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A remarkable Mo doped Ru catalyst for hydrogen generation from sodium borohydride: the effect of Mo addition and estimation of kinetic parameters

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Abstract

At present, carbon nanotube supported monometallic Ru at 3 wt% Ru loading (3% Ru/CNT) per gram support and bimetallic RuMo at 3 wt% Ru loading per gram support (3% Ru-Mo/CNT) at varying Ru:Mo atomic ratios are synthesized via sodium borohydride (NaBH4) reduction method to investigate their performance towards NaBH4 hydrolysis. These monometallic Ru/CNT and bimetallic Ru:Mo/CNT catalysts prepared at varying Ru:Mo atomic ratios are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy-energy dispersive X-ray analysis (SEM–EDX), and transmission electron microscopy (TEM). Characterization results reveal that Mo addition to Ru alters the electronic state of the catalysts. The NaOH concentration, the amount of catalyst, the NaBH4 concentration and the temperature parameters that affect the hydrolysis rate of this synthesized and developed catalyst were examined. The kinetic calculations of these parameters related to the order of the reaction were determined. Under optimum conditions catalyst hydrogen production rate was found to be 82,758.43 ml H2 g−1cat min−1. The reaction order (n) and activation energy (Ea) are determined as 0.42 and 35.11 kJ mol−1. Ru:Mo/CNT catalyst is a novel and promising catalyst for hydrogen generation from NaBH4.

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Authors and Affiliations

  1. Department of Chemical Engineering, Faculty of Engineering, Van Yuzuncu Yil University, 65000, Van, Turkey

    Tulin Avci Hansu, Aykut Caglar & Hilal Kivrak

  2. Department of Chemical Engineering, Faculty of Engineering, Siirt University, 56100, Siirt, Turkey

    Tulin Avci Hansu & Omer Sahin

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  1. Tulin Avci Hansu
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  2. Omer Sahin
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  3. Aykut Caglar
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  4. Hilal Kivrak
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Correspondence to Tulin Avci Hansu.

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Avci Hansu, T., Sahin, O., Caglar, A. et al. A remarkable Mo doped Ru catalyst for hydrogen generation from sodium borohydride: the effect of Mo addition and estimation of kinetic parameters. Reac Kinet Mech Cat 131, 661–676 (2020). https://doi.org/10.1007/s11144-020-01884-8

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