TY - JOUR
T1 - Improvement of Catalytic Activity of Ce-MFI-Supported Pd Catalysts for Low-Temperature Methane Oxidation by Creation of Concerted Active Sites
AU - Osuga, Ryota
AU - Neya, Atsushi
AU - Yoshida, Motohiro
AU - Yabushita, Mizuho
AU - Yasuda, Shuhei
AU - Maki, Sachiko
AU - Kanie, Kiyoshi
AU - Yokoi, Toshiyuki
AU - Muramatsu, Atsushi
N1 - Funding Information:
This work was financially supported by the Core Research for Evolutional Science and Technology program of the Japan Science and Technology Agency (JST CREST, JPMJCR16P3), a Grant-in-Aid for Scientific Research (S) (KAKENHI, 21H05011), and a Grant-in-Aid for Early-Career Scientists (19K15355 and 21K14459) from the Japan Society for the Promotion of Science (JSPS). We appreciate Mr. Yuichiro Hayasaka (The Electron Microscopy Center, Tohoku University) for his invaluable assistance with STEM analyses. The authors thank Ms. Yuko Terui for her support on catalyst preparation.
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/7/13
Y1 - 2022/7/13
N2 - Ce-containing MFI-type zeolite (Ce-MFI)-supported Pd catalysts modified by a second metal were prepared and applied to low-temperature oxidative coupling of methane reactions. Screening of various second metal species revealed that the combination of Pd and Co supported on Ce-MFI positively affected the catalytic performance and that the C2H6yield was improved compared with that for the control Ce-MFI-supported Pd catalyst. This benefit would arise from the creation of new active sites by the proximate Pd and Co species on Ce-MFI, as suggested by high-angle angular dark-field scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and H2-temperature-programmed reduction measurements. In addition, the highly dispersed Ce species in Ce-MFI, which were generated via the mechanochemical method, contributed to the creation of catalytically active sites, i.e., concerted Ce, Pd, and Co species.
AB - Ce-containing MFI-type zeolite (Ce-MFI)-supported Pd catalysts modified by a second metal were prepared and applied to low-temperature oxidative coupling of methane reactions. Screening of various second metal species revealed that the combination of Pd and Co supported on Ce-MFI positively affected the catalytic performance and that the C2H6yield was improved compared with that for the control Ce-MFI-supported Pd catalyst. This benefit would arise from the creation of new active sites by the proximate Pd and Co species on Ce-MFI, as suggested by high-angle angular dark-field scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and H2-temperature-programmed reduction measurements. In addition, the highly dispersed Ce species in Ce-MFI, which were generated via the mechanochemical method, contributed to the creation of catalytically active sites, i.e., concerted Ce, Pd, and Co species.
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U2 - 10.1021/acs.iecr.2c01410
DO - 10.1021/acs.iecr.2c01410
M3 - Article
AN - SCOPUS:85134839261
SN - 0888-5885
VL - 61
SP - 9686
EP - 9694
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
IS - 27
ER -