Catalytic Activity of Cu-Zn-Al-Mn admixed with gamma-alumina for synthesis of DME from syngas: manganese effect or just method of preparation?

Title
Catalytic Activity of Cu-Zn-Al-Mn admixed with gamma-alumina for synthesis of DME from syngas: manganese effect or just method of preparation?
Authors
팔구나딘야티정광덕
Keywords
메탄올; 합성가스; DME; Methanol; Dimethyl ether; Cu-Zn-based catalyst; Syngas; Preparation method
Issue Date
2010-10
Publisher
Reaction Kinetics Mechanisms and Catalysis
Citation
VOL 101, NO 1, 117-128
Abstract
A series of methanol synthesis catalysts, CuO/ZnO/Al2O3 and CuO/ ZnO/Al2O3 containing 5 mol% of manganese physically admixed with c-Al2O3 were tested for the direct synthesis of dimethyl ether from syngas. The catalysts were prepared by coprecipitation of the metal nitrates with several types of alkali carbonate solution. Aqueous solutions of Na2CO3, NaHCO3/Na2CO3 buffer, and NaHCO3 were used as the precipitating agents to investigate the effects of the preparation method on the microstructure of the precursors and on the physicochemical properties and reactivity of the resulting catalysts. It was found that the most responsible factor in determining the catalytic activity of the methanol synthesis catalyst is the preparation method rather than the incorporation of manganese as the structure modifier. There is a substantial correlation between the copper metal surface area and the activity of the catalyst derived from the structurally active precursor, hydrotalcite-like layered double hydroxides.
URI
http://pubs.kist.re.kr/handle/201004/38343
ISSN
1878-5190
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE