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Amino-functionalized seeds-induced synthesis of encapsulated [email protected] core-shell catalysts for size-selective hydrogenation
Catalysis Communications ( IF 3.4 ) Pub Date : 2018-02-15 , DOI: 10.1016/j.catcom.2018.02.002
Cun Liu , Lu Lin , Yi Cao , Haiou Liu , Yu Guo , Xiongfu Zhang

Silicalite-1 (S-1) encapsulated [email protected] ([email protected]) core-shell catalysts were prepared by using a seeds-induced growth strategy, including immobilization of Pd2+ on amino-functionalized S-1 seeds and regrowth of the S-1 zeolite. The microstructure and elemental composition of [email protected] core-shell catalysts were characterized by FE-SEM, TEM, XRD, XPS and ICP-AES. The results indicate Pd NPs are encapsulated and well dispersed in S-1 crystals and have a narrow size distribution of around 3.2 nm. This core-shell catalyst demonstrates excellent shape selectivity in the hydrogenation of alkenes compared with conventional Pd/S-1 obtained by directly loading Pd NPs on S-1 without regrowth.



中文翻译:

氨基官能化种子诱导的封装的[受电子邮件保护的]核-壳催化剂的合成,用于尺寸选择加氢

Silicalite-1(S-1)封装的[受电子邮件保护]([受电子邮件保护])核壳催化剂是通过种子诱导的生长策略制备的,包括将Pd 2+固定在氨基官能化的S-1种子上并使其再生长S-1沸石。用FE-SEM,TEM,XRD,XPS和ICP-AES对[电子邮件保护的]核壳催化剂的微观结构和元素组成进行了表征。结果表明,Pd NPs被封装并很好地分散在S-1晶体中,并具有约3.2 nm的窄尺寸分布。与通过将Pd NPs直接负载在S-1上而无再生长而获得的常规Pd / S-1相比,该核-壳型催化剂在烯烃的氢化中表现出优异的形状选择性。

更新日期:2018-02-15
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