Comparison of the HDS DBT reaction using bulk and supported catalysts
The paper describes in detail the procedure for the preparation of a granular bulk NiMoW catalyst and a supported reference NiMo/Al2O3 catalyst. Mention is made of investigations of the supported and bulk catalysts by various physico-chemical methods (nitrogen adsorption-desorption method, X-ray pho...
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| Format: | Article |
| Language: | English |
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Ural Federal University
2024-04-01
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| Series: | Chimica Techno Acta |
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| Online Access: | https://chimicatechnoacta.ru/article/view/7621 |
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| author | Polina P. Mukhacheva Yuliya V. Vatutina Ksenia A. Nadeina Sergey V. Budukva Maxim A. Panafidin Vera P. Pakharukova Mikhail V. Parfenov Evgeny Yu. Gerasimov Oleg V. Klimov Aleksandr S. Noskov |
| author_facet | Polina P. Mukhacheva Yuliya V. Vatutina Ksenia A. Nadeina Sergey V. Budukva Maxim A. Panafidin Vera P. Pakharukova Mikhail V. Parfenov Evgeny Yu. Gerasimov Oleg V. Klimov Aleksandr S. Noskov |
| author_sort | Polina P. Mukhacheva |
| collection | DOAJ |
| description | The paper describes in detail the procedure for the preparation of a granular bulk NiMoW catalyst and a supported reference NiMo/Al2O3 catalyst. Mention is made of investigations of the supported and bulk catalysts by various physico-chemical methods (nitrogen adsorption-desorption method, X-ray photoelectron spectroscopy, TPD-NH3, HRTEM and X-ray diffraction analysis). The experiments to estimate catalytic activity and compare rate constant of hydrodesulfurization of dibenzothiophene using both catalysts have been carried out. It is shown that textural properties of the catalysts significantly differ. The supported catalyst has more developed specific surface area and pore volume than the bulk catalyst. TPD-NH3 showed an increased acidity of the supported catalyst in comparison the bulk catalyst. It is shown by the X-ray photoelectron spectroscopy method that in both samples Mo on the surface is present exclusively in the form of Mo4+ ion. However, the bulk catalyst differs from the supported catalyst in that it contains a larger amount of Ni as part of the active NiMo(W)S phase. The catalytic activity tests demonstrated that the bulk catalyst is more active at 240, 250 and 260°C, it is discovered that the rate constant in hydrodesulfurization of dibenzothiophene for the bulk NiMoW catalyst is twice higher at 240ºC than that of the supported NiMo/Al2O3 catalyst. |
| format | Article |
| id | doaj-art-9ff8973eaef940339aa28ed525922428 |
| institution | Kabale University |
| issn | 2411-1414 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | Ural Federal University |
| record_format | Article |
| series | Chimica Techno Acta |
| spelling | doaj-art-9ff8973eaef940339aa28ed5259224282025-08-20T03:38:27ZengUral Federal UniversityChimica Techno Acta2411-14142024-04-0111210.15826/chimtech.2024.11.2.065312Comparison of the HDS DBT reaction using bulk and supported catalystsPolina P. Mukhacheva0Yuliya V. Vatutina1Ksenia A. Nadeina2Sergey V. Budukva3Maxim A. Panafidin4Vera P. Pakharukova5Mikhail V. Parfenov6Evgeny Yu. Gerasimov7Oleg V. Klimov8Aleksandr S. Noskov9Boreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RAS; Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASBoreskov Institute of Catalysis SB RASThe paper describes in detail the procedure for the preparation of a granular bulk NiMoW catalyst and a supported reference NiMo/Al2O3 catalyst. Mention is made of investigations of the supported and bulk catalysts by various physico-chemical methods (nitrogen adsorption-desorption method, X-ray photoelectron spectroscopy, TPD-NH3, HRTEM and X-ray diffraction analysis). The experiments to estimate catalytic activity and compare rate constant of hydrodesulfurization of dibenzothiophene using both catalysts have been carried out. It is shown that textural properties of the catalysts significantly differ. The supported catalyst has more developed specific surface area and pore volume than the bulk catalyst. TPD-NH3 showed an increased acidity of the supported catalyst in comparison the bulk catalyst. It is shown by the X-ray photoelectron spectroscopy method that in both samples Mo on the surface is present exclusively in the form of Mo4+ ion. However, the bulk catalyst differs from the supported catalyst in that it contains a larger amount of Ni as part of the active NiMo(W)S phase. The catalytic activity tests demonstrated that the bulk catalyst is more active at 240, 250 and 260°C, it is discovered that the rate constant in hydrodesulfurization of dibenzothiophene for the bulk NiMoW catalyst is twice higher at 240ºC than that of the supported NiMo/Al2O3 catalyst.https://chimicatechnoacta.ru/article/view/7621bulk catalystsupported catalysthydrodesulphurizationdibenzothiophenerate constant |
| spellingShingle | Polina P. Mukhacheva Yuliya V. Vatutina Ksenia A. Nadeina Sergey V. Budukva Maxim A. Panafidin Vera P. Pakharukova Mikhail V. Parfenov Evgeny Yu. Gerasimov Oleg V. Klimov Aleksandr S. Noskov Comparison of the HDS DBT reaction using bulk and supported catalysts Chimica Techno Acta bulk catalyst supported catalyst hydrodesulphurization dibenzothiophene rate constant |
| title | Comparison of the HDS DBT reaction using bulk and supported catalysts |
| title_full | Comparison of the HDS DBT reaction using bulk and supported catalysts |
| title_fullStr | Comparison of the HDS DBT reaction using bulk and supported catalysts |
| title_full_unstemmed | Comparison of the HDS DBT reaction using bulk and supported catalysts |
| title_short | Comparison of the HDS DBT reaction using bulk and supported catalysts |
| title_sort | comparison of the hds dbt reaction using bulk and supported catalysts |
| topic | bulk catalyst supported catalyst hydrodesulphurization dibenzothiophene rate constant |
| url | https://chimicatechnoacta.ru/article/view/7621 |
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