Methanol Steam Reforming Promoted by Molten Salt-Modified Platinum on Alumina Catalysts

Kusche MM, Agel F, Ní Bhriain N, Kaftan A, Laurin M, Libuda J, Wasserscheid P (2014)


Publication Status: Published

Publication Type: Journal article

Publication year: 2014

Journal

Publisher: Wiley-VCH Verlag

Book Volume: 7

Pages Range: 2516-2526

URI: http://onlinelibrary.wiley.com/wol1/doi/10.1002/cssc.201402357/abstract

DOI: 10.1002/cssc.201402357

Open Access Link: http://onlinelibrary.wiley.com/wol1/doi/10.1002/cssc.201402357/abstract

Abstract

We herein describe a straight forward procedure to increase the performance of platinum-on-alumina catalysts in methanol steam reforming by applying an alkali hydroxide coating according to the "solid catalyst with ionic liquid layer" (SCILL) approach. We demonstrate by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and temperature-programmed desorption (TPD) studies that potassium doping plays an important role in the catalyst activation. Moreover, the hygroscopic nature and the basicity of the salt modification contribute to the considerable enhancement in catalytic performance. During reaction, a partly liquid film of alkali hydroxides/carbonates forms on the catalyst/alumina surface, thus significantly enhancing the availability of water at the catalytically active sites. Too high catalyst pore fillings with salt introduce a considerable mass transfer barrier into the system as indicated by kinetic studies. Thus, the optimum interplay between beneficial catalyst modification and detrimental mass transfer effects had to be identified and was found on the applied platinum-on-alumina catalyst at KOH loadings around 7.5 mass%.

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APA:

Kusche, M.M., Agel, F., Ní Bhriain, N., Kaftan, A., Laurin, M., Libuda, J., & Wasserscheid, P. (2014). Methanol Steam Reforming Promoted by Molten Salt-Modified Platinum on Alumina Catalysts. Chemsuschem, 7, 2516-2526. https://doi.org/10.1002/cssc.201402357

MLA:

Kusche, Matthias Manfred, et al. "Methanol Steam Reforming Promoted by Molten Salt-Modified Platinum on Alumina Catalysts." Chemsuschem 7 (2014): 2516-2526.

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