Crystallization phase diagram

Figure 6. Vapor-liquid-solid (plastic crystal) phase diagram of adamantane. The phase transition from plastic crystal to rigid crystal phase occurs at 208.6K (l/T = 0.004794K ). This diagram is based on the data of Table II.

The area of conditions called the metastable zone is situated between the solubility and supersolubility curves on the crystallization phase diagram (Fig. 3.1). The supersolubility curve is defined as the line that separates the conditions where spontaneous nucleation (or phase separation or precipitation) occurs, from those where the crystallization solution remains clear if left undisturbed (Ducruix and Giege, 1992 Ducruix and Giege, 1999). 

Figure 3.28 Crystallization phase diagram of system 1.0AI2O3 1.0P2Os x[Co(Cp)2]-OH yPr2NH 190 H20 in the presence of two templates at 160°C. API -fa AEL noncrystalline AFI/AST AFI/tridymite A tridymite. Reproduced with permission from [119]. Copyright (1999) Witey-VCH...

Figure 8.6 Cj2E08-water lyotropic liquid-crystal phase diagram. Reproduced with permission from [63], Copyright (1983) Royal Society of Chemistry...

Figure 8.7 The lyotropic liquid crystal phase diagram for CTAB-water system...

SBA-1 and SBA-6 were synthesized by using different surfactants and from acidic and basic synthesis media, respectively. They have the same structure and show the similar XRD patterns. Their structure is similar with cubic Ij phase, spherical micelles packed in Pm3n symmetry, in lyotropic liquid-crystal phase diagram for surfactant-water systems. 

Key words Barium di-2-ethylhexylsulphosuccinate, barium octylsulphate, liquid crystals, phase diagram, NMR... 

Thermal analysis has been used in a variety of areas including studies on thermal decomposition, moisture determination, volatile compounds, thermal oxidation, reaction kinetics, crystallization, phase diagrams, specific heat determination, vitreous transition determination, and storage time determination, among others [12]. 

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