Ordered Mesoporous CeO
<sub>2</sub>
‐supported Ag as an Effective Catalyst for Carboxylative Coupling Reaction Using CO
<sub>2</sub>
作者:Xiao Zhang、Dingkun Wang、Meizan Jing、Jian Liu、Zhen Zhao、Guanhua Xu、Weiyu Song、Yuechang Wei、Yuanqing Sun
DOI:10.1002/cctc.201900039
日期:2019.4.18
calculations indicate that Ag nanoparticles supported on M−CeO2 could facilitate the formation of oxygen vacancies, which result in higher CO2 adsorption capacity. With the most oxygen vacancies and the well‐dispersed Ag active species, Ag (3.12 %)/M−CeO2 exhibits high efficiency for the carboxylative coupling of terminal alkynes, chloride compounds and CO2 under mild reaction conditions (60 °C, 0.5 MPa), affording
Ag /中孔CeO 2(Ag / M-CeO 2)催化剂是通过气体鼓泡辅助膜还原(GBMR)方法合成的,并通过XRD,ICP-OES,N 2吸附-解吸,XPS,拉曼光谱,TEM, HRTEM,HAADF‐STEM和CO 2 ‐ TPD。Ag / M-CeO 2催化剂具有均匀的介孔结构,较大的表面积和氧空位,从而促进了Ag纳米粒子的分散。密度泛函理论(DFT)计算表明,负载在M-CeO 2上的Ag纳米颗粒可以促进氧空位的形成,从而导致较高的CO 2吸附能力。Ag(3.12%)/ M-CeO 2具有最大的氧空位和良好分散的Ag活性物质,在温和的反应条件下(60°C,0.5),对末端炔烃,氯化物和CO 2的羧基偶联反应表现出很高的效率。MPa),以良好的收率提供了多种功能化的2-链烷酸酯。