SHOCKTUBE STUDIES OF GAS-LIQUID REACTIONS AND OF GAS-PHASE DIFFUSION.
Annual rept. 1 May 64-31 Jul 65,
DELAWARE UNIV NEWARK DEPT OF CHEMICAL ENGINEERING
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A shocktube technique is described for determination of molecular diffusivities of gases containing carbon-dioxide for wide ranges of temperature and pressure. A shock wave moves through the test gas and reflects from a thin film of liquid triethanolamine on the endwall of the shocktube. Partial pressure of carbon dioxide is rapidly increased by the shock wave, and it absorbs and ionizes in the liquid. Rate of absorption, from which the gas-phase diffusivity can be deduced, is observed by following electrical conductivity of the liquid solution. Development of the method and preliminary results for binary mixtures of carbon dioxide with argon, nitrogen, oxygen, air, helium and carbon monoxide are reported. Temperatures of 300K to 2300K and pressures of 0.4 to 5.7 atm are employed. Experimental results do not yet have desired precision, and accuracy of the data analysis also needs to be increased. Methods for obtaining these improvements are discussed. Author
- Fluid Mechanics