Work

Strong metal‒support interaction modulates catalytic activity of Ru nanoparticles on Gd2O3 for efficient ammonia decomposition

Year: 2024

Type: article

Abstract: Exploration of efficient Ru-based catalysts is significant for advancing the production of hydrogen from ammonia decomposition, which depends predominantly on the rational regulation of the metal-support interaction of Ru-based catalysts. Herein, highly dispersed Ru nanoparticles (NPs) on Gd 2 O 3 (Ru/Gd 2 O 3 ) are developed and applied for the NH 3 decomposition reaction. By varying the reduction temperature, the activity of the Ru/Gd 2 O 3 catalyst can be remarkably improved. Characterization results reveal that the enhanced activity is associated with the strong metal‒support interaction (SMSI) induced formation of Gd 2 O 3 overlayer on the Ru NPs. With a relatively low reduction temperature, the exposed Ru NPs possess relatively low activity toward NH 3 decomposition. After high temperature activation treatment, the Gd 2 O 3 overlayer coated Ru NPs show much enhanced intrinsic activity than that of the exposed Ru NPs. This study brings a facile strategy to modulate the catalytic performance of oxide supported Ru catalysts by regulating the SMSI of catalysts.

Source: iScience

DOI: 10.1016/j.isci.2024.110931

Authors: Xiaohua Ju, Lin Liu, Xiaoyan Xu, Jiemin Wang, Teng He, Ping Chen