Catalytic performance on CuO-Cr2O3-Ga2O3 mixed oxides for water gas shift reaction: Effects of Ga/Cr molar ratio

Title
Catalytic performance on CuO-Cr2O3-Ga2O3 mixed oxides for water gas shift reaction: Effects of Ga/Cr molar ratio
Authors
김아롱이발상박명준문동주배종욱
Keywords
WGS; CuO-Cr2O3-Ga2O3; Surface area of copper; Ga/Cr molar ratio; Copper crystallite size
Issue Date
2012-03
Publisher
Catalysis communications
Citation
VOL 19, 66-69
Abstract
Water gas shift (WGS) reaction was carried out on the coprecipitated CuO–Cr2O3–Ga2O3 mixed oxides to elucidate the effects of Ga2O3 species to catalytic performances. WGS catalysts are prepared at a fixed molar ratio of Cu/(Cr+Ga) at 1.0/0.1 by varying Ga/Cr molar ratio from 0 to 4. The catalytic activities on CuO–Cr2O3– Ga2O3 are found to be in the shape of volcano curve in terms of Ga/Cr molar ratio and the highest activity was observed on the catalyst having equimolar ratio of Ga/Cr in all tested temperature ranges of 160–280 °C. The observed activities are strongly related with the metallic surface area of copper crystallites, and the high surface area of metallic copper could be obtained by controlling the formation rate of copper–chromium nuclei at an optimum Ga/Cr molar ratio on CuO–Cr2O3–Ga2O3 mixed oxides.
URI
http://pubs.kist.re.kr/handle/201004/42042
ISSN
15667367
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