Densities and Viscosities of the Binary and Ternary Aqueous Solutions of Pyrrolidone-Based Ionic Liquids at Different Temperatures and Atmospheric Pressure

Abstract

The densities and viscosities of the ternary solutions O and their binary subsystems at (298.15, 303.15, and 308.15) K and atmospheric pressure were measured. The simple equations developed for mixed electrolyte solutions have been invoked to predict the densities and viscosities for these ionic liquid solutions. The predicted values agree well with the experimental data, indicating that the examined properties of the ternary aqueous solutions of pyrrolidone-based ILs can be well predicted from the corresponding data of their binary subsystems of equal ionic strength using simple equations.

Synthesis of trioxane from polyformaldehyde in sulfolane catalyzed by ionic liquids

“…离子液体已被用作由甲醛水溶液合成三聚甲醛 的新型催化剂, 以适宜的离子液体(文献未报道其详 细结构和名称)为催化剂、甲醛水溶液为原料合成三 聚甲醛的工艺已完成了工业中试试验并且取得了良 好效果 [14] . 离子液体催化剂的优势是腐蚀性较硫酸 显著降低, 使设备投资降低、工艺相对简单, 同时催 化选择性显著提高 [14,16] [17,18] , 其 反 应 方 程式为:…”

Synthesis of Polyoxymethylene Dimethyl Ethers Catalyzed by Pyrrolidinonium‐Based Ionic Liquids

“…The procedures for preparing the target ILs are similar to those used in our previous studies , and are described briefly as follows. Equimolar amounts of NOP and the corresponding acids were mixed slowly using acetone as solvent, and stirred for 4−6 h at room temperature.…”

Densities and Viscosities of Amino Acid + Xylitol + Water Solutions at 293.15 ≤ T/K ≤ 323.15

“…The viscosities of amino acids in xylitol aqueous solutions were computed by the following equation: where η, ρ, t and η 0 , ρ 0 , t 0 are viscosities, densities, and flow times of the measured solution and viscosity standard solution, respectively. The viscosities of the measured solutions are included in Table .…”

“…Since all flow times were greater than 100 s, the kinetic energy and the end corrections were found to be negligible. The viscosities of amino acids in xylitol aqueous solutions were computed by the following equation:12…”