DICP OpenIR
学科主题物理化学
HY Zeolites Modified by Chemical Liquid Deposition and the Catalytic Performance in Shape-selective tert-Butylation of Naphthalene
Wang YL(王莹利); Xu L(许磊); Yu ZX(于政锡); Zhang XZ(张新志); Liu ZM(刘中民)
会议名称14th International Congress on Catalysis
会议日期2008-7-13
2008-07-13
会议地点韩国
页码216/1
部门归属八室
主办者韩国化学工程研究所
英文摘要HY zeolite was modified by a method of chemical liquid deposition using i-C4H9Si(OCH2CH3)3, followed by post-treatment in the steaming at 873K. The modified zeolites were designed as SiY0.1, SiY0.3 and SiY0.3-ST. The pore-opening size change of the modified HY zeolites was characterized by adsorption of o-xylene(0.71nm) and 1,3,5-trimethybenzene(TMB, 0.76nm). Studies of the adsorption equilibrium time of o-xylene(t7.1) and 1,3,5-TMB(t7.6) indicated that pore-opening size was narrowed gradually in the order of samples HY, SiY0.1, SiY0.3 and SiY0.3-ST. And the suppressed effect was stronger on larger molecule with narrowing pore-opening size. The catalytic performance was investigated with liquid phase tert-butylation of naphthalene in autoclave reactor. HY catalyst exhibited the lower selectivity for 2,6-di-tert-butylnaphthalen (DTBN). The silica-deposited HY improved the para-selectivity, and 2,6-/2,7-DTBN ratios were increased to 5.91 and 6.21 over SiY0.1 and SiY0.3, respectively. SiY0.3-ST catalyst gave the highest para-selectivity, with 2,6-/2,7-DTBN ratio of 6.62. The result showed that there was a direct correlation between 2,6-/2,7-DTBN ratio and t7.6/t7.1. Therefore, the close relations among the narrowing of catalysts pore-opening size, the differentiation of adsorption rate and para-selectivity were established.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/113138
专题中国科学院大连化学物理研究所
通讯作者Liu ZM(刘中民)
推荐引用方式
GB/T 7714
Wang YL,Xu L,Yu ZX,et al. HY Zeolites Modified by Chemical Liquid Deposition and the Catalytic Performance in Shape-selective tert-Butylation of Naphthalene[C],2008:216/1.
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