Spatial confinement effects of cage-type SAPO molecular sieves on product distribution and coke formation in methanol-to-olefin reaction

CATEGORY: METHANOL-TO-OLEFIN 
Spatial confinement effects of cage-type SAPO molecular sieves on product distribution and coke formation in methanol-to-olefin reaction

Type	Journal Article
Author	Jingrun Chen
Author	Jinzhe Li
URL	http://www.sciencedirect.com/science/article/pii/S1566736713004457
Volume	46
Pages	36-40
Publication	Catalysis Communications
Date	February 10, 2014
Abstract	Reports use of three types of 8-membered ring silicoaluminophosphate (SAPO) molecular sieves with different cage structures, SAPO-34, SAPO-18 and SAPO-35 in methanol-to-olefin (MTO) reaction. The main products over SAPO-34 and SAPO-18 were propene and butenes, while ethene and propene were predominantly generated over SAPO-35. Coke species formation was dependent on reaction temperature. It varied systematically with cage size. The differences in production distribution and generated coke species in the MTO reaction suggest great spatial confinement effects imposed by cage structure of SAPO catalysts.