Dong Fang

One-Pot, Three-Component Synthesis of α-Aminophosphonates Catalyzed by Acyclic Acidic Ionic Liquids

Some acyclic acidic ionic liquids were prepared and used as the catalysts for the one-pot, three-component synthesis of α-aminophosphonates from aldehydes, amines, and trimethylphosphite at room temperature in water. The products could simply be separated from the system of catalyst/water, and the catalysts could be reused at least six times without noticeably decreasing the catalytic activity.

Preparation of Expanded Perlite-Based Binary Eutectic Composite of Phase Change Heat Storage Materials

The binary eutectic of lauric acid-stearic acid / expanded perlite composite phase change materials (PCM) was prepared using the method of vacuum impregnation. The structures and properties of this composite PCM were characterized by FT-IR, SEM, DSC and TG analysis. The results showed that the binary eutectic of fatty acid had been composed with porous skeleton expanded perlite completely in a physical method, the phase transition temperature of composite PCM was about 33.0 °C and latent heat was 131.3 J/g. it had a good thermal stability after 100 times of recycling and gave the phase transition temperature 33.5 °C and the latent heat of 128.1 J/g respectively.