The preparation of porous materials by the simple and low-cost methods is one of the hot topics in materials science.Here,the porous carbon-incorporated BN(P-CBN)was synthesized from the low-cost flour by a fermentati...The preparation of porous materials by the simple and low-cost methods is one of the hot topics in materials science.Here,the porous carbon-incorporated BN(P-CBN)was synthesized from the low-cost flour by a fermentation combined with freezedrying technology and ammonolysis.P-CBN-x samples not only maintain the pores of the fermented dough,but also produce abundant oxygen-containing boron species(B-OH,O-O and B-O).Due to the unique structural advantages,P-CBN-x catalysts exhibit remarkably better catalytic performance than bulk BN for the oxidative dehydrogenation of propane(ODHP)to produce olefins.Attractively,P-CBN-23 obtains high C_(3)H_(8 )conversion of 62.1%and olefin yield of 42.7%.In-situ DRIFTS experiments and DFT calculations demonstrate the B-OO-B species in P-CBN-x framework is the most active species for the C3H8activation and the B-O…O-B species can be readily regenerated by O_(2),thus promoting the conversion of propane to olefin.展开更多
基金financially supported by the major research projects of National Natural Science Foundation of China(92145301,91845201)National Natural Science Foundation of China(22002093,22002094)+3 种基金Liaoning Provincial Central Government Guides Local Science and Technology Development Funds(2022JH6/100100052)The Engineering Technology Research Center of Catalysis for Energy and Environment,Major Platform for Science and Technology of the Universities in Liaoning ProvinceLiaoning Province Key Laboratory for Highly Efficient Conversion and Clean Utilization of Oil and Gas Resourcesthe Engineering Research Center for Highly Efficient Conversion and Clean Use of Oil and Gas Resources of Liaoning Province。
文摘The preparation of porous materials by the simple and low-cost methods is one of the hot topics in materials science.Here,the porous carbon-incorporated BN(P-CBN)was synthesized from the low-cost flour by a fermentation combined with freezedrying technology and ammonolysis.P-CBN-x samples not only maintain the pores of the fermented dough,but also produce abundant oxygen-containing boron species(B-OH,O-O and B-O).Due to the unique structural advantages,P-CBN-x catalysts exhibit remarkably better catalytic performance than bulk BN for the oxidative dehydrogenation of propane(ODHP)to produce olefins.Attractively,P-CBN-23 obtains high C_(3)H_(8 )conversion of 62.1%and olefin yield of 42.7%.In-situ DRIFTS experiments and DFT calculations demonstrate the B-OO-B species in P-CBN-x framework is the most active species for the C3H8activation and the B-O…O-B species can be readily regenerated by O_(2),thus promoting the conversion of propane to olefin.
