石油炼制与化工
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桂兴华 韩玉春 孙兆林 宋丽娟
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摘要： 运用频率响应技术研究乙烯在氢型丝光沸石（HMor）上的吸附机理。在温度252K、压力27～200Pa下测定乙烯在HMor上的频率响应谱图，并据此计算每个吸附过程的动力学参数。研究结果表明，在27～200Pa压力范围内，乙烯在氢型丝光沸石上由高频吸附和低频吸附同时控制，高频吸附是乙烯的Π电子进入到H+的空轨道形成Π电子的吸附过程，低频吸附是乙烯与SiOH形成氢键的吸附过程。吸附过程以低频吸附为主，高频吸附比低频吸附对平衡压力更敏感。
关键词: 频率响应, 吸附, 乙烯, 沸石
Abstract: The frequency response (FR) technique was applied to study the adsorption mechanism of ethylene on H-mordenite. The FR spectra of ethylene adsorbed on H-mordenite were recorded at a pressure range of 27-200pa and a temperature of 252K. The dynamics parameters of each adsorption process were derived from the FR spectra. The results showed that the adsorptions of ethylene under said pressure range were controlled by two adsorption processes, i.e. low frequency adsorption and high frequency adsorption. Combining the information from FR spectra and adsorption isotherms, it can be seen that the low frequency adsorption was the main process and the high frequency adsorption process was more sensitive to equilibrium pressure.
Key words: Frequency response, adsorption, ethylene, zeolite
桂兴华 韩玉春 孙兆林 宋丽娟. 运用频率响应法研究乙烯在氢型丝光沸石上的吸附行为[J]. 石油炼制与化工, doi: .
. STUDY ON THE ADSORPTION BEHAVIOR OF ETHYLENE ON H-MORDENITE BY FREQUENCY RESPONSE TECHNIQUE[J]. Petroleum Processing and Petrochemicals, doi: .
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