Hydrogen adsorption in the Ti-doped mesoporous silicate SBA-15

A. I. Acatrinei, M. A. Hartl, Juergen Eckert, Eduardo H.L. Falcao, G. Chertkov, L. L. Daemen

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Abstract

While metal-doped mesoporous silicate SBA-15 has been studied extensively for its catalytic properties, the adsorption of molecular hydrogen in this system has not been considered. We report herein that the titaniumdoped material (10% Ti) adsorbs nearly twice the amount of hydrogen at 77 K and a pressure of 25 bar than pure SBA-15, Hydrogen adsorption isotherms also show that binding energies in the Ti-doped material are more than 50% greater than in SBA-15. Neutron vibrational spectroscopy shows clear evidence for interaction of hydrogen with Ti, which is responsible for part of the increase in hydrogen sorption in the material.

Original languageEnglish
Pages (from-to)15634-15638
Number of pages5
JournalJournal of Physical Chemistry C
Volume113
Issue number35
DOIs
StatePublished - Sep 3 2009

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    Acatrinei, A. I., Hartl, M. A., Eckert, J., Falcao, E. H. L., Chertkov, G., & Daemen, L. L. (2009). Hydrogen adsorption in the Ti-doped mesoporous silicate SBA-15. Journal of Physical Chemistry C, 113(35), 15634-15638. https://doi.org/10.1021/jp8110875