等离子体-催化剂体系下甲苯加氢反应Toluene Hydrogenation in the Presence of Plasma and Catalyst
王赢权,于欣,周彩荣
摘要(Abstract):
探索了等离子体介质阻挡放电甲苯加氢工艺的行为。反应产物的气相色谱分析结果表明甲基环己烷为主产物。单因素实验法考察不同因素对甲苯加氢反应行为的影响,初步推测等离子体环境下甲苯加氢反应包含三种机理:加成反应、取代反应、C-C键断裂反应。研究发现,通过增大放电功率和催化剂(Ni/SiO2)协同作用,可使甲基环己烷转化率趋于最佳值。在反应条件为:"一段式"催化剂装填方式,0.30 g催化剂固载于0.1 g玻璃纤维上,催化剂活性金属组分含量17%(wt);放电电压8.4 k V;电极直径50 mm;气体配比(VH2/VC7H8)31;停留时间21 s,其甲苯转化率可达78.4%,甲基环己烷选择性72.2%。
关键词(KeyWords): 等离子体;甲苯加氢;介质阻挡放电;甲基环己烷
基金项目(Foundation): 河南省科技攻关资助项目(092102210177)
作者(Author): 王赢权,于欣,周彩荣
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