tetraethylene glycola superior solvent for aromatics

  • tetraethylene glycol—a superior solvent for aromatics

    Tetraethylene Glycol—A Superior Solvent for Aromatics

    The separation of benzene, toluene, and C8 aromatics (BTX) from gasoline fractions is reviewed from a fundamental and historical point of view, and the disadvantages of the old distillation processes are presented. The Udex process, which has been the dominant liquid extraction and extractive distillation process for effecting this separation, is being used more and more. Phase equilibrium

  • tetraethylene glycol—a superior solvent for aromatics

    Tetraethylene Glycol—A Superior Solvent for Aromatics

    Phase equilibrium data show the differences between the various glycol solvents that can be used in this process. These data have shown that tetraethylene glycol is superior to other solvents. There is a significant trend in the industry to employ tetraethylene glycol.

  • tetraethylene glycol | c8h18o5

    Tetraethylene glycol | C8H18O5

    For the other organisms (fish, snail, copepod, protozoan and fungi), LC50 values of DMSO, ethlyene glycol, triethylene glycolmonomethyl ether and tetraethylene glycol were more than 30000 ppm, and these solvents exhibit the lowest toxicity and their acceptable concentration was estimated at about 300 ppm.

  • liquid-liquid extraction of aromatics from hydrocarbon

    LIQUID-LIQUID EXTRACTION OF AROMATICS FROM HYDROCARBON

    Abstract - An aromatics extraction study was conducted in capillaries of internal diameters in the range of 0.8. mm to 2 mm. The systems chosen for study were ‘n-heptane + toluene + propylene carbonate’, ‘n-heptane + toluene + furfural’ and ‘synthetic naphtha reformate + (propylene carbonate + tetraethylene glycol)’. The aim

  • product safety assessment tetraethylene glycol

    Product Safety Assessment Tetraethylene Glycol

    Tetraethylene glycol is a colorless liquid with low volatility and a mild odor.1 See Product Description. Tetraethylene glycol is primarily used as a solvent for aromatics extraction from hydrocarbon processing. It is also used in the oil and gas industry as a drying agent for natural gas

  • optimization of aromatics extraction of naphtha reformate

    Optimization of Aromatics Extraction of Naphtha Reformate

    Solvent capacity and selectivity at 25°C were calculated.The propylene carbonate capacity towards aromatics was found to be two to three times higher than that of triethylene glycol but the

  • liquid-liquid equilibria for the extraction of aromatics from

    Liquid-liquid equilibria for the extraction of aromatics from

    Another BTX extraction method is the Shell process which is based on sulfolane. Several other solvents are also available to the industry. Union Carbide selected tetraethylene glycol as the best glycol for its process. The * Corresponding author, e-mail: [email protected] Fax: +(971-3) 632-382. 0378-3812/97/$17.00 1997 Elsevier Science B.V. All

  • nonaromatic green‐solvent‐processable, dopant‐free, and lead

    Nonaromatic Green‐Solvent‐Processable, Dopant‐Free, and Lead

    A novel donor–acceptor type polymer, alkoxy‐PTEG, composed of benzo[1,2‐b:4,5:b′]dithiophene and tetraethylene glycol (TEG)‐substituted 2,1,3‐benzothiadiazole is reported. The alkoxy‐PTEG exhibits high solubility even in nonaromatic solvents, such as 3‐methylcyclohexanone (3‐MC), and can prevent possible lead leakage via

  • liquid-liquid extraction of aromatics from hydrocarbon

    LIQUID-LIQUID EXTRACTION OF AROMATICS FROM HYDROCARBON

    In the second, total aromatics were extracted from synthetic naphtha reformate (a mixture containing n-hexane, n-octane, n-dodecane, cyclohexane, benzene, toluene, o-xylene and ethylbenzene). Propylene carbonate (PC) mixed with 20% tetraethylene glycol (TTEG) was used as solvent. The percentage of co-solvent TTEG was chosen arbitrarily.

  • (pdf) extraction of high purity aromatic from catalytic

    (PDF) Extraction of High Purity Aromatic from Catalytic

    Extraction of High Purity Aromatic from Catalytic Reformates Using Sulfolane and Tetraethylene Glycol as Industrial Solvents

  • standards relating to solvent analysis | metrohm

    Standards relating to solvent analysis | Metrohm

    Halogenated organic solvents and admixtures thereof : ASTM E2679 : Mono-, di-,tri- and tetraethylene glycol : Alkalinity : in ASTM D1208 : Pigments : Acid and base milliequivalent content : ASTM D4370 : Electrocoat bath : Hydroxyl number : ISO 4629 : Paints and varnishes : DIN 53240 : Paints and varnishes : Hydroxyl groups : ASTM E1899

  • tetraethylene glycol - ftir spectrum - spectrabase

    tetraethylene glycol - FTIR Spectrum - SpectraBase

    Transmission Infrared (IR) Spectrum of tetraethylene glycol with properties.

  • btx (chemistry)

    BTX (chemistry)

    Many different solvents are suitable, including sulfolane (C 4 H 8 O 2 S), furfural (C 5 H 4 O 2), tetraethylene glycol (C 8 H 18 O 5), dimethylsulfoxide (C 2 H 6 OS), and N-methyl-2-pyrrolidone (C 5 H 9 NO). Below is a schematic flow diagram of one method, involving extractive distillation, for extraction of the BTX aromatics from a catalytic

  • aromatic fluorination of multiblock amphiphile enhances its

    Aromatic Fluorination of Multiblock Amphiphile Enhances Its

    A multiblock amphiphile that consists of perfluorinated hydrophobic unit and hydrophilic tetraethylene glycol chains has been prepared. The maximum concentration of the amphiphile that can be incorporated into DOPC lipid bilayer membranes is 43 times higher than that of its non‐fluorinated analogue.