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Surface, dehydration versus temperature

Niobium oxide surfaces are also very dependent on the dehydration temperature. An illustration is given in Figure 9.5, which represents the differential heats of NH3 adsorption versus ammonia coverage for a niobium oxide from CBMM pre-treated at 423, 523, 623, 723 and 823 K [41]. [Pg.405]

Hydroxyl coverage of the silica surface versus dehydroxylalion temperature (I). Shaded area range of data on a variety of silicas investigated by Davydov et at. (36). Dehydration of annealed (700°C) and rehydrated silica during heating in air A and in vacuum B (47). Broken line, C data on unannealed silica (48-51). [Pg.323]

See other pages where Surface, dehydration versus temperature is mentioned: [Pg.295]    [Pg.133]    [Pg.295]    [Pg.1845]    [Pg.141]    [Pg.54]    [Pg.41]    [Pg.522]   
See also in sourсe #XX -- [ Pg.635 ]



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