化学
异构化
催化作用
纳米孔
纳米材料
共沉淀
纳米颗粒
纳米技术
选择性
离解(化学)
壳体(结构)
化学工程
组合化学
无机化学
有机化学
材料科学
工程类
复合材料
作者
Takato Mitsudome,Masaaki Yamamoto,Zen Maeno,Tomoo Mizugaki,Koichiro Jitsukawa,Kiyotomi Kaneda
摘要
We report a facile synthesis of new core-Au/shell-CeO2 nanoparticles (Au@CeO2) using a redox-coprecipitation method, where the Au nanoparticles and the nanoporous shell of CeO2 are simultaneously formed in one step. The Au@CeO2 catalyst enables the highly selective semihydrogenation of various alkynes at ambient temperature under additive-free conditions. The core–shell structure plays a crucial role in providing the excellent selectivity for alkenes through the selective dissociation of H2 in a heterolytic manner by maximizing interfacial sites between the core-Au and the shell-CeO2.
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