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采用一套玻璃真空系统 ,对COS、H2 S、O2 各自的吸附行为进行了研究 ,通过红外谱图发现COS是解离吸附 ,由H2 S +O2 的共吸附与H2 S +O2 +COS的共吸附结果可以看出 ,只有H2 S与O2 共存时 ,才会导致催化剂的失活 ,且导致COS水解催化剂失活的主要原因是单质硫和微量的硫酸盐沉积于催化剂的表面 ,温度越高 ,失活越严重 ,红外光谱得出的结果与微反得出的结果一致 ,并提出了失活机理
A set of glass vacuum system was used to study the adsorption behavior of COS, H2S and O2 respectively. According to the infrared spectrum, COS was dissociated and adsorbed. The total adsorption of H2S + O2 and H2S + O2 + COS Adsorption results show that only the H2 S and O2 coexist, will lead to catalyst deactivation, and lead to COS hydrolysis catalyst deactivation is mainly due to elemental sulfur and traces of sulfate deposition on the catalyst surface, the higher the temperature, The more serious the deactivation, the result of infrared spectroscopy is consistent with the result of micro-inversion, and the inactivation mechanism