期刊
FUEL
卷 149, 期 -, 页码 149-161出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2014.08.045
关键词
HDS; Dibenzothiophene; Mesoporous SBA-16; Al-loading; Co-Mo-W
资金
- Scientific Cooperation FONCICYT Program [FONCICYT-96194]
- Spanish Ministry of Science and Innovation [ENE2010-15387-C02-01]
- Community of Madrid [S2009ENE-1743]
- CONACYT [182191]
- PROMEP [PTC-273]
- CIC UMSNH 2013 Project
- CIC UMSNH 2014 Project
In this work, the catalytic activity of ternary Co-Mo-W/Al-SBA-16 systems was investigated in the reaction of hydrodesulfurization (HDS) of dibenzothiophene (DBT) performed in a batch reactor at 350 degrees C and total H-2 pressure of 33.8 bar. The synthesized materials were characterized by a variety of techniques (chemical analysis, N-2 adsorption-desorption isotherms, XRD, TPR, TPD-NH3, FTIR of adsorbed pyridine, DRS-UV-vis, HRTEM and XPS). By applying the direct synthesis method, high surface area substrates with Al3+ incorporated into the silica framework. The activity results indicate that all CoMoW/Al-SBA-16 catalysts were active in the HDS of DBT, the largest activity was found in the catalyst with the highest Al-content. This behavior was explained in terms of its largest specific area and good dispersion of the metal sulfide phases having average size of 3.3 nm (from HRTEM). Moreover, FT-IR spectroscopic study of adsorbed pyridine indicated Al incorporation into a SBA-16 substrate produces both Bronsted and Lewis acidities, which are beneficial for the HDS of DBT. All catalysts showed a high selectivity towards biphenyl indicating that HDS of DBT reaction proceeds mainly via direct desulfurization (DDS) reaction pathway. (C) 2014 Elsevier Ltd. 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