Catalytic methanolysis and hydrolysis of hydrazine-borane with monodisperse Ru NPs@nano-CeO2 catalyst for hydrogen generation at room temperature. (21st May 2019)

• Record Type: Journal Article
• Authors: Karatas, Yasar; Gülcan, Mehmet; Sen, Fatih
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 26(2019)
• Page Start: 13432
• Page End: 13442
• Publication Date: 2019-05-21
• Subjects: Hydrazine-borane -- Hydrolysis -- Methanolysis -- Novel catalyst -- Ruthenium; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.04.012
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Herein, we report metal catalyzed methanolysis and hydrolysis of hydrazine-borane as a fast hydrogen generation system under mild conditions. To the best of our knowledge, this is the first report that a monodisperse Ru NPs@nano-CeO2 catalyst can achieve a complete conversion of N2 H4 BH3 to H2 with the assistance of both methanolysis and hydrolysis reactions. In order to achieve hydrolysis and methanolysis effectively, monodisperse Ru NPs@nano-CeO2 catalyst have been prepared by modifying the chemical reduction method which is a very simple and efficient method in room conditions. The synthesized Ru NPs@nano-CeO2 catalyst showed excellent catalytic activity, stability, and selectivity in the production of hydrogen by both hydrolysis and methanolysis of the hydrazine-borane. The results reported here also includes (i) identification of the prepared catalyst by using analytical techniques such as XRD, XPS, TEM, HR-TEM, (ii) determination of stoichiometry for methanolysis and hydrolysis reactions, (iii) determination of rate constants and laws for methanolysis and hydrolysis reactions, (iv) determination of kinetic parameters such as enthalpy, entropy and activation energy for methanolysis and hydrolysis reactions. Graphical abstract: Image 1 Highlights: Nano-CeO2 supported Ru NPs (Ru NPS@nano-CeO2 ) were successfully synthesized. Catalytic performance of the nanocatalyst was tested in the solvolysis of HB. The catalytic activity of Ru NPS@nano-CeO2 is 27.37 min. −1 for hydrolysis. And the catalytic activity of Ru NPS@nano-CeO2 is 41.05 min. −1 for methanolysis.