怎么分离四氢呋喃中的甲醇？ 加盐蒸馏是一考虑。再者，也可以用亲水渗透汽化，但估计效果不会太好。 四氢呋喃和 甲醇 汽液平衡文献 1. Influence of nonvolatile solute on boiling point of azeotrope By Renyi, Sun; Qian, Sun From Huaxue Wuli Xuebao (2002), 15(4), 303-306. Language: English, Database: CAPLUS The influence of 10 nonvolatile solutes on b.p. of methanol-tetrahydrofuran azeotrope was detd. by means of isobaric vapor-liq. equil. expts. Based on classical thermodn. a conclusion of universal significance was derived, i.e., a little nonvolatile solute always causes the elevation of azeotrope's b.p. irresp. of the variation of its vapor compn. It is in agreement with the exptl. results and the relevant reports in the literature without exception. 2. Measurement and Correlation of Isothermal Vapor-Liquid Equilibrium Data for the System Tetrahydrofuran + Methanol + Lithium Bromide By Yan, Weidong; Fu, Ranran; Zhang, Rui; Gmehling, Juergen From Journal of Chemical and Engineering Data (2002), 47(3), 482-486. Language: English, Database: CAPLUS The isothermal vapor-liq. equil. of the system THF (1) + methanol (2) + lithium bromide (3) at three temps. (30.2, 50.2, and 65.0) °C was investigated at const. salt molalities (0.00, 0.25, 0.50, 1.00, and 2.00 mol·kg-1) with the help of the headspace gas chromatog. (HSGC) technique. The exptl. data were fitted using the extended UNIQUAC model, the electrolyte UNIFAC group-contribution model, and the LIQUAC model. The vapor-liq. equil. of the system THF + methanol was considerably altered by the presence of salt; the azeotropic point was shifted to higher THF concns. 3. Effect of nonvolatile solute on vapor-liquid equilibrium at fixed liquid composition By Sun, Ren Yi; Sun, Qian From Fluid Phase Equilibria (2002), 193(1-2), 135-145. Language: English, Database: CAPLUS The influence of some nonvolatile solutes on b.ps. of two azeotropic mixts. (1-propanol-water and methanol-tetrahydrofuran systems) was detd. by means of isobaric vapor-liq. equil. expts. A basic thermodn. equation of nonvolatile solute effect on vapor-liq. equil. at fixed liq. compn. was derived. Based on the theor. anal. about the equation, two criterions of universal significance were obtained: (1) when a little nonvolatile solute dissolves in a binary liq. mixt. with const. compn., if the vapor compn. of less volatile component is increased, the b.p. must be elevated at given pressure or... 4. Salt effect in nonaqueous mixed solvent systems By Liu, Wen-Bin; Wang, Jian-Ji; Zhuo, Ke-Lei; Wang, Cai-Lan; Lu, Jin-Suo From Huaxue Xuebao (1998), 56(1), 21-31. Language: Chinese, Database: CAPLUS Vapor-liq. equil. data of methanol - 1,4 - dioxane - NaSCN, methanol - 1,4-dioxane - NaI and methanol - THF - LiCl, and methanol - THF - CuCl2 systems were measured with modified Rose still at 101.33 kPa. The linear relationship between boiling temp. and salt concn. was verified by the exptl. results and thermodynamical theory. The salt effect parameters at each binary compn. were calcd. The authors analyzed the reasons of "abnormal phenomena" obsd. in the expt. and probed into the interactions between the particles in solns. Some important conclusions were obtained by the aid of the phase... 5. Vapor-liquid equilibrium data for methanol-tetrahydrofuran-potassium acetate system By Wang, Shouyu From Shiyou Huagong (1991), 20(5), 321-6. Language: Chinese, Database: CAPLUS The vapor-liq. equil. data for methanol-THF systems of salt-free and with various concns. of potassium acetate were measured under 0.101 MPa (760 mmHg) pressure. Ternary system with dissolved salt was treated as a pseudobinary. Thermodn. consistency of the exptl. data for the salt-free and the dissolved salt systems were checked by means of the Herington method. The systems were correlated by the Wilson equation and Van Laar equation, and the correlated results were in fairly good agreement with the measured data. 6. Determination and calculation of vapor-liquid equilibrium of methanol-tetrahydrofuran system By Tong, Jingshan; Gao, Guanghua; Gao, Hongli From Shiyou Huagong (1988), 17(4), 222-6. Language: Chinese, Database: CAPLUS The vapor-liq. equil. of MeOH-THF system at 1.013 × 105 Pa was detd. with a modified vapor-liq. 2-circulation equil. still. A modified virial equation combined with UNIFAC activity coeff. model was developed to calc. strongly polar systems. The calcd. results of the system agreed with the exptl. ones. 7.Indirect determination of vapor-liquid equilibriums by a small ebulliometer. Tetrahydrofuran-alcohol binary systems By Yoshikawa, Yoshio; Takagi, Akira; Kato, Masahiro From Journal of Chemical and Engineering Data (1980), 25(4), 344-6. Language: English, Database: CAPLUS For the 4 binary systems of THF and alc. (Me, Et, iso-Pr, and n-Pr), b.ps. were measured with a small ebulliometer at atm. pressure, and vapor-liq. equil. relations were indirectly detd. by using the Wilson equation. Values of the Wilson parameters were calcd. to minimize the sum of squares of deviations in the b.ps. for all data points.查看更多8个回答 . 4人已关注
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