Author： Ge X. Zhang H-L.
Publisher： Academic Press
ISSN： 0022-4596
Source： Journal of Solid State Chemistry, Vol.141, Iss.1, 1998-11, pp. : 186-190
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Abstract
In H2/N2 atmosphere, the reduction behavior of V-Ag catalysts with V/Ag atomic ratios 1/0, 9/1, 3/1, 2.16/1, 1.5/1, 1/1, and 0/1 were studied by temperature-programmed reduction (TPR), X-ray diffraction (XRD), and ultraviolet diffuse reflectance spectra (UVDRS). The results showed that the reduction processes of Ag2V4O11, Ag2V4O10.84, and Ag1.2V3O8 are all the same while the reduction temperature was raised; they were first reduced to Ag and V6O13, then to VO2, and thence to V2O3 subsequently. To vanadium oxides in V-Ag catalysts, the reactions with hydrogen were accelerated and the peak temperatures (
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