直接煅烧法制备二氧化钛及其氧化脱硫性能  

Preparation of Titanium Dioxide by Direct Calcination and Its Oxidative Desulfurization Performance

作　　者：周隆昌 刘汉林 李秀萍[1] 赵荣祥[1] Zhou Longchang;Liu Hanlin;Li Xiuping;Zhao Rongxiang(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2021年第5期17-22,共6页Journal of Liaoning Petrochemical University

基　　金：辽宁省自然科学基金指导计划项目(2019-ZD-0064)。

摘　　要：以硫酸钛为原料,通过马弗炉直接高温锻烧制备二氧化钛(TiO_(2))。采用FT-IR、XRD、UV-Vis、SEM技术对催化剂的结构进行表征。结果表明,直接煅烧法可以制备锐钛矿型二氧化钛,并将其应用于二苯并噻吩的氧化脱硫。以乙腈为萃取剂、二氧化钛为催化剂,考察了氧化法脱除模拟油中的二苯并噻吩。研究催化剂质量、反应温度、n(H_(2)O_(2))/n(S)、不同含硫化合物对脱硫效果的影响,并且对催化剂循环使用性能进行考察。在最优脱硫条件下,二苯并噻吩、4,6-二甲基二苯并噻吩、苯并噻吩和混合柴油的脱硫率分别为99.5%、35.6%、65.0%和53.4%。催化剂循环使用5次后,催化脱硫效果仍高达90.3%。Titanium sulfate was used as a raw material,and a titanium oxide(TiO_(2))was prepared by direct high-temperature calcination in a muffle furnace.FT-IR,XRD,UV-Vis,SEM were used to characterize the structure of the catalyst.The results show that the direct calcination method can prepare anatase titanium dioxide and apply it to the oxidative desulfurization of dibenzothiophene.Using acetonitrile as the extractant and titanium oxide as the catalyst,the oxidation method was used to remove dibenzothiophene from the simulated oil.The effects of catalyst dosage,reaction temperature,n(H_(2)O_(2))/n(S),and different sulfur compounds on the desulfurization effect were investigated,and the recycling performance of the catalyst was also investigated.Under the optimal desulfurization conditions,the desulfurization rates of dibenzothiophene,4,6-dimethyldibenzothiophene,benzothiophene,and mixed diesel are 99.5%,35.6%,65.0%,and 53.4%.After the catalyst was recycled five times,the catalytic desulfurization effect was still as high as 90.3%.

关 键 词：二氧化钛 氧化脱硫 硫酸钛 二苯并噻吩 

分 类 号：TE624[石油与天然气工程—油气加工工程]