TY - JOUR
T1 - Soot oxidation activity of Ag/HZSM-5 (Si/Al=40) catalyst
AU - Ruan, Hongcheng
AU - Nishibori, Maiko
AU - Uchiyama, Tomoki
AU - Kamitani, Kazutaka
AU - Shimanoe, Kengo
N1 - Funding Information:
We would like to thank Prof. K. Watanabe and Dr. K. Suematsu for useful comments and discussions. We acknowledge Late Prof. Y. Teraoka for all of comments and supports. The XAS measurements were performed at Kyushu University Beam Line (KUBL) of Kyushu Synchrotron Light Research Center (SAGA-LS) and BL14B2 at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2016B1591). This work was partially supported by the Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
Publisher Copyright:
© 2017, Novel Carbon Resource Sciences. All rights reserved.
PY - 2017/9
Y1 - 2017/9
N2 - Ag/HZSM-5 with Si/Al ratio of 40 was synthesized by the impregnation method. The catalyst materials were characterized by the X-ray diffraction and X-ray absorption spectroscopy by Ag-L3 edge and Ag-K edge. Three different chemical states of Ag (ZO-Ag+, O-Ag+ and metallic Ag, here Z represents Si or Al) in the catalyst. The soot oxidation performance was evaluated by the TG-DTA measurement and showed two combustion stages in tight contact mode which indicates the intrinsic soot oxidation activity. This is because that a lot of Ag ion-exchanged with H ions and existed in the pores of HZSM-5 as ZO-Ag+, which cannot work for soot oxidation. Additionally, this catalyst has a high thermal stability even after high temperature program at 800 °C.
AB - Ag/HZSM-5 with Si/Al ratio of 40 was synthesized by the impregnation method. The catalyst materials were characterized by the X-ray diffraction and X-ray absorption spectroscopy by Ag-L3 edge and Ag-K edge. Three different chemical states of Ag (ZO-Ag+, O-Ag+ and metallic Ag, here Z represents Si or Al) in the catalyst. The soot oxidation performance was evaluated by the TG-DTA measurement and showed two combustion stages in tight contact mode which indicates the intrinsic soot oxidation activity. This is because that a lot of Ag ion-exchanged with H ions and existed in the pores of HZSM-5 as ZO-Ag+, which cannot work for soot oxidation. Additionally, this catalyst has a high thermal stability even after high temperature program at 800 °C.
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U2 - 10.5109/1928668
DO - 10.5109/1928668
M3 - Article
AN - SCOPUS:85034668267
VL - 4
SP - 7
EP - 11
JO - Evergreen
JF - Evergreen
SN - 2189-0420
IS - 2-3
ER -