催化作用
甲醇
锌
离解(化学)
X射线吸收光谱法
铜
无机化学
锆
格式化
纳米颗粒
化学
选择性
材料科学
化学工程
吸收光谱法
纳米技术
有机化学
物理化学
物理
工程类
量子力学
作者
Meng Yang,Jiafeng Yu,Anna Zimina,Bidyut Bikash Sarma,Lakshmi Pandit,Jan‐Dierk Grunwaldt,Ling Zhang,Hengyong Xu,Jian Sun
标识
DOI:10.1002/anie.202216803
摘要
Abstract Active Zn species in Cu‐based methanol synthesis catalysts have not been clearly identified yet due to their complex nature and dynamic structural changes during reactions. Herein, atomically dispersed Zn on ZrO 2 support is established in Cu‐based catalysts by separating Zn and Zr components from Cu (Cu−ZnZr) via the double‐nozzle flame spray pyrolysis (DFSP) method. It exhibits superiority in methanol selectivity and yield compared to those with Cu−ZnO interface and isolated ZnO nanoparticles. Operando X‐ray absorption spectroscopy (XAS) reveals that the atomically dispersed Zn species are induced during the reaction due to the strengthened Zn−Zr interaction. They can suppress formate decomposition to CO and decrease the H 2 dissociation energy, shifting the reaction to methanol production. This work enlightens the rational design of unique Zn species by regulating coordination environments and offers a new perspective for exploring complex interactions in multi‐component catalysts.
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