吸附饱和苯乙烯等含有碳碳双键反应性VOCs的活性炭热脱附时，在高温下易形成大分子聚合物堵塞活性炭孔道、降低活性炭吸附性能。针对此问题，尝试采用浸渍法将无机阻聚剂负载于活性炭上进行改性，系统研究了无机阻聚剂种类、浓度和脱附温度对苯乙烯吸脱附及再生性能的影响，并借助气体吸附法、X射线光电子能谱仪、扫描电镜等方法对阻聚机制进行了深入研究。结果表明：0.05 mol/L的FeCl₃作为阻聚剂通过浸渍负载于柱状活性炭，在脱附温度为100 ℃时脱附效果最好；通过浸渍法可以实现FeCl₃在活性炭中的有效负载，并在高温下猝灭自由基，一定程度上抑制了苯乙烯的聚合。该方法或能有效缓解活性炭吸附净化反应性VOCs时脱附再生难的问题。

When activated carbons containing carbon-carbon double bond reactive VOCs such as saturated styrene are thermally desorbed, it is easy to form macromolecular polymers at high temperatures to block the pores of activated carbon and reduce the adsorption performance of activated carbon. This study therefore proposes to use the impregnation method to load the inorganic inhibitor on the activated carbon for modification. Specifically, we investigated the effect of inorganic polymerization inhibitor type, concentration and desorption temperature on the adsorption, desorption and regeneration properties of styrene and probed into the inhibition mechanism via gas adsorption method, X-ray photoelectron spectroscopy and scanning electron microscopy. Results show that when 0.05 mol/L FeCl₃ was loaded as an inhibitor on the columnar activated carbon by impregnation, the activated carbon demonstrated maximum desorption effect at 100 ℃. The impregnation method enabled FeCl₃ to be effectively loaded on activated carbon, the free radicals quenched at high temperature and the polymerization of styrene was inhibited to some extent. This method may effectively alleviate the difficulty of desorption and regeneration when activated carbon adsorbs and purifies reactive VOCs.