Measurement and Correlation of Solubilities of Adipic Acid in Different Solvents

Measurement and Correlation for Solubilities of Adipic Acid, Glutaric Acid, and Succinic Acid in Dimethyl Adipate + Methanol Mixtures

“…For the solute of AA, its Δ T fus H and T fus can be obtained in the literature, which are 34900 J·mol –1 and 426.15 K, respectively, For the solute of GA, its Δ T fus H and T fus can be obtained in the literature, which are 20900 J·mol –1 and 369.15 K, respectively, For the solute of SA, its Δ fus H and T fus can be obtained in the literature, which are 32900 J·mol –1 and 458.15 K, respectively, and the mole gas constant R is 8.314 J·mol –1 ·K –1 . In this work, for the definition of the activity coefficient, the modified NRTL model would be adopted. ,, Because the activity coefficient depends on the mole fraction and temperature, so eq must be solved iteratively. To calculate the activity coefficient, the NRTL activity coefficient model was adopted in this work as where x i and γ i represent the mole fraction and the activity coefficient of component i , a ij and b ij are the parameters needed to be regressed, η ij was constant value 0.3, as Remon and Prausnitz proposed .…”

“…In this work, for the definition of the activity coefficient, the modified NRTL model would be adopted. 16,26,27 Because the activity coefficient depends on the mole fraction and temperature, so eq 3 must be solved iteratively.…”

“…Shen measured the solubilities of AA in acetic acid + water solvent mixtures and acetic acid + cyclohexane solvent mixtures at temperatures ranging from 303.2 to 343.2 K . Mao measured the solubilities of AA in different solvents, such as water, ethanol, chloroform, n -butanol, and acetone at the temperature range of 288.05–360.05 K . Fan measured the solubilities of AA in several solvents, such as cyclohexanone, cyclohexanol, acetic acid, N , N -dimethylformamide, dimethylacetamide, and dimethyl sulfoxide at the temperature range of 290.80–355.15 K .…”

“…Some relevant solubilities of AA, GA, and SA in pure or mixed solvents could be obtained in recent literatures. Luo measured the solubilities of AA in acetic acid + ε-caprolactone mixtures and cyclohexanone + ε-caprolactone mixtures at the temperature range of 305.55 to 345.15 K. 12 Suren measured the solubilities of AA in various solvents, such as water, acetic acid, acetic acid + water solvent mixtures, cyclohexanol + cyclohexanone solvent mixtures at temperatures ranging from 303.0 to 403.0 K. 13 Li measured the solubilities of AA in GA + acetone solvent mixtures at temperatures ranging from 304.70 to 354.65 K and SA in GA + acetone solvent mixtures at the temperatures ranging from 284.95 to 316.35 K. 14 Shen measured the solubilities of AA in acetic acid + water solvent mixtures and acetic acid + cyclohexane solvent mixtures at temperatures ranging from 303.2 to 343.2 K. 15 Mao measured the solubilities of AA in different solvents, such as water, ethanol, chloroform, n-butanol, and acetone at the temperature range of 288.05−360.05 K. 16 Fan measured the solubilities of AA in several solvents, such as cyclohexanone, cyclohexanol, acetic acid, N,N-dimethylformamide, dimethylacetamide, and dimethyl sulfoxide at the temperature range of 290.80−355.15 K. 17 Shen measured the solubilities of AA in cyclohexanone + cyclohexanol mixtures at the temperature range of 303.15−349.45 K, cyclohexane + cyclohexanol mixtures at the temperature range of 304.15−339.45 K, and cyclohexane + cyclohexanone mixtures at the temperature range of 304.85−342.45 K. 18 Yu measured the solubilities of AA in cyclohexanol + cyclohexanone solvent mixtures at the temperature range of 303.0−353.0 K and cyclohexanone + cyclohexane solvent mixtures at the temperature range of 303.0−378.5 K. 19 Gaivoronskii measured the solubilities of AA in methanol at the temperature range of 273.2− 333.2 K. 20 Lei measured the solubilities of GA in acetic acid + water mixtures at the temperature range of 303.2−333.2 K and acetic acid + cyclohexane mixtures at the temperature range of 303.2−343.2 K. 21 Song measured the solubilities of GA in cyclohexanone + cyclohexanol mixtures and acetic acid at the temperature range of 292.15−354.60 K. 22 Jiang measured the solubilities of SA in methanol + water mixtures and ethanol + water mixtures at the temperature range of 278.15−333.15 K. 23 Song measured the solubilities of SA in acetic acid + water mixtures at the temperature range of 303.2−333.2 K and acetic acid + cyclohexane mixtures at the temperature range of 303.2− 343.2 K. 24 Luo measured the solubilities of AA, GA, and SA in acetic acid + cyclohexanone mixtures at the temperature range of 298.55−340.85 K. 25 Unfortunately, satisfactory experimental equilibrium data for AA, GA, and SA in DMA + methanol solvent mixtures are lacking for the particular conditions of temperature and composition required in a particular program. Hence, it is essential to measure and correlate the solubilities of AA, GA, and SA in DMA + methanol solvent mixtures, respectively.…”

Microscale Solubility Measurements of Matrix-Assisted Laser Desorption–Ionization (MALDI) Matrices Using Attenuated Total Reflection (ATR) Fourier Transform Infrared Spectroscopy (FT-IR) Coupled with Partial Least Squares (PLS) Analysis

“…While data analysis can be done manually, the PLS method provides equivalent quantitative results with 25 1.8 5.1% 36.5 26 -1.1 -3.1% 33.2 27 2.2 6.2% significantly less effort. Even low solubility (<10 mg/mL) values can be determined for solute/solvent combinations by using calibration curves created using other similar solvent mixtures.…”