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2015 1

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HDS of dibenzothiophenes and hydrogenation of tetralin over a SiO

Qiang Wei, Jinwen Chen, Chaojie Song, Guangchun Li

《化学科学与工程前沿（英文）》 2015年 第9卷 第3期   页码 336-348 doi: 10.1007/s11705-015-1535-1

摘要： A one-step synthesized Ni-Mo-S catalyst supported on SiO was prepared and used for hydrodesulphurization (HDS) of dibenzothiophene (DBT), and 4,6-dimethyl-dibenzothiophene (4,6-DMDBT), and for hydrogenation of tetralin. The catalyst showed relatively high HDS activity with complete conversion of DBT and 4,6-DMDBT at temperature of 280 °C and a constant pressure of 435 psi. The HDS conversions of DBT and 4,6-DMDBT increased with increasing temperature and pressure, and decreasing liquid hourly space velocity (LHSV). The HDS of DBT proceeded mostly through the direct desulphurization (DDS) pathway whereas that of 4,6-DMDBT occurred mainly through the hydrogenation-desulphurization (HYD) pathway. Although the catalyst showed up to 24% hydrogenation/dehydrogenation conversion of tetralin, it had low conversion and selectivity for ring opening and contraction due to the competitive adsorption of DBT and 4,6-DMDBT and insufficient acidic sites on the catalyst surface.

关键词： hydrodesulphurization (HDS)     hydrogenation     dibenzothiophene (DBT)     4     6-dimethyldibenzothiophene (4     6-DMDBT)     tetralin    

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HDS of dibenzothiophenes and hydrogenation of tetralin over a SiO

Qiang Wei, Jinwen Chen, Chaojie Song, Guangchun Li

期刊论文