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Effect of Catalyst Deactivation on Kinetics of Plasma‐Catalysis for Methanol Decomposition
Author(s) -
Lee Dae Hoon,
Kim Taegyu
Publication year - 2014
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201300185
Subject(s) - catalysis , methanol , dielectric barrier discharge , decomposition , chemistry , kinetics , nonthermal plasma , chemical engineering , plasma , catalyst poisoning , inorganic chemistry , photochemistry , catalyst support , organic chemistry , electrode , physics , quantum mechanics , engineering
The effect of catalyst deactivation in the plasma catalysis of methanol decomposition is investigated. A dielectric barrier discharge is generated in the Cu/ZnO/γ‐Al 2 O 3 catalyst‐packed bed reactor. Methanol conversion and generation of CO/CO 2 and HC species using the fresh and deactivated catalyst are compared. Catalyst deactivation usually causes a reduction in the synergetic effect of the plasma and catalyst, mainly as a result of changes in the relative generation of primary radicals by the plasma and subsequent interactions between the catalyst‐adsorbed and plasma‐generated species. The results show that deactivation and changes in catalyst characteristics, as well as active control of the plasma generation technique, can be the controlling parameters in the kinetics of plasma–catalyst reactions.