TY - JOUR
T1 - Monolithic gold catalysts
T2 - Preparation and their catalytic performances in water gas shift and CO oxidation reactions
AU - Teo, Jaclyn Seok Kuan
AU - Teh, Siew Pheng
AU - Addiego, William P.
AU - Zhong, Ziyi
AU - Borgna, Armando
AU - Truitt, Ralph E.
N1 - Funding Information:
This research was financially supported by Corning Incorporated and Agency for Science, Technology and Research (A∗STAR) in Singapore. The Authors would like to thank Drs. P.K Wong, Magali Bonnier and Keith Carpenter in ICES for their kind support of this project.
PY - 2011/5
Y1 - 2011/5
N2 - Two different protocols for washcoating supported Au powder catalysts, prepared via different methods, onto a cordierite monolith were developed. The influence of the pH, the type of washcoat binder and organic solvent on the Au particle size and on the washcoat adherence was investigated. For Au powder catalysts prepared by a sonochemical method, the Au particle size was mainly influenced by the pH value, thus an one-stage coating process was applied at pH between 6-8; for Au powder catalysts prepared by co-precipitation and deposition-precipitation methods, the Au particle size was mainly influenced by the type of organic solvent and binders used. Therefore, a two-stage washcoating process was developed, in which, the catalyst support (α-Fe 2O3) was first coated, and the Au powder catalyst was then successively coated on this first layer with a benign solvent. The catalytic performances of the powder and monolithic Au catalysts in CO oxidation and WGS reactions were investigated.
AB - Two different protocols for washcoating supported Au powder catalysts, prepared via different methods, onto a cordierite monolith were developed. The influence of the pH, the type of washcoat binder and organic solvent on the Au particle size and on the washcoat adherence was investigated. For Au powder catalysts prepared by a sonochemical method, the Au particle size was mainly influenced by the pH value, thus an one-stage coating process was applied at pH between 6-8; for Au powder catalysts prepared by co-precipitation and deposition-precipitation methods, the Au particle size was mainly influenced by the type of organic solvent and binders used. Therefore, a two-stage washcoating process was developed, in which, the catalyst support (α-Fe 2O3) was first coated, and the Au powder catalyst was then successively coated on this first layer with a benign solvent. The catalytic performances of the powder and monolithic Au catalysts in CO oxidation and WGS reactions were investigated.
KW - CO oxidation
KW - Monolith
KW - Stability
KW - Supported Au powder catalyst
KW - WGS reaction
UR - http://www.scopus.com/inward/record.url?scp=79955480778&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2011.01.166
DO - 10.1016/j.ijhydene.2011.01.166
M3 - 文章
AN - SCOPUS:79955480778
SN - 0360-3199
VL - 36
SP - 5763
EP - 5774
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 10
ER -