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Transmission IR Studies of Hydrogen Storage Materials

Transmission IR Studies of Hydrogen Storage Materials. Michael Trenary, Department of Chemistry, University of Illinois at Chicago.

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Transmission IR Studies of Hydrogen Storage Materials

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  1. Transmission IR Studies of Hydrogen Storage Materials Michael Trenary, Department of Chemistry, University of Illinois at Chicago Borohydrides such as NaBH4 and LiBH4 are attractive as hydrogen storage materials because of their high weight percentages of hydrogen. However, it has been observed that the amount of hydrogen released from the thermal decomposition of borohydrides is less than expected and it has been hypothesized that this is because stable intermediates form. The following reaction sequence has been proposed involving formation of a stable B12H122- anion. NaBH41/12Na2B12H12 + 5/6NaH + 13/12H2 1/12Na2B12H12  NaH + B + 3/2H2 To determine if this reaction occurs, IR spectra were obtained for salts containing the BH4- and B12H122- anions as a function of temperature. Spectra obtained at room temperature are shown below. BH4- B12H12-2

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