Plasma-Pretreated Catalyst for Methanol Synthesis From Syngas

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Title:	Plasma-Pretreated Catalyst for Methanol Synthesis From Syngas
Authors:	Lee,HM;Juan,LK;Yeh,FM;Li,HY;Chen,HL;Chang,MB;Chen,SH;Tzeng,CC
Contributors:	環境工程研究所
Keywords:	DIELECTRIC-BARRIER DISCHARGE;NONTHERMAL PLASMA;TECHNOLOGIES;CU
Date:	2009
Issue Date:	2010-06-29 18:20:53 (UTC+8)
Publisher:	中央大學
Abstract:	A new catalyst preparation method by combining the traditional coprecipitation method with an oxygen plasma pretreatment was developed in this paper. The ternary Cu/Zn/Al catalyst powders were first prepared by coprecipitation method, and then pretreated by the plasma in a fluidized-bed dielectric barrier discharge reactor with a carrier gas of a molar ratio of O-2/Ar = 5/95. Then, the plasma-pretreated catalyst was conducted with the methanol synthesis test at the following conditions: H-2/CO/N-2 = 64/32/4, Q = 900 sccm, P = 4 MPa, and T = 255 degrees C. The plasma pretreatment could enhance the catalytic activity, e. g., the methanol selectivity increased from 28% to 72% and the methanol yield from 0.19 to 0.52 g/g(cat). .h, although the CO and H-2 conversions were slightly decreased. On the other hand, the BET, inductively coupled plasma/optical emission spectroscopy, and X-ray diffraction analysis found that the catalytic properties did vary after plasma pretreatment. In short, this paper reveals that the plasma pretreatment is a viable process for preparation of Cu/Zn/Al catalyst in terms of methanol synthesis.
Relation:	IEEE TRANSACTIONS ON PLASMA SCIENCE
Appears in Collections:	[Graduate Institute of Environmental Engineering ] journal & Dissertation

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