摘要
为提高大气压下微波等离子体分解CF4过程的能量效率,降低副产物NOx的生成,采用微波等离子体后端添加Ag/Al2O3催化剂的方法,研究了微波等离子体与催化剂协同作用对CF4去除率的影响,考察了催化剂载体中银负载量对副产物NOx生成的抑制效果.结果表明,微波等离子体与Ag/Al2O3对CF4去除协同作用明显,CF4最高去除率达到95.8%.等离子体与催化剂的协同作用使CF4去除效率提高了32.7%,与单独等离子体作用相比,能量利用效率提高58.1%.催化剂中负载Ag量对副产物NOx的体积分数有明显影响,当Ag的负载量为Al2O3质量的2%时,NOx产生量减少了90%.
To improve the atmospheric-pressure microwave plasma decomposition of energy efficiency CF4 process and reduce by-products NOx generation,the removal efficiency of CF4 by atmospheric-pressure microwave plasma and Ag/Al2O3 catalyst synergy was investigated,and the inhibition of by-products NOx generation by the loading Ag in the catalyst was also studied.The results indicated that the DRE（destruction and removal efficiencies） of CF4 was obvious influenced by microwave plasma and Ag/Al2O3 catalyst synergy.The highest DRE of CF4 was up to 95.8%.Compared with catalyst alone,the DRE of CF4 was enhanced about 32.7%,and compared with plasma alone,the energy efficiency for CF4 was enhanced about 58.1%.Concentration of NOx was obvious influenced by the loading Ag in the catalyst.Production of NOx was decreased 90% with 2%（mass fraction） Ag /Al2O3.
出处
《河北大学学报（自然科学版）》
CAS
北大核心
2010年第5期525-529,共5页
Journal of Hebei University(Natural Science Edition)
基金
国家自然科学基金资助项目(1087501941005079)
格平绿色助学行动--辽宁环境科研教育‘123工程’资助项目
国家海洋局重点实验室开放基金资助项目(200919)
中央高校基本科研业务费专项资金资助项目(2009QN060)
