Citation: Li Yang, Xin Yu Han, Xue Jiao Tang, Chang Xiu Han, Yi Xiao Zhou, Bao Gui Zhang. A novel photo-initiated approach for preparing aluminum diethylphosphinate under atmospheric pressure[J]. Chinese Chemical Letters, ;2011, 22(4): 385-388. doi: 10.1016/j.cclet.2010.10.039 shu

A novel photo-initiated approach for preparing aluminum diethylphosphinate under atmospheric pressure

College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China

Received Date: 23 August 2010

Fund Project: The authors gratefully acknowledge financial support by Zhenxing Chemistry Co., Ltd (Tianjin, China).We would like to thank the State Key Laboratory of Elemento-organic Chemistry Nankai University, for their great help in the measurements.

A novel preparation of aluminum diethylphosphinate (AlPi) was carried out with free-radical addition reaction by means of UV-irradiation under atmospheric pressure. A solution of sodium hypophosphite was treated with ethylene and irradiated with ultraviolet light in the presence of an amount of photoinitiator effective to initiate the free-radical reaction between the hypophosphite anion and the double bond of the ethylene molecule. The ethylene was micro-bubbled into the reaction mixture with the addition of the photoinitiator, and the gas-liquid contact surface and the photoinitiator concentration in the gas-liquid interface were increased largely. The yield of the final product could be improved to about 96%. The contents of P, Al in samples were detected by ICP, and the molecular structure of the samples was confirmed by ³¹P NMR, ¹H NMR and FTIR spectroscopic analysis. Thermal stability of the final products was investigated in detail by TG-DTA.
- Photoinitiator,
- Aluminum diethylphosphinate,
- FTIR,
- ¹H NMR
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