Selective formation of acetate intermediate prolongs robust ethylene removal at 0 °C for 15 days

Mingyue Lin, Haifeng Wang, Takashi Takei, Hiroki Miura, Tetsuya Shishido, Yuhang Li, Jinneng Hu, Yusuke Inomata, Tamao Ishida, Masatake Haruta, Guangli Xiu () and Toru Murayama ()
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Mingyue Lin: East China University of Science and Technology
Haifeng Wang: Tokyo Metropolitan University
Takashi Takei: Tokyo Metropolitan University
Hiroki Miura: Tokyo Metropolitan University
Tetsuya Shishido: Tokyo Metropolitan University
Yuhang Li: East China University of Science and Technology
Jinneng Hu: East China University of Science and Technology
Yusuke Inomata: Kumamoto University
Tamao Ishida: Tokyo Metropolitan University
Masatake Haruta: Tokyo Metropolitan University
Guangli Xiu: East China University of Science and Technology
Toru Murayama: Tokyo Metropolitan University

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Efficient ethylene (C2H4) removal below room temperatures, especially near 0 °C, is of great importance to suppress that the vegetables and fruits spoil during cold-chain transportation and storage. However, no catalysts have been developed to fulfill the longer-than-2-h C2H4 removal at this low temperature effectively. Here we prepare gold-platinum (Au-Pt) nanoalloy catalysts that show robust C2H4 (of 50 ppm) removal capacity at 0 °C for 15 days (360 h). We find, by virtue of operando Fourier transformed infrared spectroscopy and online temperature-programmed desorption equipped mass spectrometry, that the Au-Pt nanoalloys favor the formation of acetate from selective C2H4 oxidation. And this on-site-formed acetate intermediate would partially cover the catalyst surface at 0 °C, thus exposing active sites to prolong the continuous and effective C2H4 removal. We also demonstrate, by heat treatment, that the performance of the used catalysts will be fully recovered for at least two times.

Date: 2023
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DOI: 10.1038/s41467-023-38686-0

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