ISSN:
1588-2837
Keywords:
Methane partial oxidation
;
pulse reaction
;
reaction mechanism
;
LiNiLaOx/Al2O3 catalyst
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Temperature-programmed reduction (TPR) characterization of the LiNiLaOx/Al2O3 catalyst before or after partial oxidation of methane (POM) reaction and a series of O2, CH4 and CH4/O2 pulse reaction experiments over the catalyst under different pretreatments were performed. It was found that CH4 dissociatively adsorbs on active center nickel producing H2 and surface carbon, C(a). The surface carbon reacts with surface lattice oxygen or surface adsorbed oxygen to produce CO. Because the activation barrier for the reaction C(a)+ O(a)=CO(a) is the highest among all the elementary reactions, the ratedetermining step of the POM may be the reaction C(a)+O(a)=CO(a).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02475801
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