2016年5月
Selective formation of light olefins from dimethyl ether over MCM-68 modified with phosphate species
CATALYSIS TODAY
- ,
- ,
- 巻
- 265
- 号
- 開始ページ
- 218
- 終了ページ
- 224
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.cattod.2015.08.061
- 出版者・発行元
- ELSEVIER SCIENCE BV
To control the acid sites distribution in MCM-68 zeolite catalyst, phosphate-loaded MCM-68 catalyst was prepared by impregnation with aqueous solution of (NH4)(2)HPO4 onto MCM-68 and subsequent calcination. Phosphate impregnation was effective for increasing the selectivity to propylene and butylenes. The propylene/ethylene ratio in the products was significantly increased by phosphate modification. The considerable enhancement of the yields of propylene and butylenes could be attributed to diminution of stronger acid sites, especially the acid sites distributed on the external surface of MCM-68 catalyst. Furthermore, phosphate-modified MCM-68 showed high resistance to coke formation, indicating this modification technique is useful to obtain long-lived catalysts in DTO reaction. (C) 2015 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.cattod.2015.08.061
- ISSN : 0920-5861
- eISSN : 1873-4308
- Web of Science ID : WOS:000370763000031