10.1021/acscatal.7b04327.s001
Houlin Wang
Houlin
Wang
Minghan Liu
Minghan
Liu
Yue Ma
Yue
Ma
Ke Gong
Ke
Gong
Wei Liu
Wei
Liu
Rui Ran
Rui
Ran
Duan Weng
Duan
Weng
Xiaodong Wu
Xiaodong
Wu
Shuang Liu
Shuang
Liu
Simple Strategy Generating Hydrothermally Stable Core–Shell
Platinum Catalysts with Tunable Distribution of Acid Sites
American Chemical Society
2018
hydrothermal stability
acid sites
C 3 H 8 oxidation
acidic Pt catalyst
strategy
N 2 selectivity
platinum catalysts
core
tunable structure
SiO 2 alumination
Acid Sites
mechanism exploration
Tunable Distribution
2018-02-22 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Simple_Strategy_Generating_Hydrothermally_Stable_Core_Shell_Platinum_Catalysts_with_Tunable_Distribution_of_Acid_Sites/5930587
There are critical needs for platinum
catalysts with high hydrothermal
stability and tunable Pt–acid site proximity, which could not
be achieved via traditional methods. Here, we describe a simple strategy
(SiO<sub>2</sub> alumination combined with controlled removal of the
capping agent) through which Pt-based core–shell catalysts
that tolerant both high-temperature steam and boiling water can be
obtained. More importantly, this strategy allows precise control of
the distance between acid sites and Pt; thus, the interfacial electronic
interaction can be cut off without prohibiting the spillover of adsorbed
species. This tunable structure not only helps to unravel the mechanism
of C<sub>3</sub>H<sub>8</sub> oxidation over acidic Pt catalyst but
also increases the N<sub>2</sub> selectivity for NO<sub><i>x</i></sub> selective catalytic reduction. Given that the component of
both the “core” and “shell” can be changed
easily, this strategy should have wide application in mechanism exploration
as well as the development of catalysts for various reactions.