祝贺刘占凯等同学的文章
“Auto-accelerated dehydrogenation of alkane assisted by in-situ formed olefins over boron nitride under aerobic conditions”
被 Nat. Commun. 接受发表！
Zhankai Liu, Ziyi Liu, Jie Fan, Wen-Duo Lu, Fan Wu, Bin Gao, Jian Sheng, Bin Qiu, Dongqi Wang, An-Hui Lu*. Auto-accelerated dehydrogenation of alkane assisted by in-situ formed olefins over boron nitride under aerobic conditions. Nat. Commun., 2023, Accepted.
Abstract
Oxidative dehydrogenation (ODH) of alkane over boron nitride (BN) catalyst exhibits high olefin selectivity as well as a small ecological carbon footprint. Here we report an unusual phenomenon that the in-situ formed olefins under reactions were in turn actively accelerating parent alkane conversion over BN by interacting with hydroperoxyl and alkoxyl radicals and generating reactive species which promoted oxidation of alkane and olefin formation, through feeding a mixture of alkane and olefin and DFT calculations. The isotope tracer studies revealed the cleavage of C-C bond in propylene when co-existing with propane, directly evidencing the deep-oxidation of olefins occurred in the ODH reaction over BN. Furthermore, enhancing the activation of ethane by the in-situ formed olefins from propane was successfully realized at lower temperature by co-feeding alkane mixture strategy. This work unveiled the realistic ODH reaction pathway over BN and provided an insight into efficiently producing olefins.
