Phosphorus and nitrogen co-doped graphene for catalytic dehydrochlorination of 1,2-dichloroethane  

作　　者：Haonan Yu Xiaofeng Yang Hongbin Yang Jinming Xu Yanqiang Huang 

机构地区：[1]CAS Key Laboratory of Science and Technology on Applied Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第12期149-155,共7页中国化学工程学报（英文版）

基　　金：the Chinese Academy of Sciences Project for Young Scientists in Basic Research,China(YSBR-022);the National Natural Science Foundation of China,China(21925803);the Youth Innovation Promotion Association CAS,China.

摘　　要：A phosphorus and nitrogen co-doped graphene(PNG)was developed via a two-step pyrolysis approach through the intermedium of g-C_(3)N_(4) template and glyphosate as the phosphorus source,and was used for the catalytic dehydrochlorination of 1,2-dichloroethane(EDC)to vinyl chloride monomer(VCM)production.The characterization results indicate that a volcano relationship of surface area and surface properties with the usage of phosphorus precursor was observed,and the sample of PNG-900-6 possesses not only the thin film structure with enhanced surface area but also the smaller grain size of PNG attachments.Accordingly,such PNGs show a great improvement of catalytic performance in the dehydrochlorination of EDC,and the PNG-900-6 catalyst behaves the best with a 4-times higher activity than that on the nitrogen doped graphene(NG).It was also proved that the synergetic effect of the unique P-C coordination on the graphene to generate more quaternary nitrogen species was crucial in determining the catalytic performance of EDC conversion.Our results demonstrate that the phosphorus and nitrogen co-doped graphene offers many advantages in physical structure and chemical property,and are also great potential on the catalytic application in the dehydrochlorination of 1,2-dichloroethane.

关 键 词：Catalysis NANOMATERIALS FIXED-BED DEHYDROCHLORINATION Doped graphene 

分 类 号：TQ203.2[化学工程—有机化工]