title: The influence of acidities of boron- and aluminium-containing MFI zeolites on co-reaction of methanol and ethene.
abstract: A series of boron- and aluminium-containing MFI zeolites were synthesized and various characterization techniques, such as NMR ((27)Al, (29)Si and (11)B), were employed to study the acidities of zeolites. Moreover, in situ IR was applied to investigate the interaction of methanol and ethene with the acid sites, and those catalytic materials were used for co-reaction of methanol and ethene to produce propene. The production of propene was related to the Al content of the zeolites with Si/Al ratios of higher than 90. It is implied that the presence of boron during the synthesis directed the aluminium to occupy certain tetrahedral sites in the zeolite framework, thus preventing the formation of ethene oligomers, and resulting in increased propene selectivity.
authors: Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan.
authors: Qingjun
authors: Q
authors: Zhu
authors: Junko N
authors: JN
authors: Kondo
authors: Toshiyuki
authors: T
authors: Yokoi
authors: Tooru
authors: T
authors: Setoyama
authors: Masashi
authors: M
authors: Yamaguchi
authors: Takahiko
authors: T
authors: Takewaki
authors: Kazunari
authors: K
authors: Domen
authors: Takashi
authors: T
authors: Tatsumi