TiOx/Pd interfacial catalysts with controllable geometrical/electronic effects for industrial H2O2 production

Author:

Zhang Fengyu1,Miao Chenglin1,Wang Qian1,Gao Mingyu1,Li Dianqing12,Feng Junting12ORCID

Affiliation:

1. State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing China

2. Beijing Engineering Center for Hierarchical Catalysts Beijing University of Chemical Technology Beijing China

Abstract

AbstractAiming at controllable modulating metal−support interactions to achieve an optimal trade‐off of geometric/electronic effect in supported catalysts, we developed a reliable approach based on the typical 2D material layered double hydroxide (LDHs). A series of TiOx/Pd/MgTiAl‐MMO‐X catalysts with adjustable interfacial effect were acquired by loading PdCl42− precursor and further preciously adjusting the topological reduction temperature, based on the regulatory effect of Mg–O–Ti–O–Al–O structure in the support on the reducibility and mobility of Ti4+. The catalysts with semi‐continuous and accessible TiOx/Pd interface, confirmed by AC‐HAADF‐STEM, CO chemisorption, XPS, exhibit much higher H2O2 yield than the catalyst with over‐encapsulation structure. The TiOx/Pd/MgTiAl‐MMO‐450 catalysts possessed optimal geometric and electronic structure exhibited the highest activity with TOF of 9.75 s−1, excellent H2O2 yield of 11.4 g/L, as well as good stability.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Publisher

Wiley

Subject

General Chemical Engineering,Environmental Engineering,Biotechnology

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