87Rb NMR studies of molten and glassy 2Ca(NO3)2-3RbNO3

Article Abstract:

A study on molten nitrate salts was conducted to obtain insights into the dynamics of their glassy state by investigating the ion dynamics in the fragile glass-former 2Ca(NO3)2-3RbNO3 using 87Rb nuclear magnetic resonance techniques. The experiment covered a broad temperature range, namely 8 K less than T less than 500 K. The temperature dependent spin-lattice relaxation rate exhibits two maxima. The maximum observed near 390 K reveals that the ionic motion causing both the structural and conductivity relaxation occurs on roughly the same time scale.

Case studies, Ion exchange

---

Competitive interactions and glassy state extension in lithium salt solutions

Article Abstract:

A study on lithium halides in water was conducted to carry out a simple comparison of the extremes of the liquid state for two common lithium salt systems where concentrated solutions approaching the dihydrate could be investigated in both molten and supercooled states. The experimental results suggest the types of systems where higher boiling points might be obtained without undue increase on the glass transition temperature and, therefore, the viscosity.

Metal halides, Lithium, Lithium (Metal), Solution (Chemistry), Solutions (Chemistry)

---

Pyrrolidinium imides: a new family of molten salts and conductive plastic crystal phases

Article Abstract:

A study on room temperature molten salts presents the first report of low molecular weight ammonium cation salts being molten at room temperature. The new family of salts is based on the pyrrolidinium cation IV where the two alkyl substituents range from methyl up to butyl. These salts are shown to have melting points below room temperature in some instances and exhibit interesting conductive behavior in their crystalline state in other cases.

Ionic solutions

Similar abstracts:

• Abstracts: Influence of chain charge and complexation on the overlap and entanglements formation in poly(acrylic acid) salt-containing aqueous solutions
• Abstracts: Simulation study to model extremely slow reaggregation processes in micelle solutions. Extremely slow reaggregation in micelle solutions. A dynamic light scattering study
• Abstracts: Indirect radiation effects on thymine in the glassy state of its dilute aqueous solution. Increasing contact-ion pairing as a supercooled water anomaly. Estimation of the fictive temperature of hyperquenched glassy water
• Abstracts: Excitonic interactions and stark spectroscopy of light harvesting systems. Superradiance coherence sizes in single-molecule spectroscopy of LH2 antenna complexes
• Abstracts: Molecular dynamics in binary organic glass formers. Molecular motion in the two amorphous phases of triphenyl phosphite

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.