Effect of Polyethylene Glycol Addition on NiO-MoO3/Al2O3 and NiO-MoO3-P2O5/Al2O3 Hydrodesulfurization Catalyst

Addition of polyethylene glycol (PEG) as a water soluble organic compound to the impregnation solution during catalyst preparation was investigated to improve NiO-MoO3/Al2O3 and NiO-MoO3-P2O5/Al2O3 hydrodesulfurization catalysts. XPS measurement suggested that PEG addition increases the dispersion o...

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Bibliographic Details
Published in:Journal of the Japan Petroleum Institute 2005, Vol.48(6), pp.351-357
Main Authors: Iwamoto, Ryuichiro, Kagami, Narinobu, Sakoda, Yukihiro, Iino, Akira
Format: Article
Language:English
Subjects:
Applied sciences
Catalyst preparation
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
Hydrodesulfurization
Nickel molybdenum catalyst
Phosphorus
Polyethylene glycol
Water soluble organic compound
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Summary:Addition of polyethylene glycol (PEG) as a water soluble organic compound to the impregnation solution during catalyst preparation was investigated to improve NiO-MoO3/Al2O3 and NiO-MoO3-P2O5/Al2O3 hydrodesulfurization catalysts. XPS measurement suggested that PEG addition increases the dispersion of nickel and molybdenum on the alumina support and improves dibenzothiophene and resid hydrodesulfurization activity. The effect of PEG addition was significant for catalyst prepared from alumina with lower specific surface area and higher phosphorus content, in which the active metal precursor tends to easily aggregate. PEG might block the aggregation of active metal precursors during the drying step and may increase the number of hydrodesulfurization active sites.
ISSN:1346-8804
1349-273X
DOI:10.1627/jpi.48.351