Abstract

AbstractMechanistic aspects of selective reduction of N2O by C1–C3 alkanes resulting in N2, olefins, and hydrogen over CaO‐based catalysts were studied by combining catalytic tests at ambient pressure with transient analysis of products in high vacuum with microsecond time resolution. In the frame of this reaction, oxygen species formed from N2O participate in selective (olefin production) and nonselective (COx formation) heterogeneous interactions. The coverage by these species and the interplay of exothermic heterogeneous (N2O decomposition and oxidative alkane conversions) and endothermic homogeneous (thermal nonoxidative dehydrogenation and cracking of hydrocarbons) reaction pathways determine the overall olefin selectivity.

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