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Respected Speaker for CAT 2021 Conference - Ziyi Zhong
Ziyi Zhong
Guangdong Technion Israel Institute of Technology, China
Title : Catalysts for low-temperature catalytic oxidations using molecular oxygen

Abstract:

Catalytic oxidation processes/technologies are widely applied in the chemical industry and many emission control processes. In these oxidation reactions, employing molecular oxygen (O2) as the oxidant is the most environmentally benign approach, in which activation of O2 by catalysts to obtain the desired active oxygen species is crucial. Furthermore, how to develop catalysts workable under mild reaction conditions is a big challenge. In this work, we report the preparation of various supported mono- and bimetallic catalysts. These catalysts are used for the oxidation reactions of the photo-degradation of methyl orange (MO) in water under visible light, the catalytic wet air oxidation (CWAO) of dyes in wastewaters, preferential oxidation (PROX) of CO in H2-rich gas mixtures and room temperature catalytic removal of formaldehyde (HCHO) in air. It was found that some bimetallic catalysts showed better capability for oxygen activation and catalytic oxidations than the monometallic counterparts. The catalyst structures and the reaction mechanism were investigated in detail. The results show some supported bimetallic catalysts are workable for a number of oxidation reactions at quite low temperatures with high catalytic efficiencies.

Biography:

Prof. Ziyi Zhong works on environmental catalysis; he received his Ph.D. in 1995 in Nanjing University, and did his postdoc research at Bar-Ilan University, the University of Washington at Seattle, and National University of Singapore, respectively; he worked in A*STAR in Singapore for 16 years; since 2018, he joined Guangdong Technion Israel Institute of Technology (GTIIT) as a full professor. He has published ca. 200 research articles in SCI journals.

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