| 芳烃在F C C催化剂上的吸附扩散行为 |
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| 引用本文： | 朱萌萌,郑兰歌,秦玉才.芳烃在F C C催化剂上的吸附扩散行为[J].石油化工高等学校学报,2015,28(3):7. |
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| 作者姓名： | 朱萌萌 郑兰歌 秦玉才 |
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| 作者单位： |
( 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1 1 3 0 0 1) |
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| 基金项目： | 国家自然科学基金项目( 2 1 0 7 6 1 0 0, 2 1 3 7 6 1 1 4) ; 中国石油天然气股份有限公司炼油催化剂重大专项( 1 0 - 0 1 A - 0 1 - 0 1 -
0 1) 。 |
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| 摘 要： | 利用智能重量分析仪( I GA) 和程序升温脱附技术( T P D) 研究芳烃( 苯、 对二甲苯及异丙苯) 在流化催
化裂化( F C C) 催化剂及稀土超稳 Y型分子筛上的吸附扩散行为。TG / DTG曲线表明, 芳烃在F C C催化剂及稀土超
稳Y型分子筛上只存在一种吸附模式, 推测这种吸附模式是芳烃与吸附剂之间通过π电子相互作用。另外, F C C催
化剂颗粒中, 整个传质过程中的速控步骤不是 Y型分子筛晶粒内微孔孔道中的扩散过程, 而是催化剂基质中长程的
大/介孔内的扩散过程及分子筛微孔与基质界面之间的分子交换过程。
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| 关 键 词： | ,F,C,C催化剂,,稀土超稳,Y型分子筛,,吸附,,扩散,,芳烃, |
| 收稿时间： | 2014-12-28 |
Adsorption and Diffusion of Aromatic Hydrocarbons on FCC Catalysts |
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| Zhu Mengmeng,Zheng Lan’ge,Qin Yucai,et al.Adsorption and Diffusion of Aromatic Hydrocarbons on FCC Catalysts[J].Journal of Petrochemical Universities,2015,28(3):7. |
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| Authors: | Zhu Mengmeng Zheng Lan’ge Qin Yucai |
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| Affiliation: | (Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Province,
Liaoning ShiHua University, Fushun Liaoning 113001, China) |
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| Abstract: | Adsorption and diffusion behavior of aromatic hydrocarbons (benzene, p xylene and cumene) on Fluid Catalytic Cracking (FCC) catalysts and multi sites of components REUSY zeolite have been systematically investigated by N2 adsorption, Intelligent Gravimetric Analyser (IGA) and Temperature Programmed Desorption (TPD) technology. Only one adsorption model for aromatic hydrocarbons in FCC catalysts and REUSY zeolite was observed in TG/DTG profiles, speculating that the adsorption mode was π electron interactions between aromatic and adsorbent. The controlling steps for the overall mass transfer process in the FCC catalyst particles are the diffusion process in the length scale of macropore of the matrix or/and the mass transfer at the zeolite matrix interface rather than the intracrystalline diffusion one in the micropores of the zeolite crystals. |
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| Keywords: | Fluid catalytic cracking catalyst REUSY zeolite Adsorption Diffusion Aromatic hydrocarbons |
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