Catalyst for production of low carbon olefin from methanol through iodination method, and preparation method thereof
A low-carbon olefin, iodine method technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of easy carbon deposition and deactivation of catalysts, short life, etc., and delay the time of carbon deposition and coking. , the effect of prolonging the service life
Inactive Publication Date: 2015-03-11
GUIZHOU UNIV
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Problems solved by technology
However, this method has the problem that the catalyst is prone to carbon deposition and deactivation during the reaction, and the service life is short.
Method used
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Embodiment 1-5
[0011] A kind of preparation method that is used for the preparation method of the catalyst of iodomethanol to produce low carbon olefins, comprises: SAPO-34 and mass ratio are n(SiO 2 ):n(Al 2 o 3 )=45-360 ZSM-5 molecular sieves are mechanically mixed, and the mass ratio is m(ZSM-5):m(SAPO-34)=0.1-1.0 (see Table 1 for details). have to.
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The present invention discloses a catalyst for production of a low carbon olefin from methanol through an iodination method, and a preparation method thereof. The preparation method comprises: carrying out mechanical mixing on SAPO-34 and a ZSM-5 molecular sieve according to a mass ratio of ZSM-5:SAPO-34 of 0.1-1.0, completely grinding, tableting, and crushing, wherein a Si / Al molar ratio in the ZSM-5molecular sieve is SiO2 / Al2O3 of 45-360. The catalyst of the present invention is used for production of the low carbon olefin from methanol through the iodination method, and has the long service life.
Description
technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a catalyst for producing low-carbon olefins from methanol by iodo method, and also relates to a preparation method of the catalyst for producing low-carbon olefins from methanol by iodo method. Background technique [0002] Low-carbon olefins are important basic chemical raw materials, and there is huge room for growth in domestic and foreign markets. At present, most of the world's ethylene production comes from naphtha steam cracking technology. Propylene production is mainly based on steam cracking to produce ethylene and by-products of catalytic cracking in refineries. have to. Due to the limited oil reserves in the world, the traditional method of producing low-carbon olefins can no longer meet the market demand. Countries all over the world have begun to devote themselves to the development of non-petroleum routes to produce ethylene and propylene-base...
Claims
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IPC IPC(8): B01J29/85C07C11/04C07C11/06C07C1/20
CPCY02P20/52Y02P30/20Y02P30/40
Inventor 刘飞曹建新李婷
Owner GUIZHOU UNIV