摘要
选取1-丁基-3-甲基咪唑氯化物为离子液体助剂制备钌基催化剂,并对其进行小试、模式和工业侧线的乙炔氢氯化反应催化性能评价,采用BET、ICP、TG、UV-Vis等多种表征手段分析钌催化剂失活原因。结果表明,离子液体的添加能够显著降低催化剂的表观活化能,提高催化剂活性,其中离子液体负载量为质量分数5%时,催化剂性能最佳,在小试以及模式中表现出优异的活性和稳定性。工业侧线运行时,催化剂初期活性优异,但随着反应温度的提高,催化剂失活加快。分析催化剂失活原因主要是离子液体助剂携带活性组分流失,催化剂表面积炭及活性组分被还原,其中助剂及活性组分的流失占主导地位。
1-butyl-3-methylimidazole chloride was selected as an ionic liquid promoter to prepare ruthenium based catalysts,and small-scale,mode,and industrial side line catalytic performance was evaluated for acetylene hydrochlorination reaction.Combining multiple characterization methods such as BET,ICP,TG and UV-Vis,the reasons for the deactivation of ruthenium catalysts were analyzed.The results show that the addition of ionic liquids can significantly reduce the apparent activation energy of the catalyst and improve its activity,and the best catalytic performance was obtained for the catalyst with ionic liquid loading of 5%(mass fraction)which exhibited excellent activity and stability in small-scale experiments and modes.During industrial side line operation,the catalyst has excellent initial activity,but as the reaction temperature increases,the catalyst deactivation accelerates.There are three main reasons for catalyst deactivation including the loss of active components carried by the catalyst promoter,the carbon deposit on the catalyst surface,and the reduction of active components of the catalyst.The loss of additives and active components dominates.
作者
牛强
代元元
Niu Qiang;Dai Yuanyuan(Erdos Electric Power and Metallurgy Group Co.,Ltd.,Ordos 016064,Inner Mongolia,China)
出处
《工业催化》
CAS
2024年第1期75-80,共6页
Industrial Catalysis
基金
“科技兴蒙”行动重点专项项目(2021EEDSCXSFQZD006)
内蒙古自治区科技计划项目(2021GG0350)。
关键词
有机化学工程
乙炔氢氯化
离子液体
钌基催化剂
失活
organic chemical engineering
acetylene hydrochlorination
ionic liquids
ruthenium-based catalyst
deactivation
