中国化学工程学报(英文版)
中國化學工程學報(英文版)
중국화학공정학보(영문판)
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2013年
8期
860-866
,共7页
黎俊波%刘习文%曹灿灿%郭嘉%潘志权
黎俊波%劉習文%曹燦燦%郭嘉%潘誌權
려준파%류습문%조찬찬%곽가%반지권
oxidative desulfurization%silica gel supported complex%V complex%tert-butyl hydroperoxide
In this manuscript, a series of catalyst SGn-[VVO2-PAMAM-MSA] (SG=silica gel, PAMAM=poly-amidoamine, MSA=5-methyl salicylaldehyde, n=0, 1, 2, 3) was prepared and their structures were fully charac-terized by Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray photoelec-tron spectroscopy (XPS) and inductive coupled plasma emission spectrometer (ICP) etc. XPS revealed that the metal V and SGn-PAMAM-MSA combined more closely after the formation of Schiff base derivatives. Their cata-lytic activities for oxidation of dibenzothiophene were evaluated using tert-butyl hydroperoxide as oxidant. The results showed that the catalyst SG2.0-[VVO2-PAMAM-MSA] presented good catalytic activity and recycling time. Mean-while, the optimal condition for the catalytic oxidation of SG2.0-[VVO2-PAMAM-MSA] was also investigated, which showed that when the oxidation temperature was 90 °C, time was 60 min, the O/S was 3︰1, and the mass content of catalyst was 1%, the rate of desulfurization could reach 85.2%. Moreover, the catalyst can be recycled several times without significant decline in catalytic activity.