Adsorbed media and their molecular sizes

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  1. Molecule

    Molecule critical diameter, A

    Molecule length, A

    Hydrocarbons

    Methane

    3.8

    Ethane

    4.0

    4.6

    Propane

    4.9

    6.52

    n-Butane

    4.9

    7.78

    n-Pentane

    4.9

    9.04

    n-Hexane

    4.9

    10.34

    n-Heptane

    4.9

    11.5

    Other normal paraffins

    4.9

    Neopentane

    7.0

    7.08

    Ethylene

    4.0

    4.6

    Propylene

    4.0

    6.5

    Buten-1

    4.9

    5.6

    Buten-2

    4.9

    1,3-Butadiene

    5.2

    Cyclopropane

    4.9

    Cyclohexane

    6.1

    Acetylene

    2.4

    Benzol

    6.0

    5.7

    Toluene

    6.7

    o-Xylol

    6.0-7.4

    n-Xylol

    6.5-6.8

    Thiophene

    5.3

    Isobutane

    5.6

    Isopentane

    5.6

    Acetylene

    2.4

    Industrial gas components

    Hydrogen

    2.4

    3.1

    Oxygen

    3.4

    3.9

    Nitrogen

    3.7

    4.1

    Carbon disulfide

    3.7

    Nitrous-nitric oxide

    5.0

    Ammonia

    3.6

    Carbon oxide

    2.8

    4.1

    COS

    2.7

    Water

    2.7

    3.2

    Carbon dioxide

    3.1

    4.1

    Acidic organic materials

    Methyl alcohol

    4.0

    Ethyl alcohol

    4.7

    5.9

    Butyl alcohol

    5.8

    Acetic acid

    5.1

    Ethyl ester

    5.1

    Diethyl alcohol

    5.1

    Acetaldehyde

    4.4

    Ethylene oxide

    4.2

    Halogenous media

    Bromine

    3.9

    Iodine

    4.3

    CHCl3

    6.9

    CF4

    5.5

    CCl4

    6.9

    7.1

    CBr4

    7.5

    7.7

    C(CH3)4

    6.9

    7.1

    C2F6

    5.3

    C2Cl6

    6.9

    CF3Cl

    4.9

    CF3Cl2

    4.9

    CF3H

    4.8

    CF2ClH

    4.9

    Rare gases

    Helium

    2.0

    Neon

    3.2

    Argon

    3.8

    Krypton

    3.9

    Xenon

    4.4

    Other media

    Tetramethylmethane

    6.8

    7.0

    1,3,5-triethylbenzol

    8.2

    Diperflourethylpropylamine

    8.7

    Tripropylamine

    9.1

    Hexaethylbenzol

    10.0

    Triperflourbutylamine

    11.5

    Triphenilmethanol

    14.0

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обновлено: June 2, 2016 автором: globecore