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Application of BICOVOX catalyst for hydrogen production from ethanol

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Abstract

Catalytic activity of cobalt-doped bismuth vanadate [Bi4(V0.90Co0.10)2O11−δ ; BICOVOX] powder, prepared by a solution combustion synthesis and calcined at 800 °C (BICOVOX-800), for hydrogen production using low-temperature steam reforming of ethanol, has been reported in this paper. The effects of reaction temperature (250–400 °C) and feed concentration (H2O/EtOH = 2.5:1 and 23:1 mol ratio) on the steady-state ethanol conversion and selectivity of H2, CO2, CO, and CH4 have been investigated (up to 30 h). It is observed that with an increase in reaction temperature and H2O/EtOH mole ratio, H2 and CO2 selectivity increases and CO and CH4 selectivity decreases. The maximum H2 selectivity and ethanol conversion are observed to be 63 and 88%, respectively, for H2O/EtOH = 23:1 mol ratio at 400 °C. The XRD results show that the fresh BICOVOX-800 has pure γ-phase and is highly crystalline. The used catalyst (more than 150 h total) is detected to have less crystallinity and to partially decompose into Bi2O3 and BiVO4 phases.

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Acknowledgements

The authors acknowledge BITS Pilani for this work. The authors gratefully thank the Department of Physics, BITS Pilani, Rajasthan, India, for XRD characterization, Department of Chemical Engineering, BITS Pilani for providing experimental facility and support of this research. The first author (S. Sharma) would also like to thank DST for providing INSPIRE scholarship.

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Correspondence to B. Roy.

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Sharma, S., Patil, B., Pathak, A. et al. Application of BICOVOX catalyst for hydrogen production from ethanol. Clean Techn Environ Policy 20, 695–701 (2018). https://doi.org/10.1007/s10098-017-1394-1

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  • DOI: https://doi.org/10.1007/s10098-017-1394-1

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