Polyol-Intermediated Facile Synthesis of B₅-Site-Rich Ru-Based Nanocatalysts for CO_x-Free Hydrogen Production via Ammonia Decomposition.

ABSTRACT: Herein, a B₅-site-rich Ru/MgAl₂O₄ nanocatalyst for the production of CO_x-free hydrogen from ammonia (NH₃) is synthesized using the polyol method. The polyol method enables size-sensitive Ru-nanoparticle growth and controlled B₅-site formation on the catalyst by tuning the carbon-chain length of the polyol solvent used, obviating the use of a separate stabilizer and enhancing electron donation from Ru (with a high surface electron density) and π-back bonding. The Ru/MgAl₂O₄ (BG) catalyst synthesized using butylene glycol (a long-carbon-chain solvent) contains 2.5 nm Ru particles uniformly dispersed on its surface and abundant B₅ sites at (0 0 2)/(0 1 1). Moreover, the Ru/MgAl₂O

SUBMITTER: Kim KD 

PROVIDER: S-EPMC12019907 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature