【摘要】 常温常压下 ,利用脉冲电晕等离子体与 Ni/γ-Al2 O3 催化剂协同作用 CO2 加氢转化生成甲烷 ,考察了催化剂担载量、放电参数、工艺参数等对反应的影响 ,并探讨了其反应机理 .结果表明 ,在等离子体与催化剂协同作用下 ,CO2 加氢生成 CH4 ,CO2 转化率在催化剂一定担载量范围内随担载量的增加而增加 ;脉冲电压峰值、重复频率、进气方式、空速等对反应有重要影响 ;相同条件下 ,等离子体 -催化法优于化学催化法更多还原

【Abstract】 At atmospheric pressure and ambient temperature, converting CO 2/H 2 into CH 4 under synergism pulse corona plasma with catalyst was studied for the first time. A new route of CO 2 activation was opened up in the comprehensive utilization of carbon resources. Effect of catalyst loading on conversion of CO 2, the parameters of plasma discharge and the process parameters were studied. Additionally, the mechanism of activation and transformation of CO 2 under discharge plasma was discussed. Experimental results showed that CO 2/H 2 were converted into CH 4, the conversion of CO 2 was increased with increasing catalyst loading. The peak value of pulse voltage, discharge frequency, discharge polarity, the way of gas input and space velocity were important to conversion of CO 2. Under the same conditions, Plasma catalysis are better than conventional catalysis and plasma methods.更多还原