- 作者: O'hare, Dermot ; Evans, John S. O. ; Price, Stephen
- 作者服務機構: Inorganic Chemistry Lab., UK
- 中文摘要: Energy dispersive X-ray diffraction (EDXRD) has been used to perform in-situ kinetic studies on the intercalation of a range of guest molecules in layered lattices. The kinetics of the intercalation of cations { K/sup +/, PyH/sup +/ (Py = C/sub 5/H/ sub 5/N), Nme/sub 4//sup +/} and the long chain ammonium ions C/sub 12/TMA, C/sub 16/TMA, C/sub 18/TMA (C/sub 12/TMA = dodecyltrimethylammonium, C/sub 16/TMA = hexadecyltrimethylammonium and C/sub 18/TMA = octadecyltrimethylammonium) into crystals of MnPS/sub 3/ have been determined. These reactions are very fast and in some cases novel transient phases are observed. The rate of cobaltocene, Co(.eta.-C/sub 5/H/sub 5/)/sub 2/, intercalation in layered dichalcogenides ZrS/sub 2/, 2H-SnS/sub 2/, 2H -SnSe/sub 2/, 2H-TaS/sub 2/, 2H-NbS/sub 2/, 1T-TaS/sub 2/ and TiS/sub 2/ has also been investigated. Integrated intensities of the Bragg reflections have been used to determine the extent of reaction, (.alpha.), versus time for each of these reactions. A number of kinetic models have been considered, including the AvramiErofeyev (m = 1.5) deceleratory nuclei-growth model and statistical simulation. The concentration and solvent dependence of the rate of Co(.eta.-C/sub 5/H/sub 5/)/sub 2/ intercalation into 2H-SnS/sub 2/ has also been determined. Surprisingly we find that the rate of intercalation is invariant to the initial Co(.eta.-C/sub 5/H/sub 5/)/sub 2/ concentration over a wide concentration range.
- 英文摘要: --
- 中文關鍵字: Intercalation; Solid State; In Situ Diffraction; Kinetics; X-Ray Diffraction
- 英文關鍵字: 嵌入;固態;原位繞射;動力學;X射線繞射