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Yvonne M. Curtis

Bio: Yvonne M. Curtis is an academic researcher. The author has contributed to research in topics: Nickel. The author has an hindex of 1, co-authored 1 publications receiving 515 citations.
Topics: Nickel

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Journal ArticleDOI
TL;DR: The basic salts of this system were prepared and their structures and physico-chemical properties were studies by electron microscopy, chemical analysis, X-ray powder diffraction, thermal analysis, and acidity-basicity measurements as mentioned in this paper.
Abstract: The basic salts of this system were prepared and their structures and physico-chemical properties were studies by electron microscopy, chemical analysis, X-ray powder diffraction, thermal analysis, i.r. absorption spectra, BET absorption, and acidity-basicity measurements. The salts were found to be new compounds analogous to hydrotalcite. They can be expressed by the formula; [M 2+ M 3+ (OH)2(x+y))]y+ [A 1 − , Az2- · mH2O]-(z1 + 2z2) where M2+ and M3+ denote di- and trivalent cations, A− and A2− denote mono- and divalent anions, respectively, and y = z1 + 2z2; z1 ≫ z2. The structures consist of positively charged Cd(OH)2-like basic layers and intermediate layers formed from anions and water molecules with the solid solution of divalent cation (M2+) and trivalent cation (M3+) being formed in the range of 0.6 > x/(x + y) > 0.9. The anions of Cl−, NO 3 − and ClO 4 − are easily substituted by CO 3 2− . A large part of the NO 3 − makes a monodentate-type bond and the ClO 4 − a bridge-type bond.

933 citations

Journal ArticleDOI
TL;DR: The usual assignments of absorption bands due to products of CO and CO2 reactive adsorption on metal oxide surfaces are also critically reexamined in this paper, where carbonate, bicarbonate and formate ions, and of CO2 in metal complexes are reported.

751 citations

Journal ArticleDOI
TL;DR: In this paper, Darstellung, Eigenschaften, Substituenteneffekte und Donoreigenschalkte werden zusammenfassend behandelt.

226 citations