Harnessing Strong Metal-Support Interaction to Proliferate the Dry Reforming of Methane Performance by In Situ Reduction.

Autor:	Jeon OS; Department of Chemical and Bio-Molecular Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea.; Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270, Republic of Korea., Lee H; Department of Chemical and Bio-Molecular Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea., Lee KS; Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea., Paidi VK; Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea., Ji Y; Department of Chemical and Bio-Molecular Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea.; Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea., Kwon OC; Department of Chemical and Bio-Molecular Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea., Kim JP; Department of Chemical and Bio-Molecular Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea., Myung JH; Department of Materials Science and Engineering, Incheon National University, Incheon 22012, Republic of Korea., Park SY; Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270, Republic of Korea., Yoo YJ; Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270, Republic of Korea., Lee JG; Advanced Energy Materials and Components R&D Group, Dongnam Division, Korea Institute of Industrial Technology, 33-1, Jungang-ro, Yangsan, Gyeongsangnam-do 50623, Republic of Korea., Lee SY; Department of Chemical and Bio-Molecular Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea., Shul YG; Department of Chemical and Bio-Molecular Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea.
Jazyk:	angličtina
Zdroj:	ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2022 Mar 16; Vol. 14 (10), pp. 12140-12148. Date of Electronic Publication: 2022 Mar 03.
DOI:	10.1021/acsami.1c20889
Abstrakt:	The strong bonding at the interface between the metal and the support, which can inhibit the undesirable aggregation of metal nanoparticles and carbon deposition from reforming of hydrocarbon, is well known as the classical strong metal-support interaction (SMSI). SMSI of nanocatalysts was significantly affected by heat treatment and reducing conditions during catalyst preparation.the heat treatment and reduction conditions during catalyst preparation. SMSI can be weakened by the decrement of metal-doped sites in the supporting oxide and can often deactivate catalysts by the encapsulation of active sites through these processes. To retain SMSI near the active sites and to enhance the catalytic activity of the nanocatalyst, it is essential to increase the number of surficial metal-doped sites between nanometal and the support. Herein, we propose a mild reduction process using dry methane (CH 4 /CO 2 ) gas that suppresses the aggregation of nanoparticles and increases the exposed interface between the metal and support, Ni and cerium oxide. The effects of mild reduction on the chemical state of Ni-cerium oxide nanocatalysts were specifically investigated in this study. As a result, mild reduction led to form large amounts of the Ni 3+ phase at the catalyst surface of which SMSI was significantly enhanced. It can be easily fabricated while the dry reforming of methane (DRM) reaction is on stream. The superior performance of the catalyst achieved a considerably high CH 4 conversion rate of approximately 60% and stable operation up to 550 h at a low temperature, 600 °C.
Databáze:	MEDLINE
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