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中文摘要：
利用热力学计算方法分析了铜基低温变换催化剂硫中毒的热力学可能性。根据非均相反应体系的热力学有关理论，计算了COS、CS2、H2S和SO2等4种含硫气体，在低温水汽变换温度条件下（423．15K-573．15K），导致铜基低温变换催化剂中毒可能发生的化学反应，并分析中毒产物。结果表明：在COS或H2S气氛下，中毒产物主要是Cu2S，其次是CuS而在CS2或SO2气氛下，除了Cu2S和CuS外，还可生成CuC03、CuSO4。由热力学计算可知，这4种含硫气体对铜基低温变换催化剂的毒害作用由强至弱的顺序为CS2〉SO2〉COS〉H2S。
英文摘要：
Thermodynamics of poisoning on copper-based catalyst for low temperature water-shift reaction with sulfurous gases were calculated according to thermodynamic calculation methods. In the condition of low temperature water-shift reaction （423.15 K-573.15 K）, the possible chemical reactions and products in the process of the copper-based catalyst poisoned by COS, CSz, H：S and SO2 were analyzed by the thermodynamics of heterogeneous reactions. The results show that the most easily products are Cu2S and CuS followed with COS and H2S participating in poisoning reactions. While CS2 and SO2 participated in poisoning reactions, the products are more complex, which CuCO3 and CuSO4 are generated at the same time. Based on the thermodynamic analysis, the toxicities for the low temperature water-gas shift catalyst are in the order of： CS2〉SO2〉COS〉H2S.
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