Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 58, Issue -, Pages 344-350Publisher
ELSEVIER
DOI: 10.1016/j.jtice.2015.06.001
Keywords
Polymolybdates catalyst; Oxidative desulfurization; Commercial diesel; tert-butyl hydroperoxide; Mechanism
Categories
Funding
- Ministry of Higher Education (MOHE) [4F195]
- Ministry of Science, Technology and Innovation (MOSTI)
Ask authors/readers for more resources
The catalytic oxidative desulfurization (Cat-ODS) is a process comprises of catalyst, oxidant and solvent for extraction. In this research, new catalyst formulation of alumina supported polymolybdate based catalyst was investigated in this research. Experimentally, the obtained results revealed that, Fe/MoO3-PO4(10:90)/Al2O3 calcined at 500 degrees C was the best and potentially catalyst in this study. The catalyst was able to reduce sulfur levels in commercial diesel from about 440 ppmw to 17.6 ppmw with 96% of total sulfur removal. Highest catalytic activity showed that the presence of phosphorus and ferum can significantly improve the catalytic activity of the molybdenum oxide catalyst. Temperature programme desorption (TPD) analysis showed that the Fe/MoO3-PO4(10:90)/Al2O3 catalyst calcined at 500 degrees C was strong lewis acid. P-31 NMR analysis showed the presence of different phosphate species as calcination temperature was increased. The catalyst with the best activity showed high surface area of 239 m(2)/g. The oxidation mechanism was studied in detail, and based on our results, the oxidation reactivity of different substrates was in the following order: DBT>4,6-DMDBT>Th. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available