Volumetric properties of dilute (d-glucose + H2O) solutions at temperatures from (293.15 to 433.15) K and pressures from (0.10 to 50.00) MPa

The densities of aqueous solutions of D-glucose were measure at
temperatures from (293.15 to 433.15) K and pressures from (0.10 to 50.00)
MPa using a vibrating-tube densimeter.  Apparent molar volumes
Vφ,m and partial molar volumes at infinite dilution V∞ were calculated
from the experimental results. V∞ increases as temperature increases and
varies linearly with temperature above ~300 K. In addition, V∞ does not
vary as a function of pressure up to 50.0 MPa.  Comparison of
these results with previous studies indicate excellent agreement and
significantly extend the experimental database for aqueous solutions of
D-glucose to elevated temperatures and pressures.

本研究采用振动管密度计，在293.15~433.15 K的温度范围与0.10~50.00 MPa的压力范围内，测定了D-葡萄糖水溶液的密度。基于实验结果，计算得到了表观摩尔体积$V_{phi,m}$与无限稀释偏摩尔体积$V^infty$。研究表明，$V^infty$随温度升高而增大，且在约300 K以上时与温度呈线性关系；此外，在压力不超过50.0 MPa的范围内，$V^infty$基本不随压力变化。将本研究结果与既往研究对比后可见，二者具有极佳的一致性，且本研究显著拓展了D-葡萄糖水溶液在高温高压条件下的实验数据库。