化学吸附法在石油炼制与化工催化剂研究中的应用  

Application of Chemisorption Methods in the Research of Petroleum Refining and Chemical Catalysts

作　　者：赵文慧 袁蕙 卢立军 邱丽美 王卅 徐广通 ZHAO Wenhui;YUAN Hui;LU Lijun;QIU Limei;WANG Sa;XU Guangtong(SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083,China)

机构地区：[1]中石化石油化工科学研究院有限公司,北京100083

出　　处：《石油学报（石油加工）》2024年第5期1409-1419,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：中国石油化工股份有限公司项目(ST22023)基金资助。

摘　　要：化学吸附法是一类重要的物化表征手段,在催化剂表征中应用广泛。通过改变探针分子和检测方式,化学吸附法能够提供包括但不限于催化剂表面酸性中心种类和数量、催化剂中金属氧化物物种信息、多组分金属氧化物及金属氧化物与载体之间相互作用、负载型催化剂金属分散度等信息。介绍了氨气程序升温脱附(NH_(3)-TPD)、H_(2)程序升温还原(H_(2)-TPR)、静态化学吸附法、CO脉冲吸附、氢氧滴定法等化学吸附方法的测试原理,总结对比了各方法的优缺点及适用范围,详述了这些方法在表征石油炼制与化工催化剂性质方面的应用案例,最后对方法的优化和未来发展方向进行了展望,以期为更先进的化学吸附方法的开发与其在石油炼制与化工催化剂性质表征方面的应用提供思路。As an important method for characterization of physico-chemical properties,chemisorption method has been widely applied in characterizing catalysts.By changing the probing molecules and detection pathways,chemisorption provides information including the number of acidic sites on the surface of catalysts,species of metal oxide,the interaction between multicomponent metal oxides as well as metal oxides and the support,and the degree of metal dispersity in metal supported catalysts.This review introduces the chemisorption methods including ammonia temperature programmed desorption(NH_(3)-TPD),H_(2)temperature programmed reduction(H_(2)-TPR),static chemisorption,CO pulse adsorption,and oxyhydrogen titration.The underlying principles,advantages,disadvantages,and application range of each method have been illustrated.Then the applications in the characterization of catalysts for petroleum refining and chemical industry are elaborated.Finally,the prospects for the optimization of the methods and their future applications are proposed,aiming to provide insights for the development of advanced chemisorption methods and their applications in petroleum refining and property characterization of chemical catalysts.

关 键 词：化学吸附 NH3-TPD H2-TPR 金属分散度 CO脉冲吸附法 氢氧滴定法 

分 类 号：O657.99[理学—分析化学]