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| CuPd/MgO for Efficient Catalytic Hydrogen Production from Formaldehyde Solution at Room Temperature |
| Author Name | Affiliation | E-mail | | HUANG Ming-Hao | School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China | | | LI Zhuo | School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China | | | DU Lei-Lei | School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China | | | JIN Zhi-Kang | School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China | | | LI Ren-Hong | School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China | lirenhong@zstu.edu.cn |
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| Abstract: The composite catalyst of CuPd alloy nanoparticles supported on MgO (CuPd/MgO) was prepared by an impregnation reduction method. CuPd/MgO showed excellent catalytic performance during formaldehyde reforming for hydrogen production at room temperature in the air. The turnover frequency (TOF) of CuPd/MgO was as high as 812.6 h-1, which was respectively 2.3 times and 23 times higher than that of Cu/MgO (TOF=356.7 h-1) and Pd/MgO (TOF=34.8 h-1) under the same reaction conditions. Based on the experimental observations and characterization results, we found that a strong metal support interaction (SMSI) between CuPd alloy nanoparticles and MgO support enriched with defects on the surface was present in CuPd/MgO. This interaction was conducive to the transfer and recombination of electrons on the catalyst, greatly promoting the adsorption, activation, and reduction of oxygen on the catalyst surface to form superoxide anion radical (·O2-). The ·O2- combined with the proton generated by the C—H bond breaking of formaldehyde to form superoxide radical (·OOH). The hydrogen radical (·H) dissociated from water molecules in the reaction system continuously combined with ·OOH to generate hydrogen and oxygen, leading to the generation of hydrogen and the regeneration of oxygen. |
| Keywords: CuPd alloy MgO formaldehyde hydrogen strong metal-support interactions |
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| HUANG Ming-Hao,LI Zhuo,DU Lei-Lei,JIN Zhi-Kang,LI Ren-Hong.CuPd/MgO for Efficient Catalytic Hydrogen Production from Formaldehyde Solution at Room Temperature[J].Chinese Journal of Inorganic Chemistry,2022,38(12):2452-2458. |
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