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Preparation of HPW@UiO-66 catalyst with defects and its application in oxidative desulfurization
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2020-09-21 , DOI: 10.1016/j.cej.2020.127062
Yuling Ma , Airong Li , Cheng Wang , Xingbo Ge

Phosphotungstic acid (H3PW12O40, HPW) exhibits a good desulfurization performance towards the oxidative desulfurization (ODS) of oil-derived fuels. However, it presents two drawbacks: a small specific surface area and poor recovery. In this work, HPW was loaded on the support UiO-66 with a stable structure and large specific surface area, and a family of HPW@UiO-66 catalysts was prepared. Based on the structure and property analyses of powder FT-IR, ICP-OES, XRD, SEM, TG and BET, 0.5-HPW@UiO-66 with defects possessed a high crystallinity, regular morphology, stable structure and dispersed HPW clusters. The removal efficiency of DBT reached 100% and was maintained at 94.70% after 12 times of repeated use under the optimal reaction conditions. The results showed that the catalytic performance of HPW@UiO-66 catalyst for model oil desulfurization was improved when the defects existed.



中文翻译:

缺陷HPW @ UiO-66催化剂的制备及其在氧化脱硫中的应用

磷钨酸(H 3 PW 12 O 40,HPW)对源自石油的燃料的氧化脱硫(ODS)表现出良好的脱硫性能。但是,它具有两个缺点:比表面积小和回收率差。在这项工作中,将HPW负载在具有稳定结构和大比表面积的载体UiO-66上,并制备了一系列HPW @ UiO-66催化剂。根据粉末FT-IR,ICP-OES,XRD,SEM,TG和BET的结构和性能分析,具有缺陷的0.5-HPW@UiO-66具有较高的结晶度,规则的形貌,稳定的结构和分散的HPW团簇。在最佳反应条件下重复使用12次后,DBT的去除效率达到100%,并保持在94.70%。

更新日期:2020-09-21
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