Plasma-Catalytic CO₂ Reforming of Toluene over Hydrotalcite-Derived NiFe/(Mg, Al)O _x Catalysts.

Content Provider	Europe PMC
Author	Liu, Lina Dai, Jing Das, Sonali Wang, Yaolin Yu, Han Xi, Shibo Zhang, Zhikun Tu, Xin
Copyright Year	2023
Abstract	The removal of tarand CO2 in syngas frombiomass gasificationis crucial for the upgrading and utilization of syngas. CO2 reforming of tar (CRT) is a potential solution which simultaneouslyconverts the undesirable tar and CO2 to syngas. In thisstudy, a hybrid dielectric barrier discharge (DBD) plasma-catalyticsystem was developed for the CO2 reforming of toluene,a model tar compound, at a low temperature (∼200 °C) andambient pressure. Periclase-phase (Mg, Al)Ox nanosheet-supported NiFe alloy catalysts with various Ni/Feratios were synthesized from ultrathin Ni–Fe–Mg–Alhydrotalcite precursors and employed in the plasma-catalytic CRT reaction.The result demonstrated that the plasma-catalytic system is promisingin promoting the low-temperature CRT reaction by generating synergybetween DBD plasma and the catalyst. Among the various catalysts,Ni4Fe1-R exhibited superior activity and stability because of itshighest specific surface area, which not only provided sufficientactive sites for the adsorption of reactants and intermediates butalso enhanced the electric field in the plasma. Furthermore, the strongerlattice distortion of Ni4Fe1-R provided more isolated O2– for CO2 adsorption, and having the most intensive interactionbetween Ni and Fe in Ni4Fe1-R restrained the catalyst deactivationinduced by the segregation of Fe from the alloy to form FeOx. Finally, in situ Fourier transform infrared spectroscopycombined with comprehensive catalyst characterization was used toelucidate the reaction mechanism of the plasma-catalytic CRT reactionand gain new insights into the plasma-catalyst interfacial effect.
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Journal	JACS Au
Volume Number	3
DOI	10.1021/jacsau.2c00603
PubMed Central reference number	PMC10052232
Issue Number	3
PubMed reference number	37006774
e-ISSN	26913704
Language	English
Publisher	American Chemical Society
Publisher Date	2023-02-17
Access Restriction	Open
Rights License	Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). © 2023 The Authors. Published by American Chemical Society
Subject Keyword	CO2 reforming of toluene syngas hydrotalcite-derived catalysts plasma catalysis in situ FTIR
Content Type	Text
Resource Type	Article
Subject	Chemistry Physical and Theoretical Chemistry Analytical Chemistry Organic Chemistry