循环－吸附分离反应工艺对提高甲烷氧化偶联反应C_2收率的作用

在循环－吸附分离反应器中对甲烷氧化偶联制Ｃ２烃类反应进行了研究，并考察了循环比、ＣＨ４／Ｏ２比、甲烷空速等因素的影响。研究发现，利用循环－吸附分离反应工艺，可同时提高ＯＣＭ反应的ＣＨ４转化率和Ｃ２选择性，解决Ｃ２收率低的问题。在掺杂的ＣａＴｉＯ３催化剂体系上，通过循环－吸附分离反应，ＣＨ４转化率、Ｃ２选择性和收率分别高达６４．３％、８５．４％和５５％。

Remarkable improvement in C_2 yield for the OCM reaction in a recycle-adsorption separation system

Oxidation coupling of methane(OCM) reaction has been investigated in a recycle-adsorption separation system. The effects of operational factors such as recycle ratio, CH4/O2 ratio and CH4 space velocity on the reaction have also been studied. It was found that by using this process both C2 selectivities and CH4 conversions were improved simultaneously for OCM reaction, thus solving the problem of lower C2 yield. Over the doped CaTiO3 catalyst, CH4 conversion, C2 selectivity and yield were improved to 64. 3%, 85. 4r8 and 55% separately.