氧泵型催化膜反应器中甲烷氧化偶联反应(Ⅱ)——动力学研究

OXIDATIVE COUPLING OF METHANE IN CATALYTIC MEMBRANE REACTOR WITH OXYGEN PUMPING TYPE(Ⅰ) REACTION KINETICS STUDY

在1％Sr/La_2O_3-Bi_2O_3-Ag-YSZ氧泵型催化膜反应器中,进行了甲烷氧化偶联反应动力学研究,提出了反应途径及机理,并建立了速率方程。结果表明,在该氧泵型催化膜反应器中,甲烷氧化偶联反应满足Rideal-Rdox机理。采用固体电解质电位测定技术进行了内扩散影响的考察。

The reaction kinetics of the oxidative coupling of methane (OCM) was studied in a 1% Sr/La2O3 -Bi2O3 -Ag -YSZ cataytic membrane reactor with oxygen pumping type. The reaction network for the OCM reaction was defined. The reaction mechanism was developed and the rate equations were determined. The results showed that the OCM reaction over the catalytic membrane with oxygen pumping type followed a Rideal - Redox mechanism. The technique of solid -electrolyte - potentiometry (SEP) was used to investigate the effect of internal diffusion.