Akademik Veri Yönetim Sistemi
Journal of Nanoparticle Research, cilt.28, sa.3, 2026 (SCI-Expanded, Scopus)
The increasing demand for clean and sustainable energy has highlighted hydrogen as an attractive energy carrier due to its zero-emission combustion. Ammonia borane (H₃NBH₃; AB) is a promising hydrogen storage material owing to its high hydrogen content and efficient hydrogen release via catalytic methanolysis. In this study, ruthenium(0) nanoparticles (Ru(0) NPs) supported on natural clinoptilolite zeolite (NCZ) (Ru(0)@NCZ) were developed as a highly efficient and cost-effective catalyst for hydrogen production from AB methanolysis. The Ru(0)@NCZ catalyst was synthesized via a simple and reproducible impregnation-reduction method, offering advantages for potential large-scale applications, while the use of natural clinoptilolite provides economic and environmental benefits. Comprehensive characterization (FTIR, ICP-OES, SEM-EDX, TEM/HRTEM, XRD, XPS, and N₂ adsorption–desorption) confirmed the successful formation of uniformly dispersed metallic Ru(0) NPs with an average size of 1.01 ± 0.34 nm. The catalyst exhibited outstanding catalytic performance, achieving a high initial turnover frequency (TOFinital) of 2033 h−1. Moreover, Ru(0)@NCZ showed excellent durability, retaining 92% of its initial activity after five consecutive cycles while consistently producing 3.0 mol H₂ per mol AB with > 99% conversion efficiency. Kinetic studies revealed a low activation energy (Ea ₌ 13.30 kJ mol−1), indicating efficient hydrogen generation under mild conditions. These results demonstrate that Ru(0)@NCZ is a highly active, stable, and sustainable catalyst for hydrogen production from AB methanolysis.