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CuTi LDH derived NH 3 -SCR catalysts with highly dispersed CuO active phase and improved SO 2 resistance

Abstract:
Dispersed CuyTi1Ox catalysts derived from Cu-Ti-CO3 layered double hydroxides (LDHs) were successfully prepared. Due to the better dispersion of active CuO phase, the optimal catalyst Cu1Ti1Ox reached a high NOx conversion of 88.9% at 200 °C, which is significantly higher than that of the control catalyst 10 wt% CuO/TiO2 (29.5%). Cu1Ti1Ox catalyst also showed improved SO2 resistance, with a very stable NOx conversion of 76.4% at 200 °C after 8 h running with 50 ppm SO2, much higher than that of 10 wt% CuO/TiO2 (3.3%). The reaction mechanism was discussed with NH3-TPD and H2-TPR analyses, which indicated that Cu1Ti1Ox has more surface acidic sites and higher redox property than 10 wt% CuO/TiO2. In all, CuyTi1Ox prepared from Cu-Ti LDH precursor can work as highly efficient and SO2 resistant low-temperature NH3-SCR catalyst for NOx removal.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.catcom.2017.04.014

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Institution:
University of Oxford
Oxford college:
Balliol College
Role:
Author


Publisher:
Elsevier
Journal:
Catalysis Communications More from this journal
Volume:
97
Pages:
47-50
Publication date:
2017-04-07
Acceptance date:
2017-04-06
DOI:
EISSN:
1566-7367


Keywords:
Pubs id:
pubs:691384
UUID:
uuid:84212c94-10d2-4c4d-a9d6-7a2b0ab92a6b
Local pid:
pubs:691384
Source identifiers:
691384
Deposit date:
2017-08-23
ARK identifier:

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