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Frontiers of Chemical Science and Engineering

ISSN 2095-0179

ISSN 2095-0187(Online)

CN 11-5981/TQ

邮发代号 80-969

2019 Impact Factor: 3.552

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Frontiers of Chemical Science and Engineering  2015, Vol. 9 Issue (3): 336-348   https://doi.org/10.1007/s11705-015-1535-1
  RESEARCH ARTICLE 本期目录
HDS of dibenzothiophenes and hydrogenation of tetralin over a SiO2 supported Ni-Mo-S catalyst? ?
Qiang Wei1,Jinwen Chen1,*(),Chaojie Song2,Guangchun Li2
1. Natural Resources Canada, CanmetENERGY-Devon, One Oil Patch Drive, Devon, AB, T9G IA8, Canada
2. Energy, Mining & Environment, National Research Council Canada, 4250 westbrook Mall, Vancouver, BC, V6J 1W5, Canada
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Abstract：

A 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 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.
Key words： hydrodesulphurization (HDS)    hydrogenation    dibenzothiophene (DBT)    4,6-dimethyldibenzothiophene (4,6-DMDBT)    tetralin
收稿日期: 2015-07-03      出版日期: 2015-09-30
Corresponding Author(s): Jinwen Chen   
 引用本文:   
. [J]. Frontiers of Chemical Science and Engineering, 2015, 9(3): 336-348.
Qiang Wei, Jinwen Chen, Chaojie Song, Guangchun Li. HDS of dibenzothiophenes and hydrogenation of tetralin over a SiO2 supported Ni-Mo-S catalyst? ?. Front. Chem. Sci. Eng., 2015, 9(3): 336-348.
 链接本文:  
https://academic.hep.com.cn/fcse/CN/10.1007/s11705-015-1535-1
https://academic.hep.com.cn/fcse/CN/Y2015/V9/I3/336
Fig.1  
Fig.2  
Fig.3  
Fig.4  
Fig.5  
Fig.6  
Fig.7  
Fig.8  
Fig.9  
Product selectivity Reaction temperature /°C
310 320 330 340
Tetralin conversion /% 17.4 17.9 20.9 23.6
Dehydrogenation to naphthalene /% 0.4 0.6 0.8 1.2
Dehydrogenation selectivity /% 4.4 7.0 8.4 11.0
Hydrogenation satHYPs (trans-Decalin) /% 5.7 5.4 6.2 7.1
satHYPs (cis-Decalin) /% 2.0 1.9 2.4 2.4
Hydrogenation selectivity /% 92.9 90.1 89.0 87.6
Ring opening and contraction (ROC) aroROPs (n-butyl-benzene) /wppm 65 57 94 236
aroROPs selectivity /% 0.1 0.1 0.1 0.2
aroRCPs (methyl-indane) /wppm 37 42 77 230
aroRCPs selectivity /% 0.0 0.0 0.1 0.2
satRCPs (1,1'-bicyclopentyl) /% 0.2 0.2 0.2 0.1
satRCPs selectivity /% 2.7 2.7 2.4 0.9
Total ROC selectivity /% 2.8 2.8 2.6 1.3
Tab.1  
Product selectivity Reaction temperature /°C
240 260 280 300 320
Tetralin conversion /% 2.3 3.2 3.9 8.1 9.6
Dehydrogenation to naphthalene /% 0.1 0.1 0.3 0.6 1.6
Dehydrogenation selectivity /% 7.3 9.2 14.8 16.8 35.2
Hydrogenation satHYPs (trans-decalin) /% 0.6 0.9 1.0 2.2 2.1
satHYPs (cis-decalin) /% 0.3 0.3 0.4 0.7 0.7
Hydrogenation selectivity /% 81.5 82.7 79.2 80.0 62.1
Ring opening and contraction (ROC) aroROPs (n-butyl-benzene) /wppm 9 0 0 16 44
aroROPs selectivity /% 0.0 0.0 0.0 0.0 0.1
aroRCPs (methyl-indane) /ppm 5 2 5 17 48
aroRCPs selectivity /% 0.0 0.0 0.0 0.1 0.1
satRCPs (1,1'-bicyclopentyl) /% 0.1 0.1 0.1 0.1 0.1
satRCPs selectivity /% 11.1 8.1 6.1 3.2 2.5
Total ROC selectivity /% 11.2 8.1 6.2 3.3 2.7
Tab.2  
Product selectivity Operating pressure /psi
300 435 725
Tetralin conversion /% 2.0 2.3 4.3
Dehydrogenation to naphthalene /% 0.1 0.1 0.0
Dehydrogenation selectivity /% 11.8 7.3 2.5
Hydrogenation satHYPs (trans-decalin) /% 0.5 0.6 1.3
satHYPs (cis-decalin) /% 0.2 0.3 0.5
Hydrogenation selectivity /% 74.9 81.5 89.9
Ring opening and contraction (ROC) aroROPs (n-butyl-Benzene) /wppm 5 9 0
aroROPs selectivity /% 0.1 0.1 0
aroRCPs (methyl-indane) /wppm 4 5 7
aroRCPs selectivity /% 0.0 0.1 0.0
satRCPs (1,1'-Bicyclopentyl) /% 0.1 0.1 0.2
satRCPs selectivity /% 13.2 11.1 7.6
Total ROC selectivity /% 13.3 11.2 7.7
Tab.3  
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