Robertson Jamie, Bandosz Teresa J
Department of Chemistry, The City College of New York, 138th Street and Convent Avenue, New York, NY 10031, USA.
J Colloid Interface Sci. 2006 Jul 1;299(1):125-35. doi: 10.1016/j.jcis.2006.02.011. Epub 2006 Apr 5.
A new titanium(IV) oxide-hectorite nanofilm photocatalyst was prepared on quartz slides. It was evaluated in the photooxidation of dibenzothiophene (DBT) in nonpolar organic solution (tetradecane), as a model for diesel fuel. A removal regimen was developed consisting of catalytic photooxidation followed by adsorption of products on silica gel. Photooxidation of DBT was performed with and without catalyst, at 254 and 300 nm. Comparison was made with a commercially available TiO(2) catalyst, Degussa P25. The catalyst was analyzed by nitrogen adsorption, XRD, SEM, and TGA-DTA. DBT concentrations were measured by HPLC and UV spectrophotometry. Preliminary qualititative analysis of products was performed by UV and HPLC. Results indicated that the outlined process was effective in reducing sulfur levels to below 10 ppm sulfur.
在石英载玻片上制备了一种新型的二氧化钛-锂皂石纳米薄膜光催化剂。以柴油燃料的模型——非极性有机溶液（十四烷）中的二苯并噻吩（DBT）的光氧化反应对其进行了评估。开发了一种去除方案，包括催化光氧化，然后将产物吸附在硅胶上。在有催化剂和无催化剂的情况下，于254和300 nm波长下进行DBT的光氧化反应。与市售的TiO₂催化剂Degussa P25进行了比较。通过氮气吸附、XRD、SEM和TGA-DTA对催化剂进行了分析。通过HPLC和紫外分光光度法测量DBT浓度。通过紫外和HPLC对产物进行了初步定性分析。结果表明，所述方法能有效地将硫含量降低至10 ppm以下。
