Most of the industrial and environmental catalytic reactions are operated at high temperature for a long time, and the sintering of the active centers is the main factor leading to catalysts deactivation, especially for noble metal catalysts. Herein we develop a dual confinement (enhanced metal-oxide interaction and the porous shell confinement) strategy to prepare Pd–Sn pseudo solid solution and in situ embedded in microporous silica for the first time and showed superior catalytic performance for CO and propane total oxidation (two main vehicle emission gases), even stored more than 640 days.

中文翻译：

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在微孔二氧化硅中原位嵌入的假Pd-Sn固溶体具有显着的CO和丙烷氧化催化性能

大多数工业和环境催化反应长时间在高温下进行，而活性中心的烧结是导致催化剂失活的主要因素，特别是对于贵金属催化剂而言。本文中，我们开发了双重约束（增强的金属氧化物相互作用和多孔壳约束）策略，以制备Pd-Sn拟固溶体，并首次将其原位嵌入微孔二氧化硅中，并显示出对CO和丙烷总氧化的优异催化性能（两种主要的汽车排放气体），甚至可以存储640天以上。