Počet záznamů: 1
Characterization and HDS activity of Mo and NiMo sulfided catalyst prepared by thioglycolic acid assisted hydrothermal deposition method.
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SYSNO ASEP 0552065 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Characterization and HDS activity of Mo and NiMo sulfided catalyst prepared by thioglycolic acid assisted hydrothermal deposition method. Tvůrce(i) Kaluža, Luděk (UCHP-M) RID, ORCID, SAI
Palcheva, R. (BG)
Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Tyuliev, G. (BG)
Gulková, Daniela (UCHP-M) RID, ORCID, SAI
Dimitrov, L. (BG)
Avdeev, G. (BG)Číslo článku 163925 Zdroj.dok. Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 903, MAY 15 (2022)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova NiMo catalysts ; hydrothermal synthesis ; thioglycolic acid ; HDS of thiophene Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Způsob publikování Open access s časovým embargem (16.05.2024) Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000753459300004 EID SCOPUS 85123349448 DOI 10.1016/j.jallcom.2022.163925 Anotace Dispersed Ni-Mo sulfide catalysts were synthesized by hydrothermal deposition method with the assistance of thioglycolic acid as sulfiding agent ex situ at 160oC. The prepared samples were characterized by SBET, XRD, SEM, FTIR, XPS, TPR/TPS, TPD-NH3. The catalyst activity was investigated during hydrodesulfurization (HDS) of thiophene at 340oC. XRD and XPS methods showed that this hydrothermal synthesis of MoAl and NiMoAl solids yielded sulfide crystalline phases with high bulk and surface S/Mo ratio. Re-sulfidation of the Ni-containing samples led to an increase in surface area, which was thus able to redisperse the NiMo sulfide active sites. The results of temperature programmed sulfidation measurements combined with mass spectrometric analysis (TPS-MS) of the catalysts revealed the formation of a fraction of thioglycolic acid (TGA) species that remained in the pores of the sample with the highest TGA content. In the NiMo catalyst prepared at TGA/Mo molar ratio of four, this TGA enhanced the amount of NiMoS phase in the catalyst and positively affected the HDS activity.
Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2023 Elektronická adresa http://hdl.handle.net/11104/0327519
Počet záznamů: 1