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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 2
BKCSDE 31(2)
February 20, 2010 

 
Title
Pretreatment Effect on CO Oxidation over Highly Ordered Mesoporous Silver Catalyst
Author
Jeong Kuk Shon, Jung Nam Park*, Seong Hee Hwang, Mingshi Jin, Kiyoung Moon, Jin Hyo Boo, Tae Hee Han, Ji Man Kim*
Keywords
Nanostructure material, Mesoporous silver, Heterogeneous catalyst, CO oxidation, Pretreatment effect
Abstract
Highly ordered mesoporous silver material was successfully synthesized from a mesoporous silica template (KIT-6) with 3-D channel structure using the nano-replication method. The effects of H2 or O2 pretreatments on the catalytic performance of the mesoporous silver were investigated using a temperature programmed CO oxidation technique in a fixed bed reactor. The mesoporous silver material that was pretreated with H2 exhibited an excellent catalytic activity compared to the as-prepared and O2-pretreated catalysts. Moreover, this present mesoporous silver material showed good catalytic stability. For the CO oxidation, the apparent activation energy of the H2-pretreated mesoporous silver catalyst was 61 ± 0.5 kJ mol?1, which was also much lower than the as-prepared (132 ± 1.5 kJ mol?1) and O2-pretreated (124 ± 1.4 kJ mol?1) catalysts.
Page
415 - 418
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