Study of hydrodesulfurization of 4,6-DM-DBT over Pd supported on mesoporous USY zeolite
Study of hydrodesulfurization of 4,6-DM-DBT over Pd supported on mesoporous USY zeolite
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介孔USY沸石负载Pd对4,6-DM-DBT加氢脱硫研究
DOI:
10.1016/j.apcata.2012.05.028
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发表时间:
2012-08
期刊:
影响因子:
--
通讯作者:
Tang, Tian-di
中科院分区:
文献类型:
--
作者:
Zhang, Lei;Fu, Wenqian;Ke, Qingping;Zhang, Shuai;Jin, Huile;Hu, Jianbo;Wang, Shun;Tang, Tian-di
Two ultra-stable Y zeolites (USY550 and USY600) with mesoporous volumes of 0.15 and 0.25cm3/g were prepared by steam dealumination at 550 and 600°C, respectively. Pd catalysts were supported on γ-Al2O3, H-forms of zeolite Y (HY), mesoporous USY for hydrodesulfurization (HDS) of 4,6-dimethyldibenzothiophene (4,6-DM-DBT). The 4,6-DM-DBT conversions over Pd/USY550 (85.7%) and Pd/USY600 (76.9%) are higher than over Pd/HY (43.7%) due to the facilitated mass transfer of 4,6-DM-DBT in the mesopores USY. The better HDS performance of Pd/USY than Pd/γ-Al2O3is attributed to the stronger acidity of USY, as demonstrated by the stepwise temperature-programmed desorption of ammonia. Thermogravimetric and X-ray photoelectron spectroscopic analysis of the used catalysts showed that the poison of Pd particles over the supports by sulfur was responsible for the catalyst deactivation.
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影响因子:
22.1
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通讯作者:
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影响因子:
3.3
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Wenmin Zhang;P. Smirniotis;and M. Gangoda;R. Bose
影响因子:
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影响因子:
7.3
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通讯作者:
G. Mcvicker;J. Kao;J. J. Ziemiak-J.;W. Gates;J. Robbins;M. Treacy;S. Rice;T. H. Vanderspurt;V. R. Cross;A. Ghosh