Dipole Coupling Accelerated H2O Dissociation by Magnesium-Based Intermetallic Catalysts

Guan，Haotian1,2; Liu，Yijia3; Hu，Xinmeng3; Wu，Jiazhen3; Ye，Tian Nan4; Lu，Yangfan1,2; Hosono，Hideo5; Li，Qian1,2; Pan，Fusheng1,2

2024

10.1002/anie.202400119

Angewandte Chemie - International Edition   影响因子和分区

1433-7851

1521-3773

The water (HO) dissociation is critical for various HO-associated reactions, including water gas shift, hydrogen evolution reaction and hydrolysis corrosion. While the d-band center concept offers a catalyst design guideline for HO activation, it cannot be applied to intermetallic or main group elements-based systems because Coulomb interaction was not considered. Herein, using hydrolysis corrosion of Mg as an example, we illustrate the critical role of the dipole of the intermetallic catalysts for HO dissociation. The HO dissociation kinetics can be enhanced using MgMe (Me=Co, Ni, Cu, Si and Al) as catalysts, and the hydrogen generation rate of MgNi-loaded Mg reached 80 times as high as Ni-loaded Mg. The adsorbed HO molecules strongly couple with the Mg−Me dipole of MgMe, lowering the HO dissociation barrier. The dipole-based HO dissociation mechanism is applicable to non-transition metal-based systems, such as MgSi and MgAl, offering a flexible catalyst design strategy for controllable HO dissociation.

Catalytic mechanism Dipole Hydrolysis corrosion Intermetallic catalysts Magnesium

SCI ; EI

英语

其他

CHEMISTRY

2-s2.0-85184679336

Scopus

1.College of Materials Science and Engineering,National Engineering Research Center for Magnesium Alloys,National Key Laboratory of Advanced Casting Technologies,Chongqing University,Chongqing,400045,China
2.Chongqing Institute of New Energy Storage Materials and Equipment,Chongqing,401135,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Frontiers Science Center for Transformative Molecules,School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China
5.MDX Research Center for Element Strategy,Tokyo Institute of Technology,Yokohama,4259 Nagatsuta, Midori-ku,226-8503,Japan

Guan，Haotian,Liu，Yijia,Hu，Xinmeng,et al. Dipole Coupling Accelerated H2O Dissociation by Magnesium-Based Intermetallic Catalysts[J]. Angewandte Chemie - International Edition,2024,63(11).

Guan，Haotian.,Liu，Yijia.,Hu，Xinmeng.,Wu，Jiazhen.,Ye，Tian Nan.,...&Pan，Fusheng.(2024).Dipole Coupling Accelerated H2O Dissociation by Magnesium-Based Intermetallic Catalysts.Angewandte Chemie - International Edition,63(11).

Guan，Haotian,et al."Dipole Coupling Accelerated H2O Dissociation by Magnesium-Based Intermetallic Catalysts".Angewandte Chemie - International Edition 63.11(2024).