N-hydroxyphthalimide anchored on hexagonal boron nitride as a metal-free heterogeneous catalyst for deep oxidative desulfurization  

作　　者：Lin-Jie Lu Pei-Wen Wu Jing He Ming-Qing Hua Yan-Hong Chao Ning Yang Lin-Lin Chen Wei Jiang Lei Fan Hong-Bing Ji Wen-Shuai Zhu 

机构地区：[1]School of Chemistry and Chemical Engineering,Institute for Energy Research,Jiangsu University,Zhenjiang,Jiangsu,212013,PR China [2]School of Pharmacy,Jiangsu University,Zhenjiang,Jiangsu,212013,PR China [3]Yangzhou University,Yangzhou,Jiangsu,225002,PR China [4]Fine Chemical Industry Research Institute,School of Chemistry,Sun Yat-sen University,Guangzhou,Guangdong,510275,PR China

出　　处：《Petroleum Science》2022年第3期1382-1389,共8页石油科学（英文版）

基　　金：the financial support from the National Key R&D Program of China(No.2017YFB0306504);National Natural Science Foundation of China(No.22008094,22178154 and 21878133);Chinese Postdoctoral Science Foundation(No.2019M651743,2020M671364 and 2020M673039);Natural Science Foundation of Jiangsu Province(No.BK20190852);Natural Science Foundation for Jiangsu Colleges and Universities(No.19KJB530005)

摘　　要：A metal-free N-hydroxyphthalimide/hexagonal boron nitride(NHPI/h-BN)catalytic system was developed for deep oxidative desulfurization(ODS)of fuel oils.Detailed experiments find that the heterogenization process of loading NHPI on h-BN not only benefits to the dispersion and utilization of NHPI,but also can significantly promote the catalytic performance.By employing NHPI/h-BN as the catalyst,azodiisobutyronitrile(AIBN)as the metal-free initiator,a 95%conversion of dibenzothiophene(DBT)can be acquired under the reaction conditions of 120°C and atmospheric pressure with molecular oxygen(O_(2))as oxidant.Moreover,the heterogenization is convenient for the regeneration of the catalyst with>94%DBT conversion after being recycled seven times.Characterizations illustrate that the promoted catalytic activity along with the regenerability originate from the interactions between NHPI and h-BN.The catalytic mechanism study shows that molecular oxygen is readily activated by the NHPI/h-BN to form a superoxide radical(O_(2)^(·-)),which oxidize DBT to DBTO2 for desulfurization.

关 键 词：N-HYDROXYPHTHALIMIDE Hexagonal boron nitride Oxidative desulfurization Heterogeneous catalysis 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]