Synthesis of LPG via DME from syngas in two-stage reaction system

被引：25

作者：

Ma, Xiangang ^{[1
]}

Ge, Qingjie ^{[1
]}

Ma, Junguo ^{[1
]}

Xu, Hengyong ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

来源：

FUEL PROCESSING TECHNOLOGY | 2013年 / 109卷

关键词：

LPG synthesis; Two-stage; Syngas; DME; Coke burning; LIQUEFIED PETROLEUM GAS; DIMETHYL ETHER; HYBRID CATALYSTS; STEP SYNTHESIS; ZEOLITE; REGENERATION; PERFORMANCE; ALKYLATION; GASOLINE; FUEL;

D O I：

10.1016/j.fuproc.2013.01.002

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Synthesis of liquefied petroleum gas (LPG) via dimethyl ether (DME) from syngas was carried out in a two-stage reaction system, where syngas was transformed to DME in the first stage over the Cu-Zn-Al/ZSM-5 catalyst and then to hydrocarbons in the second stage over the Pd-Y catalyst. CO conversion and LPG selectivity were dominated by the first and second stage, respectively. CO conversion could be kept at a high level through the gradual increase of reaction temperature of the first stage, although there was a slight deactivation for the Cu-Zn-Al/ZSM-5 catalyst. LPG selectivity in hydrocarbons was more than 75% due to the proper pore size of Y zeolite and the presence of hydrogen. Coke deposition on Y zeolite was the reason for the decrease of LPG selectivity, but fortunately the selectivity of LPG could be recovered to a great extent by coke burning. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

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