Bifunctional zeolites-silver catalyst enabled tandem oxidation of formaldehyde at low temperatures

Na Li, Bin Huang, Xue Dong, Jinsong Luo, Yi Wang, Hui Wang, Dengyun Miao, Yang Pan, Feng Jiao (), Jianping Xiao () and Zhenping Qu ()
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Na Li: Dalian University of Technology
Bin Huang: Dalian University of Technology
Xue Dong: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Jinsong Luo: University of Science and Technology of China
Yi Wang: Dalian University of Technology
Hui Wang: Dalian University of Technology
Dengyun Miao: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Yang Pan: University of Science and Technology of China
Feng Jiao: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Jianping Xiao: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Zhenping Qu: Dalian University of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Bifunctional catalysts with tandem processes have achieved great success in a wide range of important catalytic processes, however, this concept has hardly been applied in the elimination of volatile organic compounds. Herein, we designed a tandem bifunctional Zeolites-Silver catalyst that enormously boosted formaldehyde oxidation at low temperatures, and formaldehyde conversion increased by 50 times (100% versus 2%) at 70 °C compared to that of monofunctional supported silver catalyst. This is enabled by designing a bifunctional catalyst composed of acidic ZSM-5 zeolite and silver component, which provides two types of active sites with complementary functions. Detached acidic ZSM-5 activates formaldehyde to generate gaseous intermediates of methyl formate, which is more easily oxidized by subsequent silver component. We anticipate that the findings here will open up a new avenue for the development of formaldehyde oxidation technologies, and also provide guidance for designing efficient catalysts in a series of oxidation reactions.

Date: 2022
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DOI: 10.1038/s41467-022-29936-8

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