Abstract：In order to enhance the absorption of CO2 in the Nmethyldiethanolamine (MDEA) solution,TiO2-MDEA-H2O nanofluids were prepared by dispersing TiO2 nanoparticles into MDEA solution with MDEA mass fraction of 50％. The stability of nanofluids was determined by the method of absorbance. The results show that only with mechanical agitation, the nanofluids can keep stable for 48 h without any dispersant. The thermophysical properties of MDEA solution were measured when the mass fraction of TiO2 nanoparticles were 0.05％, 0.20％, 0.40％ and 0.80％, respectively. The results show that surface tension, kinematic viscosity and thermal conductivity are increased with the increase of TiO2 nanoparticles mass fraction. The maximum increase of surface tension is 0.6％, and the maximum increase of kinematic viscosity is 4.6％ with the maximum increased thermal conductivity of 5.9％.
2013, Vol. 34 
