Study on the hydrogenation coupling of methane

At atmospheric pressure and ambient temperature, the hydrogenation coupling of methane was studied by using pulse corona plasma and its synergism with catalyst. The results showed that (i) under pulse corona plasma, the coupling of methane could be fulfilled by the addition of hydrogen, and with the increase of the amount of hydrogen, the conversion of methane and the yield of C2 hydrocarbon increased, and the deposit of carbon decreased; (ii) the conversion of methane was affected by pulse voltage and repeated frequency; (iii) in the system, the addition of Ni/y-AI203 could improve the distribution of C2 hydrocarbon; (iv) the activity of Ni/y-AI2O3 prepared by cold plasma was better than that by chemical methods. The experiment opened up a new technical route of the coupling of methane.     

环状磷酸催化合成二吲哚甲烷衍生物

在环状磷酸催化下,通过吲哚和醛酮的亲电取代反应,室温下合成了一系列二吲哚甲烷衍生物.考察了催化剂结构、用量和溶剂等因素对反应的影响,确定了最优反应条件,提出了可能的反应机理.该方法具有操作简单、条件温和、催化剂用量少、产率高及环境友好等优点.     

等离子体-催化剂耦合作用下CO2的甲烷化研究

常温常压下,利用脉冲电晕等离子体与Ni/γ-Al₂O₃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.