A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In Situ Generated Dispersed Catalysts Based on Molybdenum and Tungsten Phosphides in Hydroprocessing of Guaiacol
https://orcid.org/https://orcid.org/0000-0002-3741-7833
https://orcid.org/https://orcid.org/0000-0003-1215-6136
https://orcid.org/https://orcid.org/0000-0001-8273-2560
https://orcid.org/https://orcid.org/0000-0002-3815-9565
Amorphous catalysts based on molybdenum and tungsten phosphides were prepared in situ from oil-soluble precursors such as triphenylphosphine and carbonyls of the corresponding metals during hydrodeoxygenation of guaiacol. These catalysts were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, extended X-ray absorption fine structure spectroscopy, and transmission electron microscopy. After 6 h of reaction at 320–380°C and an initial hydrogen pressure of 5 MPa, the guaiacol conversion amounted to 89–91% in the presence of the molybdenum phosphide catalyst and 80–86% with tungsten phosphide. The selectivity towards phenol as the main reaction product reached as high as 80% in the presence of molybdenum phosphide (360°C, 6 h) and 78% in the tungsten phosphide case (340°C, 1 h). In the presence of both catalytic systems, the reaction products also contained anisole, cresols, and toluene.
In Situ Generated Dispersed Catalysts Based on Molybdenum and Tungsten Phosphides in Hydroprocessing of Guaiacol
https://orcid.org/https://orcid.org/0000-0002-3741-7833
https://orcid.org/https://orcid.org/0000-0003-1215-6136
https://orcid.org/https://orcid.org/0000-0001-8273-2560
https://orcid.org/https://orcid.org/0000-0002-3815-9565
Amorphous catalysts based on molybdenum and tungsten phosphides were prepared in situ from oil-soluble precursors such as triphenylphosphine and carbonyls of the corresponding metals during hydrodeoxygenation of guaiacol. These catalysts were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, extended X-ray absorption fine structure spectroscopy, and transmission electron microscopy. After 6 h of reaction at 320–380°C and an initial hydrogen pressure of 5 MPa, the guaiacol conversion amounted to 89–91% in the presence of the molybdenum phosphide catalyst and 80–86% with tungsten phosphide. The selectivity towards phenol as the main reaction product reached as high as 80% in the presence of molybdenum phosphide (360°C, 6 h) and 78% in the tungsten phosphide case (340°C, 1 h). In the presence of both catalytic systems, the reaction products also contained anisole, cresols, and toluene.
In Situ Generated Dispersed Catalysts Based on Molybdenum and Tungsten Phosphides in Hydroprocessing of Guaiacol
https://orcid.org/https://orcid.org/0000-0002-3741-7833
https://orcid.org/https://orcid.org/0000-0003-1215-6136
https://orcid.org/https://orcid.org/0000-0001-8273-2560
https://orcid.org/https://orcid.org/0000-0002-3815-9565
Amorphous catalysts based on molybdenum and tungsten phosphides were prepared in situ from oil-soluble precursors such as triphenylphosphine and carbonyls of the corresponding metals during hydrodeoxygenation of guaiacol. These catalysts were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, extended X-ray absorption fine structure spectroscopy, and transmission electron microscopy. After 6 h of reaction at 320–380°C and an initial hydrogen pressure of 5 MPa, the guaiacol conversion amounted to 89–91% in the presence of the molybdenum phosphide catalyst and 80–86% with tungsten phosphide. The selectivity towards phenol as the main reaction product reached as high as 80% in the presence of molybdenum phosphide (360°C, 6 h) and 78% in the tungsten phosphide case (340°C, 1 h). In the presence of both catalytic systems, the reaction products also contained anisole, cresols, and toluene.
In Situ Generated Dispersed Catalysts Based on Molybdenum and Tungsten Phosphides in Hydroprocessing of Guaiacol
Pet. Chem.
Golubeva, M. A. (author) / Mukhtarova, M. (author) / Bugaev, A. L. (author) / Naranov, E. R. (author)
Petroleum Chemistry ; 62 ; 1300-1307
2022-11-01
8 pages
Article (Journal)
Electronic Resource
English
In Situ Generated Nickel Phosphide Based Catalysts for Hydroprocessing of Levulinic Acid
| Springer Verlag | 2021
Erratum to: In Situ Generated Nickel Phosphide Based Catalysts for Hydroprocessing of Levulinic Acid
| Springer Verlag | 2021
Properties of Electrolytic Dispersed Powders of Tungsten and Molybdenum Carbides
| British Library Online Contents | 2000