乙酰丙酮配体对SnCl_(2)/AC催化乙炔氢氯化反应的影响  

Effects of Acetylacetone Ligand on Catalytic Performance of SnCl_(2)/AC in Acetylene Hydrochlorination

作　　者：周维 张健[1] 乔文强 孙玺[2] 秦玉才[1] 宋丽娟[1] Zhou Wei;Zhang Jian;Qiao Wenqiang;Sun Xi;Qin Yucai;Song Lijuan(Key Laboratory of Petrochemical Catalytic Science of Liaoning Province,Liaoning Petrochemical University,Fushun Liaoning 113001,China;College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou Gansu 730000,China)

机构地区：[1]辽宁石油化工大学辽宁省石油化工催化科学与技术重点实验室,辽宁抚顺113001 [2]兰州大学化学与化工学院,甘肃兰州730000

出　　处：《石油化工高等学校学报》2022年第2期37-42,共6页Journal of Petrochemical Universities

基　　金：国家自然科学基金资助项目(No.U1662135,213761114)。

摘　　要：负载型SnCl_(2)是一种无汞乙炔氢氯化催化剂,为了增强SnCl_(2)催化剂的乙炔氢氯化反应性能,通过引入乙酰丙酮配体(acetylacetone)制备了5.0%Sn(acac)_(2)Cl_(2)/AC催化剂,并对催化剂的物化性能进行了分析。结果表明,在乙炔体积空速为90 h^(-1)、乙炔与HCl物质的量比为1∶1.1、反应温度为170℃的条件下,5.0%Sn(acac)_(2)Cl_(2)/AC催化剂的乙炔转化率达到96%,高于5.0%SnCl_(2)/AC催化剂的乙炔转化率;结合反应前后催化剂的性能表征,证实引入乙酰丙酮配体可增强SnCl_(2)催化剂的乙炔吸附能力,同时还可起到抑制反应过程中锡流失的作用,有效地提高了SnCl_(2)催化剂的反应活性和稳定性。Supported SnCl_(2) is a mercury-ree catalyst for acetylene hydrochlorination.5.0%Sn(acac)_(2)Cl_(2)/AC catalyst was prepared by introducing acetylacetone ligand to enhance the catalytic performance of SnCl_(2) in acetylene hydrochlorination.The results show that the acetylene conversion of 5.0%Sn(acac)_(2)Cl_(2)/AC catalyst is up to 96% under the conditions of acetylene-to-hydrogen chloride molar ratio of 1∶1.1,170℃and GHSV(C_(2)H_(2))of 90 h^(−1),which is higher than that of the 5.0%SnCl_(2)/AC catalyst.The physical and chemical properties of the catalysts before and after the reaction also proved that the introduction of acetylacetone ligand can enhance the acetylene adsorption capacity of the SnCl_(2) catalyst and inhibit Sn loss during the reaction.Therefore,the activity and stability of the SnCl_(2) catalyst were effectively improved.

关 键 词：氢氯化反应 SnCl_(2)/AC催化剂 乙酰丙酮配体 活性 稳定性 

分 类 号：TQ032.4[化学工程]