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298 K Reaction No NH 3 , borazine formation

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298 K Reaction No NH 3 , borazine formation

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  1. Ammonia borane has a hydrogen content of 19.6 wt.%. We have demonstrated the first dehydrogenation of ammonia borane using heteropolyacids, such as silicotungstic acid. This new process has significant advantages over current methods. In our novel process, the maximum amount of H2 is rapidly extracted from ammonia borane at 298 K, with minimal side products. This is in contrast to other methods, such as thermolysis which releases H2 slowly, at 500°C. H2 Extraction from Ammonia Borane MaterialsCraig P. Taylor, Colorado School of Mines, DMR 0820518 18 mole% HSiW 9 mole% HSiW Ammonia borane + 2 H2O H4SiW11O40 3 H2(g)+ H3BO3 298 K Reaction No NH3, borazine formation 2.5 equiv. H2 Released ~ 2 mins

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