Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70666
標題: Effects of the ratio of Cu/Co and metal precursors on the catalytic activity over Cu-Co/Al2O3 prepared using the polyol process
作者: Lu, C.Y.
Tseng, H.H.
Wey, M.Y.
Liu, L.Y.
Chuang, K.H.
關鍵字: Dispersion
Nanoparticle
Polyol process
Bimetallic catalyst
selective reduction
alumina catalysts
activated carbon
oxide
catalysts
silver
no
hydrocarbons
performance
oxidation
cobalt
期刊/報告no:: Materials Science and Engineering B-Advanced Functional Solid-State Materials, Volume 157, Issue 1-3, Page(s) 105-112.
摘要: Cu-Co bimetallic catalysts were prepared using a simple polyol process. The effects of various metal precursors (nitrate, acetate, and chloride) and Cu/Co ratios on the activities of the catalysts were evaluated for toluene oxidation and NO reduction. The results indicated that the use of the metal precursor Cu-Co acetate in preparing the bimetallic catalysts resulted in good metal dispersion and high catalytic activity. When the atomic Cu/Co ratio was 0.21 in the Al2O3-supported catalyst, the dispersion of active sites was promoted by the Cu, and the catalytic activity was stable over the reaction time. CuO and Cu-0 species and large particle sizes (20 nm) formed when the Co loading weight in the catalyst increased, and conversion decreased. When the reaction temperature was 300,C, NO and toluene were able to be simultaneously removed with high conversion rates (83% and 98%). (C) 2009 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/70666
ISSN: 0921-5107
文章連結: http://dx.doi.org/10.1016/j.mseb.2009.01.005
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