Strong Metal-Support Interactions Achieved by Hydroxide-to-Oxide Support Transformation for Preparation of Sinter-Resistant Gold Nanoparticle Catalysts
Strong Metal-Support Interactions Achieved by Hydroxide-to-Oxide Support Transformation for Preparation of Sinter-Resistant Gold Nanoparticle Catalysts
复制标题
通过氢氧化物到氧化物载体转化实现强金属-载体相互作用，用于制备抗烧结金纳米粒子催化剂
DOI：
10.1021/acscatal.7b01947
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发表时间：
2017-11-01
期刊：
影响因子：
12.9
通讯作者：
Xiao, Feng-Shou
中科院分区：
文献类型：
--
作者：
Wang, Liang;Zhang, Jian;Xiao, Feng-Shou
强金属载体相互作用（SMSI）是众所周知的，但对于制备负载型金属纳米颗粒催化剂至关重要，这种催化剂通常通过恶劣条件下的还原和氧化发生。在这里，我们描述了在不进行还原和氧化的情况下构建 SMSI 的示例，其中关键是采用氢氧化物到氧化物的支持转化。氧化物对Au纳米颗粒的覆盖、电子相互作用以及催化剂CO吸附测试的变化与经典SMSI相同。由于SMSI在Au纳米粒子上具有氧化物屏障，负载型Au催化剂在高温下具有抗烧结性，这有利于长寿命反应，其性能优于传统的负载型催化剂。
The strong metal support interactions (SMSI) are well-known but crucial for preparation of supported metal nanoparticle catalysts, which generally occur by reduction and oxidation under harsh conditions. Here, we delineate the example of constructing SMSI without reduction and oxidation, where the key is to employ a hydroxide-to-oxide support transformation. The covering of Au nanoparticles by oxides, electronic interaction, and changes in CO adsorption tests of the catalyst are identical to those of the classic SMSI. Owing to the SMSI with oxide barriers on the Au nanoparticles, the supported Au catalysts are sintering-resistant at high temperatures, which benefit long-life reactions, outperforming the conventional supported catalysts.