Hydrogen spillover assisted by oxygenate molecules over nonreducible oxides

• DOI: 10.1038/s41467-022-29045-6
• Publication Date: 2022-03-18T11:12:28Z
• Authors: Mingwu Tan; Yanling Yang; Ying Yang; Jiali Chen; Zhaoxia Zhang; Gang Fu; Jingdong Lin; Shaolong Wan; Shuai Wang; Yong Wang
• Keywords: Hydrogen spillover; Oxygenate; Bimetallic strip

Spontaneous migration of atomic hydrogen species from metal particles to the surface their support, known as spillover, has been claimed play a major role in catalytic processes involving hydrogen. While this phenomenon is well established on reducible oxide supports, its realization much more commonly used non-reducible oxides still challenged. Here we present general strategy enable effective spillover over SiO2 with aid gaseous organic molecules containing carbonyl group. By using hierarchically-porous-SiO2-supported bimetallic Pt-Fe catalysts Pt nanoparticles exclusively deposited into micropores, demonstrate that activated generated sites within micropores can be readily transported by these oxygenate Fe located macropores, leading significantly accelerated hydrodeoxygenation rates latter sites. This finding provides molecule-assisted approach rational design and optimization multifunctional heterogeneous catalysts, reminiscent molecular coenzymes bio-catalysis.