Synthesis of Ga-containing CON-type material and its catalytic performance in methanol-to-ole fins reaction

被引：9

作者：

Park, Sungsik ^{[1
]}

Sato, Gakuji ^{[1
]}

Nishitoba, Toshiki ^{[1
]}

Kondo, Junko N. ^{[1
]}

Yokoi, Toshiyuki ^{[1
]}

机构：

[1] Tokyo Inst Technol, Inst Innovat Res, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan

来源：

CATALYSIS TODAY | 2020年 / 352卷

关键词：

CON zeolite; Metallosilicate; Ga-containing CON; MTO reaction; MTO catalyst; Propylene; High propylene-to-ethylene ratio; N2O DECOMPOSITION; ACID SITES; CRYSTAL-STRUCTURE; IR SPECTROSCOPY; AL DISTRIBUTION; DIMETHYL ETHER; ZSM-5; ZEOLITE; CONVERSION; FRAMEWORK; OLEFINS;

D O I：

10.1016/j.cattod.2019.12.008

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ga-containing CON-type materials were synthesized and its catalytic performance in methanol-to-olefins (MTO) reaction were evaluated. The state of Ga atoms in the CON framework was investigated by Ga-71 MAS NMR and UV-vis measurements. The effect of incorporation of Ga on the acidic properties of CON-type materials was investigated by NH3-TPD and FT-IR measurements with pyridine and CO as molecular probes. When Ga-containing CON-type zeolite was employed in MTO reaction, the yield to propylene were 60 C-atom %, as high as AlCON, but with the lower ethylene selectivity, leading to the higher propylene-to-ethylene (P/E) ratio.

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页码：175 / 182

页数：8

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