Selective catalytic reduction of NO by C3H6 over Co/Al2O3 catalyst with extremely low cobalt loading

• Published in: Catalysis letters Vol. 78; no. 1-4; pp. 319 - 323
• Main Authors: HORIUCHI, Tatsuro, FUJIWARA, Takamichi, LAIYUAN CHEN, SUZUKI, Kenzi, MORI, Toshiaki
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 01.03.2002; Springer Nature B.V
• Subjects: Aluminum oxide; Catalysis; Catalysts; Catalytic reactions; Chemistry; Cobalt; Cobalt aluminate; Cobalt oxides; Exact sciences and technology; General and physical chemistry; Selective catalytic reduction; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Oxygen; Catalytic reaction; Hydrocarbon; Catalyst selectivity; Transition metal; Experimental study; Cobalt; Supported catalyst; Chemical reduction; Heterogeneous catalysis; Aluminium Oxides; Propene; Nitric oxide; Preparation; Ethylenic compound
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1023/A:1014952400564

In order to reveal the optimum Co loading, the selective catalytic reduction of NO with C3H6 over Co/Al2O3 catalyst was studied in a systematic fashion by varying the amount of cobalt oxide. It was found that upon loading a small amount of cobalt oxide (namely 0.5 wt% on a Co metal basis), the combination between Co(II) acetate salt and a high-purity alumina provided an active catalyst in the presence of excess oxygen and water. TPR measurement showed the presence of Co species other than CoAl2O4 spinel in the most excellent performance catalyst, from which the active sites should be produced.