Journal
CHINESE JOURNAL OF CATALYSIS
Volume 35, Issue 7, Pages 1030-1035Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(14)60035-8
Keywords
Titanosilicate; Copper; Nitrogen oxide; Ammonia; Selective catalytic reduction
Funding
- National Natural Science Foundation of China [21277009]
- Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality [PHR201107104]
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Ion exchange method was used to fabricate Cu-ETS-10 titanosilicate catalysts, which possessed high activity, N-2 selectivity and SO2 resistance for NOx selective catalytic reduction (SCR). N-2 sorption measurements indicated that the microporous catalysts had high surface areas of 288-380 m(2)/g. The Cu content and speciation were investigated by inductively coupled plasma atomic emission spectrometry, H-2 temperature-programmed reduction, and diffuse reflectance infrared Fourier transform spectroscopy. Various Cu species coexisted within the catalyst. Isolated Cu2+ species were the active sites for NH3-SCR, the number of which initially increased and then decreased with increasing Cu content. The catalytic activity of Cu-ETS-10 depended on the isolated Cu2+ species content. (C) 2014, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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