期刊
CATALYSIS TODAY
卷 148, 期 1-2, 页码 49-54出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2009.06.023
关键词
HMFI-SBA-15 hybrid material; Pt/HMFI-SBA-15 catalyst; Tetralin; Hydrogenation; Ring contraction; Dehydrogenation
资金
- CONACyT [159343, 49479]
A Pt catalyst supported on a hybrid material, HMFI-SBA-15, was prepared. Both, support and catalyst (Pt/HMFI-SBA-15) were characterized by nitrogen physisorption, small and wide (2 theta) angle XRD patterns, FT-IR, SEM and HRTEM. The acidic properties of the hybrid material were studied by cumene dealkylation and those of the catalyst were studied by FT-IR of adsorbed pyridine. The catalyst, Pt/HMFI-SBA-1 5, was tested for tetralin transformation at various reaction temperatures 498, 523, 548, 573, 585 and 598 K. Wide-angle XRD and FT-IR in the skeletal region indicate the presence of MFI zeolite fragments incorporated onto SBA-15. The characterization of the acid sites on the support by cumene dealkylation and FT-IR pyridine adsorption revealed the presence of Bronsted acid sites related to the HMFI zeolite fragments in the hybrid materials. For the catalyst, a homogeneous distribution of Pt clusters was found by HRTEM. In the transformation of tetralin, at all the reaction temperatures, the main products were trans + cis-decalins. However, at high reaction temperature ring contraction to spirodecane and dehydrogenation to naphthalene were observed. At 598 K, a maximum of 8% of ring contraction products was obtained. (C) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据