liquids是什麼意思uids在線翻譯讀音例句

FluidPhaseEquilibria231(2005)38–43

Measurementandcorrelationofvapor–liquidequilibriaofbinary

systemscontainingtheionicliquids[EMIM][(CF

3

SO

2

)

2

N],

[BMIM][(CF

3

SO

2

)

2

N],[MMIM][(CH

3

)

2

PO

4

]andoxygenated

organiccompoundsrespectivelywater

RyoKato,JurgenGmehling

∗

CarlvonOssietzkyUniversitatOldenburg,TechnischeChemie,CarlvonOssietzkyStrasse5-11,

D-26111Oldenburg,FederalRepublicofGermany

Received16November2004;receivedinrevisedform3January2005;accepted4January2005

Abstract

Vapor–liquidequilibria(VLE)havebeenmeasuredformethanol,ethanol,2-propanol,acetone,tetrahydrofuran(THF)andwaterwith

theionicliquids1-et李白的诗歌风格 hyl-3-methyl-imidazoliumbis(trifluoromethylsulfonyl)imide[EMIM][(CF

3

SO

2

)

2

N],1-butyl-3-methyl-imidazolium

bis(trifluoromethylsulfonyl)imide[BMIM][(CF

3

SO

2

)

2

N],1-methyl-3-methyl-imidazoliumdimethylphosphate[MMIM][(CH

3

)

2

PO

4

]at

353.15Kwiththehelpofacomputer-drivenstaticapparatus.

Forwateramiscibilitygapwasobservedwith[EMIM][(CF

3

SO

2

)

2

N]and[BMIM][(CF

3

SO

2

)

2

N]at353.15K,fortheoxygenatedcompounds

(acetone,alcoholsandTHF)orTHFpositivedeviationfromRaoult’slawwasobserved,very

smallactivitycoefficientsatinfinitedilution∞

i

wereobservedforwaterandalcoholswith[MMIM][(CH

3

)

2

PO

4

].

ativemeandeviationsbetweenthemeasuredandpredicted

pressuresobtainedusingtheUNIQUACmodelare4.7%.

htsreserved.

Keywords:Ionicliquids;Vapor–liquidequilibria;Correlation;UNIQUAC

uction

Thispaperisacontinuationofourpapersonthesystematic

measurementofthermodynamicdata(VLE,HE,gassolubil-

ities,

∞

)ucturesofthe

cationsandtheanionsoftheionicliquidsinvestigatedinthis

workareshowninTable1.

Inpreviouspapers,alreadyinfinitedilutionactiv-

itycoefficientsforvarioussolutesintheionicliquids

([MMIM][(CF

3

SO

2

)

2

N],[EMIM][(CF

3

SO

2

)

2

N],[BMIM]

[(CF

3

SO

2

)

2

N],[EMIM][C

2

H

5

OSO

3

],[MMIM][CH

3

SO

4

],

[MMIM][CH

3

OC

2

H

4

SO

4

],[MMIM][(CH

3

)

2

PO

4

],[C

5

H

5

∗

.:+494417983831;fax:+494417983330.

E-mailaddress:******************.(ng).

NC

2

H

5

][(CF

3

SO

2

)

2

N]and[C

5

H

5

NH][C

2

H

5

OC

2

H

4

OSO

3

])

werereported[1,2].Furt溪云初起日沉阁的下一句 hermoreapaperonbinaryvapor–

liquidequilibriaVLEandexcessenthalpiesHEfornon-polar

hydrocarbonsinionicliquids[3]andapaperoftheVLEbe-

haviorofternarysystemsisavailable[4].Uptillnowmore

than7500experimentaldatapointsforionicliquidsarestored

intheDortmundDataBank[5].Thestoreddatashouldbe

usedforthedevelopmentandthetestofpredictivemodels

(fiedUNIFAC(Do)[6],COSMO-RS(Ol)[7]).

alsandpurit虽乘奔御风不以疾也翻译 ies

Methanol,ethanol,2-propanol,acetoneandtetrahydrofu-

ranwerepurchasedfromFlukaChemie,ScharlauChemie

0378-3812/$–seefrontmatterhtsreserved.

doi:10.1016/j.fluid.2005.01.002

,ng/FluidPhaseEquilibria231(2005)38–4339

Table1

Ionicliquidsinvestigatedinthiswork

NameStructure

SolventAbbreviationCationAnion

1-Ethyl-3-methyl-imidazoliumbis(trifluoromethylsulfonyl)imide[EMIM][BTI]

1-Butyl-3-methyl-imidazoliumbis(trifluoromethylsulfonyl)imide[BMIM][BTI]

1-Methyl-3-methyl-imidazoliumdimethylphosphate[MMIM][(CH

3

)

2

PO

4

]

Table2

Vapor–liquidequilibriaforacetone(1),2-propanol(1),tetrahydrofuran(1)andwater(1)with[EMIM][(CF

3

SO

2

)

2

N](2)at353.15K

Acetone(1)2-Propanol(1)Tetrahydrofuran(1)Water(1)

x

1

(–)P(kPa)x

1

(–)P(kPa)x

1

(–)P(kPa)x

1

(–)P(kPa)

0.0131.140.0121.730.0131.940.0293.19

0.0383.480.0243.210.0263.690.0606.45

0.0544.830.0364.840.0395.450.0899.54

0.0686.070.0496.500.0547.430.14515.30

0.0958.510.0618.080.07410.060.19320.15

0.15214.880.09512.540.11015.110.27027.38

0.20821.660.13517.880.14920.670.35134.27

0.27330.110.18524.430.19827.900.43940.72

0.33939.810.23931.420.24835.530.52045.50

0.40250.260.29538.610.30143.780.59647.33

0.46561.860.35445.940.35652.680.66047.35

0.52574.280.41252.860.41162.010.71647.35

0.58487.870.47559.810.47172.370.76847.36

0.637101.460.53365.840.52782.500.81047.36

0.685114.730.58770.900.58593.140.84347.36

0.726127.220.63674.960.640103.660.87047.36

0.763138.750.67978.220.691113.370.89247.37

0.795149.160.71880.810.722118.900.91047.37

0.822158.370.74082.080.735121.580.92447.38

0.846166.290.75282.820.776129.090.93547.38

0.865173.070.78284.380.778129.130.94547.39

0.897183.740.80285.290.813135.470.96747.38

0.938196.920.80985.620.834138.700.98047.38

0.967205.800.85987.570.844140.560.98947.37

0.984210.740.90489.040.880145.350.99447.38

0.993213.250.93689.960.916149.591.00047.37

0.997214.400.96090.640.947152.31

0.999214.940.97591.140.964153.53

1.000215.160.98691.520.974154.16

0.99291.860.983154.64

0.99692.050.988154.97

0.99892.160.992155.23

0.99992.210.995155.47

1.00092.260.997155.64

0.999155.76

0.999155.83

1.000155.92

,ng/FluidPhaseEquilibria231(2005)38–43

itiesofthesecompoundswere

between99.5and99.9%.Beforethemeasurementtheoxy-

genatedorganiccompoundswerefurtherpurifiedbydistil-

icliquidsinvestigatedinthis

scheid.1Prior

tothemeasurements,allionicliquidswerepurifiedby

vacuumevaporationtoremovethelasttracesofvolatile

impurities.

mentalsection

A闻武均州报已复西京阅读理解答案 computer-drivenstaticapparatus[8,9]wasused

paratuscanbeap-

pliedforthemeasurementofreliableisothermalP–x-data

vacuationofthether-

mostatedequilibriumcellexactlyknownamountsofthe

degassedcomponentsareinjectedwiththehelpofstep-

peraturein

thethermostatbathwasmeasuredusingaHARTSci-

entific1506thermometer(Pt100sensorpre-calibrated

byNIS《史记》全文及翻译 T)withinssuremea-

surementsareperformedusingaDruckpressuresensor

PDRC900SERIESwithamaximumpressureof350kPa.

Thereproducibilityisapproximately0.005%ofthemaxi-

mumpressure.

sanddiscussion

InTables2–4theexperimentalvapor–liquidequilibria

(VLE)fortheoxygenatedhydrocarbonsacetone,methanol,

ethanol,2-propanol,tetrahydrofuranandwaterwith1-ethyl-

3-methyl-imidazoliumbis(trifluoromethylsulfonyl)imide

[EMIM][(CF

3

SO

2

)

2

N],1-butyl-3-methyl-imidazoliumbis-

(trifluoromethylsulfonyl)imide[BMIM][(CF

3

SO

2

)

2

N]and

1-methyl-3-methyl-imidazoliumdimethylphosphate[MM-

IM][(CH

3

)

2

PO

4

]ivitycoefficientsat

infinitedilutionderivedfromthefittedP–x-datameasured

usingpolynomialsarelistedinTable5.

IngraphicalformtheP–x-dataofacetone,2-propanol,

tetrahydrofuranandwaterwith[EMIM][(CF

3

SO

2

)

2

N]and

[BMIM][(CF

3

SO

2

)

2

N]areshowninFig.1togetherwith

acetone,2-propanolandtetrahydrofuranformhomoge-

neousmixtureswiththetwoionicliquids,forwatera

miscibilitygapisobservedwithbothionicliquidsat

eseenthemiscibilitygapwithwa-

terincreaseswhengoingfrom[EMIM][(CF

3

SO

2

)

2

N]to

[BMIM][(CF

3

SO

2

)

2

N],thismeanswiththelengthofthe

alkylchain.

1InstitutfurTechnischeChemieundMakromolekulareChemieder

RWTHAachen.

Table3

Vapor–liquidequilibriaforacetone(1),2-propanol(1)andwater(1)with

[BMIM][(CF

3

SO

2

)

2

N](2)at353.15K

Acetone(1)2-Propanol(1)Water(1)

x

1

(–)P(kPa)x

1

(–)P(kPa)x

1

(–)P(kPa)

0.0564.920.0373.850.0495.32

0.0897.270.0747.250.09710.18

0.14612.820.11511.580.19220.07

0.19618.590.14915.650.26427.00

0.24124.180.18019.240.34134.49

0.34036.460.26228.280.45843.68

0.42249.810.34037.420.56346.31

0.50465.450.42447.220.65746.66

0.57580.910.50556.320.73346.82

0.63896.670.58064.080.79346.94

0.693万壑树参天千山响杜鹃 112.260.64470.280.83947.00

0.741126.600.69975.210.87447.05

0.783140.780.75079.200.90247.07

0.819153.050.79282.150.92347.09

0.848163.690.82784.290.93947.11

0.865170.130.85685.840.95047.12

0.872172.530.86286.250.96047.13

0.8921菊组词语 79.770.87986.980.96747.15

0.907185.160.89887.830.97247.15

0.909185.730.90588.120.97747.16

0.922190.540.91488.52

0.934194.480.92789.00

0.941196.860.93789.41

0.943197.640.94089.44

0.950199.850.94589.72

0.955201.600.95189.93

0.973207.000.95790.16

0.990211.930.97290.60

0.996213.960.98991.33

0.999214.720.99691.71

1.000215.040.99991.92

1.00091.99

InFig.2thecorrelatedandexperimentalP–x-data

formethanol,ethanol,acetone,tetrahydrofuranandwa-

terwith1-methyl-3-methyl-imidazoliumdimethylphosphate

[MMIM][(CH

3

)

2

PO

4

]early

idealorpositivedeviationfromRaoult’slawisobservedfor

thesystemswithacetone(

∞

1

=0.98)andtetrahydrofuran

(

∞

1

=3.21),strongnegativedeviationisobservedforthe

systemswithwater(

∞

1

=0.028),methanol(

∞

1

=0.029)and

ethanol(

∞

1

=0.115).Inspiteoftherelativelysmallpositive

deviationfromRaoult’slawamiscibilitygapisfoundforthe

ansfor

thesystemwithacetone,that

∞

1

becomeslargerthanunity

ydifferentactiv-

itycoefficientsatinfinitedilutionresultinahighselectivity

of[MMIM][(CH

3

)

2

PO

4

]fortheseparationofTHF/waterby

extractivedistillation.

Figs.3and4showacomparisonoftheP–x-data

forwaterrespectivelyacetonewiththethreeionicliq-

ediagramsitcan

beseenthatwaterinthepresenceofthedimethylphos-

phateanion[(CH

3

)

2

PO

4

]showsstrongnegativedevia-

tionfromRaoult’slawincontrasttothebehaviorinthe

,ng/FluidPhaseEquilibria231(2005)38–4341

Table4

Vapor–liquidequilibriaforacetone(1),methanol(1),ethanol(1),tet余秋雨的散文作品 rahydrofuran(1)andwater(1)with[MMIM][(CH

3

)

2

PO

4

](2)at353.15K

Acetone(1)Methanol(1)Ethanol(1)Tetrahydrofuran(1)Water(1)

x

1

(–)P(kPa)x

1

(–)P(kPa)x

1

(–)P(kPa)x

1

(–)P(kPa)x

1

(–)P(kPa)

0.04610.110.1070.660.0340.530.0219.670.0370.09

0.0819.130.1721.270.0660.980.05121.200.0780.14

0.12728.270.2431.920.0971.440.07732.280.1130.20

0.16437.470.3052.890.1352.070.10341.640.1820.33

0.19346.110.3753.920.1722.700.13956.740.2730.59

0.30880.350.4947.260.2724.820.2397.540.4321.57

0.388112.720.5812.080.3677.550.291124.040.5553.45

0.462142.770.65819.130.45511.070.359150.340.6566.74

0.535169.570.71529.970.53915.970.435157.670.73811.56

0.602190.770.76245.750.61822.960.512157.750.80417.78

0.634205.920.80365.180.68531.980.585157.780.85124.19

0.634205.820.83绝句古诗带拼音版 685.440.70935.940.634157.880.88529.84

0.634205.730.862104.280.70935.930.634157.870.88630.72

0.684212.470.883120.140.70935.910.634157.870.90934.41

0.733214.980.883120.130.73942.460.651157.800.9134.28

0.78215.990.883120.130.75746.050.689157.850.92737.59

0.823215.990.89129.650.78353.300.705157.820.92937.99

0.868215.850.92147.350.80458.530.745157.850.94741.07

0.896215.740.944160.660.81863.370.75157.830.96243.45

0.917215.650.962169.120.81863.370.75157.820.97445.09

0.933215.560.975174.630.81863.370.75157.810.98346.16

0.946215.480.985178.130.84972.140.8157.840.98946.71

0.969216.680.992180.570.88984.680.85157.830.99347.24

0.992215.470.996181.460.92294.160.893157.830.99647.48

0.993216.740.997181.960.947100.090.926157.820.99847.75

0.995215.450.998182.140.965103.750.951157.830.99947.77

0.996216.840.999182.380.979106.090.97157.840.99947.78

0.997215.471.000182.610.99107.660.984157.850.99947.81

0.998216.900.994108.240.992157.841.00047.82

0.998215.430.997108.580.995157.84

0.999216.930.998108.740.997157.83

1.000216.820.999108.900.998157.84

1.000109.081.000157.86

twoionicliquidswiththe[(CF

3

SO

2

)

2

N]anion,wherea

ositehappensforacetone.

WhilenegativedeviationfromRaoult’slawisobserved

forthetwoimidazoliumbis(trifluoromethylsulfonyl)imide

compoundsamiscibilitygapoccurswith[MMIM]

[(CH

3

)

2

PO

4

].

Table5

Activitycoefficientsatinfinitedilutionfordifferentsolvents(1)in

[EMIM][(CF

3

SO

2

)

2

N],[BMIM][(CF

3

SO

2

)

2

N],[MMIM][(CH

3

)

2

PO

4

](2)

derivedfromVLEdataat353.15K

Solute(1)

∞

1

(–)

[EMIM][BTI][BMIM][BTI][MMIM][(CH

3

)

2

PO

4

]

Methanol––0.029

Ethanol––0.115

2-Propanol1.421.10–

Acetone0.4380.4060.980

Tetrahydrofuran0.800–3.21

Water2.322.270.028

TheexperimentalVLEdatawerefittedbytheUNIQUAC

ativevanderWaalspropertiesrandqofthe

UNIQUACmodelfortheionicliquidswereestimatedfrom

Bondi[10].Fortheothercompounds,thevanderWaals

propertiesweretakenfromtheDortmundDataBank[5].

lowingobjec-

tivefunctionwasusedforfittingtherequiredUNIQUAC

Table6

RelativevanderWaalsparametersforUNIQUAC

Componentrq

[EMIM][BTI]9.8908.780

[BMIM][BTI]11.2010.20

[MMIM][(CH

3

)

2

PO

4

]7.1625.844

Methanol1.4311.432

Ethanol2.1051.972

2-Propanol2.7892.508

Tetrahydrofuran2.9412.720

Acetone2.5732.336

Water0.9201.400

,ng/FluidPhaseEquilibria231(2005)38–43

mentalandcorrelatedvapor–liquidequilibriaofacetone(1),

2-propanol(1),water(1),tetrahydrofuran(1)in([EMIM][(CF

3

SO

2

)

2

N](2)

resp.[BMIM][(CF

3

SO

2

)

2

N])(2)at353.15K.

parameters:

F=

nw

i=1

P

i,cal

−P

i,exp

P

i,exp

2

(1)

fittedbinary

UNIQUACparametersg

12

andg

21

(cal/mol)arelistedin

mentalandcorrelatedvapor–liquidequilibriaofmethanol

(1),ethanol(1),water(1),acetone(1)andtetrahydrofuran(2)in

[MMIM][(CH

3

)

2

PO

4

](2)at353.15K.

mentalandcorrelatedvapor–liquidequilibriaofwater(1)

intheionicliquids(1)([MMIM][(CH

3

)

2

PO

4

],[EMIM][(CF

3

SO

2

)

2

N]and

[BMIM][(CF

3

SO

2

)

2

N])at353.15K.

nrelativedeviationsbetweenexperimental

andcorrelateddatais4.7%.ThecorrelatedresultsforVLE

areingoodagreementwiththeexperimentaldataeveninthe

miscibilitygap.

mentalandcorrelatedvapor–liquidequilibriaofacetone(1)

intheionicliquids(2)[MMIM][(CH

3

)

2

PO

4

],[EMIM][(CF

3

SO

2

)

2

N]and

[BMIM][(CF

3

SO

2

)

2

N]at353.15K.

,ng/FluidPhaseEquilibria231(2005)38–4343

Table7

BinaryUNIQUACparameters

Component(1)g

12

(calmol

−1

)g

21

(calmol

−1

)AAD(%)

[EMIM][(CF

3

SO

2

)

2

N](2)

2-Propanol239.8443.2664.8

Acetone−333.35333.332.6

Tetrahydrofuran562.48−310.414.6

Water−55.071791.012.2

[BMIM][(CF

3

SO

2

)

2

N](2)

2-Propanol286.88−36.3761.6

Acetone−325.89326.122.0

Water−25.259847.486.6

[MMIM][(CH

3

)

2

PO

4

](2)

Methanol−575.99−684.628.8

Ethanol−140.20−484.594.1

Acetone12364−568.976.2

Tetrahydrofuran1576.0−318.314.5

Water−704.91−748.118.3

sion

ThermodynamicpropertiesinparticularVLEdataarere-

quiredforthedevelopmentofreliablepredictivemodelsfor

workVLEdatafor12sys-

temsconsistingofoxygenatedhydrocarbonsandwaterwith

ionicliquidsweremeasuredat353K.

TheexperimentalVLEdatawerecorrelatedusingthe

licationofthebinarygE-model

parametersforthepredictionofternaryVLEdata[4]will

show,ifthecommongE-modelscanbeappliedsuccessfully

alsoforsystemswithionicliquids.

IfgE-modelswillallowthepredictionofhighersystems

withionicliquids,itwouldbeinterestingtochecktheperfor-

manceofgroupcontributionmodels,alUNIFAC,

modifielopmentof

predictivemodelswouldbeinparticulardesirableforthe

selectionofthemostsuitableionicliquidforextractivedis-

tillation,thisde-

velopmentworkstillmuchmoreexperimentaldataforthe

differentcationsandanionsarerequired.

Listofsymbols

Fobjectivefunctionforfittingthebinaryinteraction

parameters

gij

binaryinteractionparameteroftheUNIQUAC

model

HEexcessenthalpy

nwnumberofdatapoints

Ppressure

qvanderWaalssurfaceareaparameter

rvanderWaalsvolumeparameter

VLEsumoftherelativedeviationsforVLE

xmolefractionintheliquidphase

Greekletter

∞

activitycoefficientatinfinitedilution

Subscripts

calcalculatedvalue

expexperimentalvalue

icomponent

Acknowledgment

TheauthorsaregratefultoDeutscheForschungsgemein-

schaft(DFG)forfinancialsupportofthisstudy.

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