A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Catalytic hydrolysis of COS over calcined CoNiAl hydrotalcite-like compounds modified by cerium
Abstract The catalytic performance of COS hydrolysis over calcined CoNiAl hydrotalcite-like compounds (HTLCs) modified by cerium was investigated. All catalysts were prepared by thermal decomposition of hydrotalcite-like precursors synthesized by co-precipitation method and characterized by various technologies. Among all catalysts studied, catalyst CoNiAl-50 exhibited excellent COS conversion. The changes of structural properties, oxidative properties of catalysts and increase of surface defect sites mainly accounted for the enhancements of the catalytic activities with addition of cerium. Element sulfur and the sulfate species accumulated on the surface which might contribute to catalyst poisoning and Ce could affect the formation and content of element sulfur and sulfate.
Graphical abstract Display Omitted Highlights ► CoNiAl hydrotalcite-derived mixed oxides modified with Ce were study. ► Cerium could be a potential active component for hydrolysis of COS. ► The catalyst CoNiAl-50 exhibited excellent COS conversion. ► Catalysts were characterized and possible mechanism of modification was proposed. ► The mechanism of catalyst deactivation was investigated.
Catalytic hydrolysis of COS over calcined CoNiAl hydrotalcite-like compounds modified by cerium
Abstract The catalytic performance of COS hydrolysis over calcined CoNiAl hydrotalcite-like compounds (HTLCs) modified by cerium was investigated. All catalysts were prepared by thermal decomposition of hydrotalcite-like precursors synthesized by co-precipitation method and characterized by various technologies. Among all catalysts studied, catalyst CoNiAl-50 exhibited excellent COS conversion. The changes of structural properties, oxidative properties of catalysts and increase of surface defect sites mainly accounted for the enhancements of the catalytic activities with addition of cerium. Element sulfur and the sulfate species accumulated on the surface which might contribute to catalyst poisoning and Ce could affect the formation and content of element sulfur and sulfate.
Graphical abstract Display Omitted Highlights ► CoNiAl hydrotalcite-derived mixed oxides modified with Ce were study. ► Cerium could be a potential active component for hydrolysis of COS. ► The catalyst CoNiAl-50 exhibited excellent COS conversion. ► Catalysts were characterized and possible mechanism of modification was proposed. ► The mechanism of catalyst deactivation was investigated.
Catalytic hydrolysis of COS over calcined CoNiAl hydrotalcite-like compounds modified by cerium
Wang, Hongyan (author) / Yi, Honghong (author) / Tang, Xiaolong (author) / Ning, Ping (author) / Yu, Lili (author) / He, Dan (author) / Zhao, Shunzheng (author) / Li, Kai (author)
Applied Clay Science ; 70 ; 8-13
2012-09-08
6 pages
Article (Journal)
Electronic Resource
English
Catalytic hydrolysis of COS over calcined CoNiAl hydrotalcite-like compounds modified by cerium
| Online Contents | 2012
Defluoridation of drinking water by Mg-Al hydrotalcite-like compounds and their calcined products
| Online Contents | 2007
Preparation of a hydrotalcite-like compound using calcined dolomite and polyaluminum chloride
| British Library Online Contents | 2007
Adsorption removal of thiocyanate from aqueous solution by calcined hydrotalcite
| Online Contents | 2006