Abstract
The catalytic partial oxidation of methane to syngas over perovskite SrTiO 3 was studied with Ce 0.8 Sm 0.2 O 2− δ −La 0.8 Sr 0.2 CrO 3− δ dual-phase composite membrane reactor. The catalytic performance strongly depends on both reaction temperature and CH 4 feed rate. Approximately 74% CO and 75% H 2 selectivity at 17% CH 4 conversion can be achieved under the optimized membrane reactor operating conditions at 950 °C and CH 4 feed rate of 20 ml min −1 . The reaction routes were explored by a comparative study with conventional fixed-bed reactor, suggesting a direct CH 4 partial oxidation route below 750 °C and obvious CO 2 and steam reforming activities above 800 °C.
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