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- W2012102565 abstract "Volumetric H2-uptake measurements on polycrystalline MoS2 (39 m2g−1) have been carried out and uptake isotherms in the temperature range 423–573 K have been determined. The equilibrium stoichiometry at 500 mbar and 573 K was H0.035MoS2, and at 473 K the HMo ratio increased to 0.051. Alumina-supported sulfided Mo catalysts provided HMo ratios that were higher by approximately a factor of 4, indicating either a higher MoS2 surface area, spillover of H atoms to the support, or both. Two possible mechanisms for H2 dissociation are discussed, namely, heterolytic dissociation on MoS pairs and homolytic dissociation on disulfide (SS)2− edge groups. The presence of the latter on MoS2 is documented by Raman spectroscopy which shows the characteristic v(SS) mode at 529 cm−1. Although molecular analogs for H2 activation on disulflde groups are known, it is not yet possible to make a clear distinction between the alternative H2 dissociation routes." @default.
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- W2012102565 date "1989-11-01" @default.
- W2012102565 modified "2023-10-11" @default.
- W2012102565 title "Hydrogen uptake by MoS2 and sulfided alumina-supported Mo catalysts" @default.
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- W2012102565 doi "https://doi.org/10.1016/0021-9517(89)90247-9" @default.
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