Abstract
An efficient and green extractive catalytic oxidative desulfurization (ECODS) process is developed for diesel by using polyethylene glycol (PEG) oligomers, H2O2 and a phosphotungstate based poly ionic liquid (HPW-PIL) as extractant, oxidant and catalyst, respectively. The PEG oligomers with repeating glycol units of 0, 4 and 8 are determined as the best extractants among acetonitrile, methanol, DMF, [BMIM]BF4, and PEG-2000 with comprehensive characteristics like non-toxicity, non-volatility, low cost, easy recycling, and good desulfurization performance. Benzothiophene (BT) and dibenzothiophene (DBT) in model oil can be removed completely within 2h at the following conditions: PEG oligomer/oil=0.2 (mass ratio), H2O2 usage of O/S=20 (mole ratio), HPW-PIL catalyst/oil=1/100 (mass ratio), at the temperature of 353K. And the desulfurization ability of the present process can be retained as 99% even after six successive reuses without regeneration. Further, the S-content in real diesel can also be reduced from 110 to 9.3ppm-S by the ECODS process followed by AlCl3 adsorption for the oxidized diesel. Meanwhile, the PEG extractant and the HPW-PIL catalyst can be facilely regenerated and recycled.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
