Ultra-deep removal of thiophene compounds in diesel oil over catalyst TiO2/Ni-ZSM-5 assisted by ultraviolet irradiating

Fuel, Available online 10 October 2012, In Press, Corrected Proof
Ultra-deep removal of thiophene compounds in diesel oil over catalyst TiO2/Ni-ZSM-5 assisted by ultraviolet irradiating
Lei Wang a, Haijun Cai b, Shuzhen Li a, Nchare Mominou c
a Shanghai Institute of Technology, Shanghai 201418, China
b Petrochina URUMQI Petrochemical Company Refinery, Urumqi 830019, China
c School of Geology and Mining, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon
Abstract
Reports results of a study of ultra-deep removal of thiophene compounds in diesel oil over catalyst assisted by ultraviolet irradiating (URTCU).  The model compounds were thiophene, benzothiophene, dibenzothiophene and 4,6-dimethyl-dibenzothiophene.  ZSM-5 zeolite was modified by Ti and Ni.  X-ray diffraction (XRD) showed the ZSM-5 remained intact after modification.
Researchers studied the effect on the desulfurization rate of catalyst/oil ratio, reaction temperature, the space velocity, reaction pressure and the oxidant amount.  Under optimized conditions, the removal rate of the sulfur model compounds approached to 100%.
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