Abstract
A new catalyst based on the K/Ca/Ni oxide system has been developed for the oxidative coupling of methane at <700°C. It is capable of up to 70% selectivity to C2+ hydrocarbons at complete O2 conversion (CH4/O2 ratio = 2.5) if 35% water is present in the feed. Unlike previous materials of this type, the present catalyst is stable at the conditions of its maximum yield to C2+ products and is not poisoned by CO2. On the contrary, it appears as if CO2 promotes formation of a selective hydroxycarbonate phase which develops under reaction conditions.
Original language | English |
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Pages (from-to) | 402-408 |
Number of pages | 7 |
Journal | Journal of Catalysis |
Volume | 145 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Jan 1994 |