期刊
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
卷 28, 期 -, 页码 566-571出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2015.12.032
关键词
Olefins; Dimethyl ether; MOR zeolites; Dealumination; Natural zeolites
资金
- King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit in Center of Research Excellence in Nanotechnology at King Fahd University of Petroleum & Minerals (KFUPM) [13-NAN1702-04]
Recent development in shale gas production ensures the availability of cheap feedstock for petrochemicals. Dimethyl ether (DME) is one of the most promising derivatives from natural gas. In this work, we developed catalysts from low-cost natural minerals for the conversion of DME to olefins as one of the most important feedstocks for the petrochemical industry. The catalytic performance of a series of hierarchical mordenite zeolites derived from natural mineral by nitric acid dealumination was studied in the conversion of dimethyl ether (DME) to light olefin compounds. The degree of dealumination was strongly dependent on the treatment period. The DME conversion and olefins selectivity over these materials were investigated at 350 degrees C and 1 atm. The nitric acid dealumination has a positive effect on both DME conversion and ethylene to butylene selectivity. The fabrication.of hierarchical zeolites from natural minerals will stimulate related studies to produce cost-effective catalysts derived from natural resources. (C) 2015 Elsevier B.V. All rights reserved.
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