Preparation of sulphide catalysts for heteroatom elimination in hydrocarbon refining
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F25%3A00618306" target="_blank" >RIV/67985858:_____/25:00618306 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/25:43931568
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0263876225001248?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0263876225001248?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cherd.2025.03.016" target="_blank" >10.1016/j.cherd.2025.03.016</a>
Alternative languages
Result language
angličtina
Original language name
Preparation of sulphide catalysts for heteroatom elimination in hydrocarbon refining
Original language description
Sulphide catalysts containing Co, Ni, Mo and/or W catalyse hydrogenolysis of carbon sulphur/nitrogen/oxygen bonds and they are widely used in the hydrodesulphurization (HDS) of petroleum fractions. The HDS process produces H2S, which is subsequently partially oxidized to water and elemental sulphur in the Claus process. Nevertheless, this process can be overflowed with H2S. Sulphide catalysts are therefore investigated for the direct thermocatalytic decomposition of H2S to form H2 and elemental sulphur. This work tailors on a novel and straightforward preparation method of the unsupported form of Co/MoS2, Ni/MoS2, Ni/WS2 and Ni/MoWS2 catalysts. The aqueous slurry of CoCO3.Co(OH)2 or 2NiCO3.3Ni(OH)2.4H2O reacts with MoS2, WS2 or MoS2+WS2 during milling in a planetary mill. After drying and re-sulphidation, the catalyst is characterised by its specific surface area (SBET), free sulphur vacancies (O2 up-take), crystalline size of molybdenite and/or tungstenite (DXRD), activity in thiophene (Th) and 4,6-dimethyldibenzothiophene (4,6DMDBT) HDS, and activity in thermo-catalytic decomposition of H2S. We concluded that the prepared catalysts nare active in Th and 4,6DMDBT hydrodesulphurization, and thermo-catalytic decomposition of H2S. The Ni/WS2 is the most active in all reactions and also the most selective to direct desulphurization (DDS) during the 4,6DMDBT HDS. WS2 best suits the studied preparation method.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Engineering Research and Design
ISSN
0263-8762
e-ISSN
1744-3563
Volume of the periodical
216
Issue of the periodical within the volume
APR 2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
515-522
UT code for WoS article
001459402700001
EID of the result in the Scopus database
2-s2.0-105001373267