选用稀土La2O3催化剂对CO进行了催化还原脱硫反应. 考察了在脉冲放电等离子体协同催化作用下,催化剂组成随反应温度和放电电压的变化规律以及其与常规催化作用下的不同之处. 结果表明,反应温度较低(《377 ℃)时,脉冲放电等离子体对催化剂组成的影响作用明显; 反应温度较高(》377 ℃)时,脉冲放电等离子体仅影响催化剂各组分的含量. LaOOH的生成是La2O3催化剂活性组分生成的关键步骤,并受温度的影响较大; 存在一最佳放电电压效应.
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