Crystal size sensitivity of HMOR zeolite in dimethyl ether carbonylation

Catalysis Communications

Xiangnong Ding¹  Wenliang Zhu¹  XuDong Fang²  Fuli Wen³  Hongchao Liu³ 

[1] Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;University of Chinese Academy of Sciences, Beijing 100049, China;National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;

关键词: H-mordenite;    Crystal size;    Dimethyl ether;    Carbonylation;    Diffusion;   

DOI  :  

来源: DOAJ

【 摘 要 】

The effect of crystal size of HMOR from micro size to 50 nm, with the apparent similar acid site density, on catalytic performance for the dimethyl ether (DME) carbonylation was investigated. The crystal size of HMOR is sensitive to the deactivation rate of DME carbonylation reaction, and the higher stability around 200 nm can be achieved. The characterization studies reveal that the diffusions of MA product play a key role during the induction and deactivation period in DME carbonylation. These will be helpful for guiding the large-scale synthesis of mordenite zeolites catalysts with high efficiencies for DME carbonylation.

【 授权许可】

Unknown