https://doi.org/10.1016/j.cesx.2019.100032
“The viscosity of the blended amines is listed in Table 3 and presented in Fig. 5 along with viscosity data for DEEA/MAPA solutions reported by Monteiro et al. (2015). The viscosity decreased with increasing temperature and increased with increasing concentration of the tertiary amine blended with MAPA. The blended amines with equal molarity showed similar viscosities. The viscosity indirectly affects the CO2 diffusivity coefficient, in which a decrease in the solution viscosity leads to an increase in the CO2 diffusivity coefficient (Bernhardsen et al., 2019a).
Table 3. Viscosity data for aqueous solutions of 3DMA1P and 1-(2HE)PRLD blended with MAPA, mPa·s.
| T (°C) | 2 M 3DMA1P + 1 M MAPA | 3 M 3DMA1P + 1 M MAPA | 4 M 3DMA1P + 1 M MAPA | 3 M 1-(2HE)PRLD + 1 M MAPA |
|---|---|---|---|---|
| 25 | 4.13 | 7.05 | 11.60 | 7.29 |
| 30 | 3.41 | 5.74 | 8.92 | 5.77 |
| 40 | 2.41 | 3.75 | 5.68 | 3.87 |
| 50 | 1.80 | 2.70 | 3.90 | 2.81 |
| 60 | 1.39 | 1.99 | 2.80 | 2.09 |
| 70 | 1.11 | 1.54 | 2.10 | 1.63 |
| 80 | 0.91 | 1.23 | 1.64 | 1.31 |
Fig. 5. Viscosity (μ) of MAPA promoted tertiary amines. *Monteiro et al. (2015).
“