Potassium Promoted Ferrocene/Graphene for Ammonia Synthesis  

作　　者：CHEN Ziquan YE Yihan PAN Xiulian BAO Xinhe 

机构地区：[1]State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,P.R.China [2]University of Chinese Academy of Sciences,Beijing 100049,P.R.China

出　　处：《Chemical Research in Chinese Universities》2024年第6期1004-1010,共7页高等学校化学研究（英文版）

基　　金：supported by the National Key Research and Development Program of China (No.2022YFA1604101).

摘　　要：Innovation of catalysts for mild condition ammonia synthesis promotes the carbon neutrality.Herein we report that ferrocene supported on reduced graphene oxide (rGO);promoted by alkali metal K is active catalyzing NH3 synthesis from N_(2)/H_(2) mixture.It exhibits a NH3 formation rate of 0.1 μmolNH_(3)·gc^(-1)·h^(-1) at 190 ℃ and increases by one order of magnitude to 2.1 μmolNH_(3)·gc^(-1)·h^(-1) at 230 ℃ and under 0.1 MPa.By contrast,both rGO promoted by K and ferrocene supported on rGO without K promotion are almost inactive under the same conditions.Density functional theory calculations validate the essential role of K promoter for facilitating the adsorption of N2 at the coordination unsaturated iron sites in the cyclopentadienylidene form.This finding could guide further development of metal complex catalysts for mild condition ammonia synthesis.

关 键 词：Ammonia synthesis Metal complex FERROCENE Green synthesis 

分 类 号：O64[理学—物理化学]