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.

中文翻译：

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HMOR沸石在二甲醚羰基化中的晶体尺寸敏感性

研究了HMOR的晶体尺寸（从微观尺寸到50 nm）以及明显相似的酸位点密度，对二甲醚（DME）羰基化反应的催化性能的影响。HMOR的晶体大小对DME羰基化反应的失活速率敏感，可以在200 nm附近获得更高的稳定性。表征研究表明，MA产物的扩散在DME羰基化的诱导和失活期间起着关键作用。这些将有助于指导大规模合成具有高效率的DME羰基化的丝光沸石催化剂。