction of quantity, and reduction of other side effects The effect of the reaction
CN106040293AActive Publication Date: 2016-10-26山东迅达化工集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
山东迅达化工集团有限公司
Publication Date
2016-10-26

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Abstract

The invention provides an n-alkene isomerization catalyst. The n-alkene isomerization catalyst comprises (by weight) 50-90% of molecular sieves and the balance aluminum oxide. The molecular sieves comprise (by weight) 75-90% of SAPO-11 and 10-25% of ZSM-5; the sizes of micro-particles of the molecular sieves in the n-alkene isomerization catalyst are 1-2 micrometers. The n-alkene isomerization catalyst has the advantages that the n-alkene isomerization catalyst is high in n-alkene isomerization activity and isoalkene yield, and the high isoalkene yield can be kept for a long time; the n-alkene isomerization catalyst is long in single-pass running period, low in repeated coke-burning regeneration performance decreasing range, suitable for procedures for preparing isobutylene from n-butene by means of isomerization reaction and procedures for preparing isopentene from n-pentene by means of isomerization reaction and particularly suitable for procedures for preparing isobutylene by means of post-ether carbon tetra-n-butene isomerization.
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Description

technical field

[0001] The invention belongs to the field of catalysts, and relates to a normal olefin isomerization catalyst and a preparation method and application thereof. Background technique

[0002] Methyl tert-butyl ether (MTBE) has become an excellent gasoline additive because of its high octane number, low vapor pressure, and good solubility in gasoline fraction hydrocarbons in newly formulated gasoline and oxygenated gasoline. In recent years, its demand has increased rapidly in recent years, and the output of isobutene obtained by traditional petroleum catalytic cracking and thermal processing is far from meeting the needs of etherification unit production.

[0003] The output material of the etherification unit producing MTBE, after methanol and ether are separated, has a normal butene content of more than 40%. Therefore, skeletal isomerization of the normal butene-rich material to produce isobutene can achieve the purpose of increasing isobutene production. Th...

Claims

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