Chinese Academy of Sciences

Shiyun Sang

Zhongmin Liu

Peng Fei Tian

Miao Yang

Lin Liu

Yue Yang

Bing Li

Hongyi Yang

Xiao Xiang

Yanli He

The present application discloses a catalyst, the catalyst contains a molecular sieve, there is at least one-dimension 8-membered ring channel in the molecular sieve structure, the diameter of a diffusible substance in the direction of the 8-membered ring channel is no less than 2.0 &#x212b;, the diameter of a substance that can be accommodated in the molecular sieve structure is no more than 6 &#x212b;; the catalyst is used for a methanol and/or dimethyl ether to propylene reaction, comprising contacting methanol and/or dimethyl ether with a methanol-to-propylene catalyst to obtain propylene.

Molecular sieve catalyst, preparation method therefor and application thereof

A preparation method for a metal-modified SAPO molecular sieve is disclosed, characterized in adding a raw powder of the SAPO molecular sieve to a solution containing metal ions for performing ion exchange, and then washing and drying the obtained solid after ion exchange, so as to obtain the metal-modified SAPO molecular sieve. The metal-modified SAPO molecular sieve prepared has a relatively high degree of crystallinity, and the metal elements occupy the ionic positions in the channels and/or cages of the SAPO molecular sieve, and the metal-modified SAPO molecular sieve shows excellent catalytic performance in the catalytic reaction.

Preparation method for metal-modified SAPO molecular sieve

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Dalian, China

Shiyun Sang