Portal de Periódicos da CAPES

Heat Capacities of the Water + Lithium Bromide + Ethanolamine and Water + Lithium Bromide + 1,3-Propanediol Systems

1997; American Chemical Society; Volume: 42; Issue: 2 Linguagem: Inglês

10.1021/je9602879

1520-5134

Jinsoo Kim, Young Park, Huen Lee, Sun Il Yu,

Extraction and Separation Processes

Heat capacities of the water + lithium bromide + ethanolamine (LiBr/H2N(CH2)2OH mass ratio = 3.5) and water + lithium bromide + 1,3-propanediol (LiBr/HO(CH2)3OH mass ratio = 3.5) systems were measured by using an isoperibol solution calorimeter at four temperatures (283.15, 298.15, 313.15, and 333.15 K) and absorbent (LiBr + H2N(CH2)2OH and LiBr + HO(CH2)3OH) concentration ranges of (29.2 to 70.7)% and (30.7 to 68.3)%, respectively. The measured values were fitted with a simple equation by a least-squares method and the average absolute deviations between experimental and calculated values were 0.21% for the water + lithium bromide + ethanolamine system and 0.15% for the water + lithium bromide + 1,3-propanediol system, respectively.