HDS of dibenzothiophenes and hydrogenation of tetralin over a SiO2 supported Ni-Mo-S catalyst

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DOIResolve DOI: http://doi.org/10.1007/s11705-015-1535-1
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TypeArticle
Journal titleFrontiers of Chemical Science and Engineering
ISSN2095-0179
Volume9
Issue3
Pages336348; # of pages: 13
Subjecthydrodesulphurization (HDS); hydrogenation; dibenzothiophene (DBT); 4,6-dimethyldibenzothiophene (4,6-DMDBT); tetralin
AbstractA one-step synthesized Ni-Mo-S catalyst supported on SiO2 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 DBTand 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 hydrogenationdesulphurization (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 DBTand 4,6-DMDBT and insufficient acidic sites on the catalyst surface.[Figure not available: see fulltext.]
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
NPARC number21277048
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Record identifier86fd1cec-439a-4b76-9d03-455af7bbb742
Record created2015-11-10
Record modified2016-05-09
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