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CoMo Sulfide Catalysts Supported on Natural Halloysite Nanotubes: Dealumination as an Effective Approach to Improve Catalytic Performance
https://orcid.org/https://orcid.org/0000-0002-7827-7953
https://orcid.org/https://orcid.org/0000-0002-5632-2717
https://orcid.org/https://orcid.org/0000-0002-9014-0909
https://orcid.org/https://orcid.org/0000-0003-1578-5106
https://orcid.org/https://orcid.org/0000-0002-2877-0395
–CoMo sulfide catalysts supported on aluminosilicate halloysite nanotubes (CoMoS/HNT) and on dealuminated halloysite nanotubes (CoMoS/HNT(deAl)) were synthesized by incipient wetness impregnation using pseudoboehmite as a binder. Both the supports and related catalysts were characterized by low-temperature nitrogen adsorption, energy dispersive X-ray fluorescence analysis, temperature-programmed reduction by hydrogen, FTIR spectroscopy of adsorbed pyridine, transmission electron microscopy, and X-ray photoelectron spectroscopy. The catalyst samples were further tested in hydrotreating of diesel feedstocks. Dealumination of halloysite was found to increase the area of Si-enriched surface segments, thus weakening interaction between the sulfide phase and the support and, hence, increasing the content of highly active sulfide particles. In the case of a mixed feedstock, CoMoS/HNT(deAl) + Al2O3 achieved a reaction rate constant of 0.605 ppm S–0.4/g(L–0.4 h) compared to 0.429 ppm S–0.4/g(L–0.4 h) for an alumina-supported sample.
CoMo Sulfide Catalysts Supported on Natural Halloysite Nanotubes: Dealumination as an Effective Approach to Improve Catalytic Performance
https://orcid.org/https://orcid.org/0000-0002-7827-7953
https://orcid.org/https://orcid.org/0000-0002-5632-2717
https://orcid.org/https://orcid.org/0000-0002-9014-0909
https://orcid.org/https://orcid.org/0000-0003-1578-5106
https://orcid.org/https://orcid.org/0000-0002-2877-0395
–CoMo sulfide catalysts supported on aluminosilicate halloysite nanotubes (CoMoS/HNT) and on dealuminated halloysite nanotubes (CoMoS/HNT(deAl)) were synthesized by incipient wetness impregnation using pseudoboehmite as a binder. Both the supports and related catalysts were characterized by low-temperature nitrogen adsorption, energy dispersive X-ray fluorescence analysis, temperature-programmed reduction by hydrogen, FTIR spectroscopy of adsorbed pyridine, transmission electron microscopy, and X-ray photoelectron spectroscopy. The catalyst samples were further tested in hydrotreating of diesel feedstocks. Dealumination of halloysite was found to increase the area of Si-enriched surface segments, thus weakening interaction between the sulfide phase and the support and, hence, increasing the content of highly active sulfide particles. In the case of a mixed feedstock, CoMoS/HNT(deAl) + Al2O3 achieved a reaction rate constant of 0.605 ppm S–0.4/g(L–0.4 h) compared to 0.429 ppm S–0.4/g(L–0.4 h) for an alumina-supported sample.
CoMo Sulfide Catalysts Supported on Natural Halloysite Nanotubes: Dealumination as an Effective Approach to Improve Catalytic Performance
https://orcid.org/https://orcid.org/0000-0002-7827-7953
https://orcid.org/https://orcid.org/0000-0002-5632-2717
https://orcid.org/https://orcid.org/0000-0002-9014-0909
https://orcid.org/https://orcid.org/0000-0003-1578-5106
https://orcid.org/https://orcid.org/0000-0002-2877-0395
–CoMo sulfide catalysts supported on aluminosilicate halloysite nanotubes (CoMoS/HNT) and on dealuminated halloysite nanotubes (CoMoS/HNT(deAl)) were synthesized by incipient wetness impregnation using pseudoboehmite as a binder. Both the supports and related catalysts were characterized by low-temperature nitrogen adsorption, energy dispersive X-ray fluorescence analysis, temperature-programmed reduction by hydrogen, FTIR spectroscopy of adsorbed pyridine, transmission electron microscopy, and X-ray photoelectron spectroscopy. The catalyst samples were further tested in hydrotreating of diesel feedstocks. Dealumination of halloysite was found to increase the area of Si-enriched surface segments, thus weakening interaction between the sulfide phase and the support and, hence, increasing the content of highly active sulfide particles. In the case of a mixed feedstock, CoMoS/HNT(deAl) + Al2O3 achieved a reaction rate constant of 0.605 ppm S–0.4/g(L–0.4 h) compared to 0.429 ppm S–0.4/g(L–0.4 h) for an alumina-supported sample.
CoMo Sulfide Catalysts Supported on Natural Halloysite Nanotubes: Dealumination as an Effective Approach to Improve Catalytic Performance
Pet. Chem.
Vinogradov, N. A. (author) / Elizarova, V. I. (author) / Vutolkina, A. V. (author) / Pimerzin, A. A. (author) / Glotov, A. P. (author)
Petroleum Chemistry ; 64 ; 480-491
2024-04-01
12 pages
Article (Journal)
Electronic Resource
English
| Springer Verlag | 2023
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