Catalysts for the desulfurization of gasoline samples were synthesized via the immobilization of well-dispersed phosphotungstic acid(HPW)on Mobil compo-sition of matter-twenty-two(MWW)zeolite.Characteriza-tion results...Catalysts for the desulfurization of gasoline samples were synthesized via the immobilization of well-dispersed phosphotungstic acid(HPW)on Mobil compo-sition of matter-twenty-two(MWW)zeolite.Characteriza-tion results indicated that these catalysts possess a mesoporous structure with the retention of the Keggin structure of immobilized HPW.Relevant reaction para-meters influencing sulfur removal were systematically investigated,including HPW loading,catalyst dosage,temperature,initial S-concentration,molar ratio of oxidant to sulfide(O/S),volume ratio of MeCN to model oil(Ext./oil),and sulfide species.The 40 wt-%HPW/MWW catalyst exhibited the highest catalytic activity with 99.6%dibenzothiophene sulfur removal from prepared samples.The 40 wt-%HPW/MWW catalyst was recycled four times and could be easily regenerated.Finally,as an exploratory study,straight-run-gasoline and fluid catalytic cracking gasoline were employed to accurately evaluate the desulfurization performance of 40 wt-%HPW/MWW.Our research provides new insights into the development and application of catalysts for desulfurization of gasoline.展开更多
基金supported by Petroleum Technology Development Fund(PTDF),Nigeria,and the Training Program for Outstanding Young Teachers in Universities in Guangdong Province(Grant No.YQ2015116)Petrochemical Industry Transformation and Upgrad-ing Technology Innovation Public Service Platform in Maomning City(No.2016B020211002)+1 种基金the National Natural Science Foundation of China(Grant No.21403038)the Natural Science Foundation of Guangdong Province(Grant No.2015A030313892).
文摘Catalysts for the desulfurization of gasoline samples were synthesized via the immobilization of well-dispersed phosphotungstic acid(HPW)on Mobil compo-sition of matter-twenty-two(MWW)zeolite.Characteriza-tion results indicated that these catalysts possess a mesoporous structure with the retention of the Keggin structure of immobilized HPW.Relevant reaction para-meters influencing sulfur removal were systematically investigated,including HPW loading,catalyst dosage,temperature,initial S-concentration,molar ratio of oxidant to sulfide(O/S),volume ratio of MeCN to model oil(Ext./oil),and sulfide species.The 40 wt-%HPW/MWW catalyst exhibited the highest catalytic activity with 99.6%dibenzothiophene sulfur removal from prepared samples.The 40 wt-%HPW/MWW catalyst was recycled four times and could be easily regenerated.Finally,as an exploratory study,straight-run-gasoline and fluid catalytic cracking gasoline were employed to accurately evaluate the desulfurization performance of 40 wt-%HPW/MWW.Our research provides new insights into the development and application of catalysts for desulfurization of gasoline.
