铂金
方解石
催化作用
沸石
选择性
化学
区域选择性
分子
组合化学
无机化学
有机化学
作者
Qiang Chen,Pai Peng,Ganjun Yang,Yanzhi Li,Mengxi Han,Yaozong Tan,Chengxi Zhang,Junwen Chen,Kun Jiang,Lei Liu,Chenliang Ye,Enhui Xing
标识
DOI:10.1002/anie.202205978
摘要
Abstract It is challenging to establish single metal atoms with a uniform coordination environment at targeted sites of a zeolite. In this study, single platinum atoms were selectively encaged in the six‐membered rings of sodalite (SOD) cages within Y zeolite using a template‐guiding strategy. During the in situ synthesis process, template molecules were designed to occupy supercages and thereby force coordinated platinum species into SOD cages. Subsequent control of the post‐treatment conditions yielded the Y zeolite with selectively encaged single platinum atoms, denoted Pt@Y‐SOD. The Pt@Y‐SOD catalyst had good stability and excellent catalytic selectivity in the semihydrogenation reaction, and it exhibited interesting thiophene and carbon monoxide resistance in this transformation because interactions with these poisons are weakened by the configuration of the encaged single platinum atoms.
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