Prediction of Optimum Composition of the Mixed Solvent N-Methylpyrrolidone/Ethylene Glycol for the Extraction of Aromatics

1990 ◽  
Vol 25 (13-15) ◽  
pp. 1803-1815 ◽  
Author(s):  
M. A. Fahim ◽  
A. S. Elkilani
Keyword(s):  
Ethylene Glycol ◽  
Mixed Solvent ◽  
Optimum Composition

Cryogenic wormlike micelles

Soft Matter ◽  
2019 ◽  
Vol 15 (12) ◽  
pp. 2511-2516 ◽  
Author(s):  
Hongyao Yin ◽  
Yujun Feng ◽  
Peixun Li ◽  
James Doutch ◽  
Yixiu Han ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Rheological Behavior ◽  
Self Assembly ◽  
Mixed Solvent ◽  
Freezing Point ◽  
The Self ◽  
Wormlike Micelles ◽  
Micellar Solutions ◽  
Zwitterionic Surfactant

Cryogenic wormlike micellar solutions with a freezing point far below 0 °C and unique rheological behavior are fabricated from the self-assembly of a C22-tailed zwitterionic surfactant in a mixed solvent of ethylene glycol and water. Such fluids could find applications in areas where viscoelasticity is highly desired at subfreezing temperatures.

scholarly journals Effect of Co-solvent on the Performance of LDHs Photocatalytic Degradation of Methyl Orange Solution

2021 ◽  
Author(s):  
Liang Huang ◽  
Xianghui Jin ◽  
xumei Tao ◽  
Chen Yang ◽  
Yuanyuan Han
Keyword(s):  
Methyl Orange ◽  
Ethylene Glycol ◽  
Photocatalytic Degradation ◽  
Hydrothermal Method ◽  
Photocatalytic Performance ◽  
Mixed Solvent ◽  
Volume Fraction ◽  
Precipitation Method ◽  
Co Precipitation ◽  
Degradation Of Methyl Orange

Abstract In this paper, NiAlCe hydrotalcite was prepared by co-precipitation method and hydrothermal method in different volume fractions of ethylene glycol-water mixed solvent and polyethylene glycol-water mixed solvent, and the effect of photocatalytic degradation of methyl orange under ultraviolet light was studied. Samples were characterized by XRD, XPS, UV-Vis and FT-IR in order to find the reasons for the improvement of photocatalytic performance under co-solvent system. NiAlCe-10%EG(h) and NiAlCe-15%PEG(h) had smaller particle size, which was beneficial to photocatalytic performance. The degradation rate of methyl orange could reach up to 100% in 42 min using NiAlCe hydrotalcite with 10% volume fraction of EG and in 48 min using NiAlCe hydrotalcite with 15% volume fraction of PEG. The photocatalytic effect of NiAlCe hydrotalcite samples prepared by hydrothermal method were better than that prepared by co-precipitation method. This provided a new type of catalyst for the degradation of dyes: preparing with ethylene glycol-water mixed solvent.

High Photocatalytic Activity of Oliver-Like BiVO4 for Rhodamine B Degradation under Visible Light Irradiation

2018 ◽  
Vol 876 ◽  
pp. 52-56 ◽  
Author(s):  
Huu Vinh Nguyen ◽  
Tran Van Thuan ◽  
Sy Trung Do ◽  
Duy Trinh Nguyen ◽  
Dai Viet Nguyen Vo ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ethylene Glycol ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Mixed Solvent ◽  
Hydrothermal Process ◽  
Monomethyl Ether ◽  
High Specific Surface Area ◽  
Light Irradiation

We report the facial synthesis of BiVO4crystals with different morphologies by the solvothermal and hydrothermal process. The phase structure and morphology as-synthesized samples were characterized by XRD, FE-SEM, and UV-vis DRS spectroscopy. We also investigated the photocatalytic activity of BiVO4for the decomposition of rhodamine B (RhB) under visible light irradiation. The results showed that oliver-like BiVO4was obtained when using the mixed solvent of ethylene glycol and water while starflower-like BiVO4was obtained using the mixed solvent of ethylene glycol monomethyl ether and water. The hydrothermal evolution process the BiVO4product with a rod-like morphology. Oliver-like BiVO4with pure monoclinic scheelite phase and high specific surface area exhibits efficient photodegradation of RhB (k = 7.82x10-3min-1).

Structure and luminescent properties of CaCO3:Eu3+ phosphors prepared in ethylene glycol-water mixed solvent

2020 ◽  
Vol 108 ◽  
pp. 110446
Author(s):  
Hongyang Wang ◽  
Ze Wang ◽  
Benfu Qian ◽  
Xiuqing Zhou ◽  
Haifeng Zou ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Mixed Solvent ◽  
Luminescent Properties

Preparation and Recognized Characteristic of Histamine Molecularly Imprinted Polymers

2012 ◽  
Vol 550-553 ◽  
pp. 780-786 ◽  
Author(s):  
Xing Nong Zhou ◽  
Yao Yu ◽  
Song Liu ◽  
Shou Lei Yan ◽  
Qing Zhang Wang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Molecularly Imprinted Polymers ◽  
Mixed Solvent ◽  
Binding Capacity ◽  
Scatchard Analysis ◽  
Uv Spectrophotometry ◽  
Binding Ability ◽  
Equilibrium Binding ◽  
Binding Experiment ◽  
Maximum Binding Capacity

HA MIP was prepared in acetonitrile-ethylene glycol mixed solvent ( 20:1，v/v), HA was used as the template, methacrylic acid (MAA) as the functional monomer, azobisisobutyronitrile (AIBN) as the initiator and ethylene glycol dimethaerylate (EGDMA) as the cross-linker. The UV spectrophotometry was used to demonstrate the interaction between HA and MAA. The adsorption characteristics of MIP to HA have been studied by equilibrium binding experiment and Scatchard analysis. The data obtained show that MIP reached equilibrium within 6 h. It is found that within the studied concentration range one HA molecule is entrapped by two MAA molecules The Scatchard chart shows the apparent maximum binding capacity (Bmax) and the dissociation contents (KD) of MIP are 170.5 μmol/g and 0.18 mmol/L, respctively. The MIP synthesized by this method have better binding ability to histamine and can be applied on the separation and detection of histamine.

Liquid-liquid equilibria for the extraction of aromatics from naphtha reformate by dimethylformamide/ethylene glycol mixed solvent

1997 ◽  
Vol 129 (1-2) ◽  
pp. 175-186 ◽  
Author(s):  
Gamil M. Radwan ◽  
Shaheen A. Al-Muhtaseb ◽  
Mohamed A. Fahim
Keyword(s):  
Ethylene Glycol ◽  
Mixed Solvent

scholarly journals Determination of Dissociation Constants of Malonic Acid in (Ethylene Glycol-Water)X% Mixed Solvent at Different Temperatures Using Electromotive Force Measurements

2019 ◽  
Vol 7 (1) ◽  
pp. 18-26
Author(s):  
Soleen S. Ahmed ◽  
Lazgin A. Jamil
Keyword(s):  
Ethylene Glycol ◽  
Malonic Acid ◽  
Electromotive Force ◽  
Mixed Solvent ◽  
Dissociation Constants ◽  
Standard Entropy ◽  
Thermodynamic Quantities ◽  
Force Measurements ◽  
Electromotive Force Measurements ◽  
Different Temperatures

The first and second dissociation constants of malonic acid in different composition of (ethylene glycol-water)%, (10, 20 and 30)% mixed solvent determined using the electromotive force measurements of galvanic cells without liquid junction at nine different temperatures,  at  interval, including the body temperature. The value of the first and second thermodynamic dissociation constants have been used to determine the thermodynamic quantities of two dissociation processes. These quantities involved the standard free energy,  standard enthalpy change,  standard entropy change,  and standard heat capacity change.

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