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On Stability of High-Surface-Area Al2O3, TiO2, SiO2-Al2O3, and Activated Carbon Supports during Preparation of NiMo Sulfide Catalysts for Parallel Deoxygenation of Octanoic Acid and Hydrodesulfurization of 1-Benzothiophene
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SYSNO ASEP 0565130 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title On Stability of High-Surface-Area Al2O3, TiO2, SiO2-Al2O3, and Activated Carbon Supports during Preparation of NiMo Sulfide Catalysts for Parallel Deoxygenation of Octanoic Acid and Hydrodesulfurization of 1-Benzothiophene Author(s) Kaluža, Luděk (UCHP-M) RID, ORCID, SAI
Soukup, Karel (UCHP-M) RID, SAI, ORCID
Koštejn, Martin (UCHP-M) RID, SAI, ORCID
Karban, Jindřich (UCHP-M) RID, ORCID, SAI
Palcheva, R. (BG)
Laube, Marek (UCHP-M)
Gulková, Daniela (UCHP-M) RID, ORCID, SAIArticle number 1559 Source Title Catalysts. - : MDPI
Roč. 12, č. 12 (2022)Number of pages 12 s. Language eng - English Country CH - Switzerland Keywords deoxygenation ; hydrodesulfurization ; NiMo catalyst OECD category Chemical process engineering R&D Projects TN01000048 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) GA17-22490S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UCHP-M - RVO:67985858 UT WOS 000900545800001 EID SCOPUS 85144944698 DOI 10.3390/catal12121559 Annotation NiMo sulfide catalysts were prepared by the impregnation of high surface area supports with an aqueous solution made of NiCO3 2Ni(OH)2, MoO3 and citric acid, followed by freeze drying and sulfidation in H2S/H2 mixture. N2 physisorption and X-ray diffraction were selected to investigate the amphoteric oxides Al2O3 and TiO2, acidic SiO2-Al2O3 and activated carbon supports, fresh prepared sulfide NiMo catalysts and spent catalysts after model parallel reaction of octanoic acid deoxygenation and 1-benzothiophene hydrodesulfurization. The studied mesoporous amphoteric oxides Al2O3 and TiO2 did not lead to highly active NiMo catalysts due to the low hydrothermal stability of these supports during the preparation of the active sulfide phase and deoxygenation reaction. The most active catalyst based on oxidic support was the NiMo sulfide supported on acidic mesoporous SiO2-Al2O3, which was explained by the increased stability of this support to the water and CO/CO2 mixture during the activation of the sulfidic phase and deoxygenation reaction. The extraordinarily high stability of the activated carbon support led to outstanding activities of the sulfidic NiMo/C catalyst. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2023 Electronic address https://www.mdpi.com/2073-4344/12/12/1559
Number of the records: 1