Bo Long-li, Yang Li, Sun Jian-yu, Liang Xin-xin, Hu Xue-jiao, Meng Hai-long
Huan Jing Ke Xue. 2014 Sep;35(9):3302-8.
Catalytic oxidations of two-component volatile organic compounds (VOCs) toluene and chlorobenzene were investigated under microwave heating and tube furnace heating, respectively, and reaction kinetics were analyzed in this paper. The research indicated that competitive adsorption between toluene and chlorobenzene reduced their removal efficiencies by 3% -12% as compared to single component. 'Hot spot effect' and 'non-thermal effect' under microwave irradiation obviously enhanced conversion efficiencies of VOCs, especially, the chlorobenzene removal was increased by 31% -38%. Moreover, reaction temperature and energy consumption were both reduced under microwave heating. The dynamic calculations showed that microwave heating decreased the activation energies by 2 146 J. mol-1 and 1 450 J mol-1 for toluene and chlorobenzene, respectively, as compared with tube furnace heating. Meanwhile, microwave heating enhanced the reaction rate constants of chlorobenzene and toluene to about 35 times and 6 times of that of tube furnace heating.
分别在微波加热和管式炉加热条件下，研究了两组分挥发性有机化合物（VOCs）甲苯和氯苯的催化氧化，并分析了反应动力学。研究表明，与单一组分相比，甲苯和氯苯之间的竞争吸附使其去除效率降低了3% - 12%。微波辐射下的“热点效应”和“非热效应”明显提高了VOCs的转化效率，尤其是氯苯的去除率提高了31% - 38%。此外，微波加热降低了反应温度和能耗。动力学计算表明，与管式炉加热相比，微波加热使甲苯和氯苯的活化能分别降低了2146 J·mol-1和1450 J·mol-1。同时，微波加热使氯苯和甲苯的反应速率常数分别提高到管式炉加热的约35倍和6倍。
