TY - JOUR
T1 - Effect of coating modification of cordierite carrier on catalytic performance of supported NiMnO3 catalysts for VOCs combustion
AU - Deng, Lei
AU - Huang, Chao
AU - Kan, Jiawei
AU - Li, Bing
AU - Chen, Yingwen
AU - Zhu, Shemin
AU - Shen, Shubao
N1 - Publisher Copyright:
© 2018
PY - 2018/3
Y1 - 2018/3
N2 - NiMnO3 perovskite catalysts supported on cordierite modified by CexZr1-xO2 coatings were prepared using impregnation and sol–gel methods for catalytic combustion of single/double component VOCs at different concentrations and GHSV of 15,000 h−1, which were characterized by BET, XRD, SEM, FT-IR, H2-TPR and O2-TPD. After coating modification, the specific surface area of catalysts is improved obviously. Among the catalysts, the Ce0.75Zr0.25O2 coating modified NiMnO3 catalyst exhibits the best catalytic activity for VOCs combustion with 95.6% conversion at 275 °C and has stable activity when catalyst is embalmed at 800 °C. In addition, the catalyst also presents the excellent water-resistant and conversion stability over time-on-stream condition. The reason is that Ce0.75Zr0.25O2 coating can promote more lattice distortion and defects and smaller crystal size, which improve oxygen transfer capability and dispersion of active component.
AB - NiMnO3 perovskite catalysts supported on cordierite modified by CexZr1-xO2 coatings were prepared using impregnation and sol–gel methods for catalytic combustion of single/double component VOCs at different concentrations and GHSV of 15,000 h−1, which were characterized by BET, XRD, SEM, FT-IR, H2-TPR and O2-TPD. After coating modification, the specific surface area of catalysts is improved obviously. Among the catalysts, the Ce0.75Zr0.25O2 coating modified NiMnO3 catalyst exhibits the best catalytic activity for VOCs combustion with 95.6% conversion at 275 °C and has stable activity when catalyst is embalmed at 800 °C. In addition, the catalyst also presents the excellent water-resistant and conversion stability over time-on-stream condition. The reason is that Ce0.75Zr0.25O2 coating can promote more lattice distortion and defects and smaller crystal size, which improve oxygen transfer capability and dispersion of active component.
KW - Catalytic combustion
KW - Coating modification
KW - NiMnO catalyst lattice distortion and defects
KW - Oxygen transfer capability
KW - VOCs
UR - http://www.scopus.com/inward/record.url?scp=85029149713&partnerID=8YFLogxK
U2 - 10.1016/j.jre.2017.07.015
DO - 10.1016/j.jre.2017.07.015
M3 - 文章
AN - SCOPUS:85029149713
SN - 1002-0721
VL - 36
SP - 265
EP - 272
JO - Journal of Rare Earths
JF - Journal of Rare Earths
IS - 3
ER -