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Citation: Liu Yingjun, Dong Baohe, Xie Youchang, Tang Youqi. XRD INVESTIGATION OF THE INTERACTION BETWEEN GROUP——ⅡB OXIDES AND γ-Al₂O₃[J]. Acta Physico-Chimica Sinica, ;1986, 2(05): 470-472. doi: 10.3866/PKU.WHXB19860513 shu

XRD INVESTIGATION OF THE INTERACTION BETWEEN GROUP——ⅡB OXIDES AND γ-Al₂O₃

1.
Institute of Physical Chemistry; Peking University

Received Date: 26 September 1985
Available Online: 15 October 1986

The interaction between γ-Al_2O_3 and the oxides of Zinc, Cadium and Mercury have been studied by x-ray diffraetion(XRD). Samples of ZnO/γ-Al_2O_3, CdO/γ-Al_2O_3 and H /γ-Al_2O_3 were prepared by impregnating γ-Al_2O_3 with the corresponding nitrate solutions, then drying and ealeinating. It has been shown that CdO and H can be dispersed on γ-Al_2O_3 surface to form submonolayers. Their dispersion capaeieies derived from Fig.2 and Fig.3 are 0.48g CdO/g γ-Al_2O_3 and 0.16g H /g γ-Al_2O_3, or 0.20g CdO/100m~2 and 0.067g H /100m~2 surface of γ-Al_2O_3 (specific surface of γ-Al_2O_3 is 240m~2/g). On the other hand, ZnO/γ-Al_2O_3 system can not be in a monolayer dispersion state, because ZnO can react with γ-Al_2O_3 to form Zinc spinel at rather low temperature (200 ℃). The difference between these three systems may be attributed to their different ion radius.
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XRD INVESTIGATION OF THE INTERACTION BETWEEN GROUP——ⅡB OXIDES AND γ-Al2O3

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XRD INVESTIGATION OF THE INTERACTION BETWEEN GROUP——ⅡB OXIDES AND γ-Al₂O₃