| 烷基化催化剂Y型沸石固体酸的扩散性能和酸性中心 |
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| 引用本文： | 柏子龙,富燕红,陈绍洲,常可怡,胡祖韶.烷基化催化剂Y型沸石固体酸的扩散性能和酸性中心[J].华东理工大学学报(自然科学版),1993(6). |
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| 作者姓名： | 柏子龙 富燕红 陈绍洲 常可怡 胡祖韶 |
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| 作者单位： | 华东化工学院石油加工研究所
(柏子龙，富燕红，陈绍洲，常可怡)，华东化工学院石油加工研究所(胡祖韶) |
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| 摘 要： | 用IR和TPD方法,研究了长链烯烃与芳烃的烷基化反应的Y型沸石催化剂的酸性对反应的作用。研究表明具有中等强度以上的酸性中心都对反应有贡献。长链烯烃在催化剂上的吸附比苯要强得多。长链烯烃在催化剂上除了吸附活化与苯反应之外,还有生焦的倾向。催化剂上的焦碳积累引起微孔堵塞,反应活性下降,可以从孔分布变化和扩散性能下降中得到解释。
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| 关 键 词： | 沸石 催化剂 烷基化 酸性中心 扩散 苯 长链烯烃 |
Studies on Acid Sites and Diffusion Properties of Zeolite Y Catalysts for Alkylation of Aromatics with Long-Chain Alkenes |
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| Bai Zilong,Fu Yanhong,Chen Shaozhou,Chang Keyi and Hu Zhushao.Studies on Acid Sites and Diffusion Properties of Zeolite Y Catalysts for Alkylation of Aromatics with Long-Chain Alkenes[J].Journal of East China University of Science and Technology,1993(6). |
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| Authors: | Bai Zilong Fu Yanhong Chen Shaozhou Chang Keyi and Hu Zhushao |
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| Institution: | Petroleum Processing Research Center |
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| Abstract: | The acid sites of zeolite Y catalysts for alkylation of aromatics with long-chain alkenes are determined with IR and TPD. It is proved that not only very strong acid sites, but also medium strong acid sites play an important role in the reaction. Long-chain alkene is adsorbed on the surface of catalysts much more strongly than benzene is adsorbed. Long-chain alkene is activated by catalysts and react with benzene. Coking of catalysts causedby alkene is the main causative factor of deactivation of catalysts. It is supported by the results of pore structure analysis and diffusion properties. |
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| Keywords: | zeolite catalyst alkylation acid sites diffusion benzene long-chain alkene |
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