Trimodel hierarchical yolk-shell porous materials TS-1@mesocarbon：Synthesis and catalytic application
Trimodel hierarchical yolk-shell porous materials TS-1@mesocarbon：Synthesis and catalytic application
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DOI：
10.1016/j.cclet.2013.04.004
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发表时间：
2013-07
影响因子：
9.1
通讯作者：
Honggen Peng;Xiaohong Li;Le Xu;Peng Wu
中科院分区：
文献类型：
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作者：
Honggen Peng;Xiaohong Li;Le Xu;Peng Wu
以TS-1@mesoSiO2为硬模板剂，蔗糖为碳源，有机碱四丙基氢氧化铵（TPAOH）为硅刻蚀剂，成功合成了由TS-1核和介孔碳壳组成的三峰分级结构卵黄壳材料（YS-TS-1@MC）。所得的YS-TS-1@MC含有TS-1核中的微孔（0.51nm）、碳壳中的中孔（2.9nm）以及TS-1碎片之间的空隙或堆叠孔（TS-1晶间中孔，约18.4nm）。在严格的刻蚀条件下，TS-1核的晶体结构得到了很好的保留。YS-TS-1@MC作为钯纳米粒子（PdNPs）或Rh（OH）x物种的良好载体，为包括环氧丙烷或酰胺的一锅法合成在内的串联反应提供了有效的双功能催化剂。
Trimodal hierarchical yolk–shell materials consisting of TS-1 core and mesoporous carbon shell (YS-TS-1@MC) was successfully synthesized by using TS-1@mesosilica as hard template, sucrose as carbon source and organic base tetrapropylammonium hydroxide (TPAOH) as silica etching agent. The resultant YS-TS-1@MC contains the micropores (0.51nm) in TS-1 core, the mesopores (2.9nm) in carbon shell as well as a void or a stack pore between TS-1 fragements (TS-1 intercrystal mesopores, ∼18.4nm). Under the rigorous etching conditions, the crystalline structure of TS-1core was well retained. The YS-TS-1@MC served as a good support for palladium nano-particles (Pd NPs) or Rh(OH)x species, giving rise to efficient bifunctional catalysts for the tandem reactions including one-pot synthesis of propylene oxide or amides.