01702nab a2200205 4500 20260520000819.0 260224s2009 xxu Influence of catalytic functionalities of zeolites on product selectivities in methanol conversion feb. 2009 15/05/2009 ; 29/04/2009 5 p. ; 593-598 Transcripción del resúmen publicado por el autor: In an attempt to understand the textural and acidic properties of zeolites on the methanol conversion and product selectivities, three zeolites, ferrierite, clinoptilolite, and SAPO-34, are studied. Temperature-programmed desorption of ammonia (NH3-TPD) indicated the presence of more weak acidity on ferrierite and clinoptilolite compared to the considerable strong acidity on SAPO-34. At 250 °C, all three samples exhibited comparable methanol conversions, but relatively lower dimethyl ether (DME) and higher light olefins are observed on SAPO-34. Ferrierite and clinoptilolite samples exhibited high selectivity for the formation of DME even at higher reaction temperatures (400 °C), while the product shifted from DME to light olefins with an increasing reaction temperature on SAPO-34. Especially, ferrierite, owing to its mild acidity and small pore size, is found to be a good catalyst for the methanol conversion to DME at 250 °C without significant deactivation for 100 h time on stream. Energy & fuels 23 ARTICULO Baek, Seung-Chan 41046 Lee, Yun-Jo 41047 Jun, Ki-Won 41048 169663 169663 http://pubs.acs.org/doi/full/10.1021/ef800736n 0 0 0 0 237482 BVIAPG BVIAPG 2026-03-05 200044470 0 200044470 2026-03-05 15:11:54 2026-03-05 ARTICULO