Solvent Design for Chemical Reactions

Wong, K. F.; Eckert, C. A.

doi:10.1021/i260032a021

Cited by 27 publications

(19 citation statements)

References 16 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The liquid-phase Diels-Alder dimerization of cyclopentadienc to form a-dicyclopentadiene at 25°C has been studied in a number of solvents. Solvent effects have also been predicted by Wong and Eckert (1969) using the Bransted-Bjerrum relationship in conjunction with the regular solution theory of Scatchard and Hildebrand. From Eq.…”

Section: Resultsmentioning

confidence: 99%

“…A comparison of measured solvent effects with those calculated by Wong and Eckert and those predicted using UNIFAC are presented in Figure 1. References for the experimental data are compiled by Wong and Eckert (1969). The competitive hydrogenation of cyclohexene and acetone over a nickel catalyst at 25°C has been studied in a number of different solvents by Jungers et al (1958).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Estimation of solvent effects on chemical reaction rates using UNIFAC group contribution

Paulaitis

1981

AIChE Journal

View full text Add to dashboard Cite

for the micropore dausivity, the Di values given in Table 2 correspond to ro = 10 microns. Such dgusivities are of the order of 1 x lo-" m2/s and are somewhat lower for the more strongly adsorbed SO? and H2S than for COP. Values of the same magnitude were reported by Chihara et al. (1978)for rare-gas adsorbates in molecular-sieving carbon and by Walker et al. (1966) for micropore transport of COP in coal particles. The activation energies obtained from an Arrhenius plot of the DJr:, values increase from 1.4 for CO, to 1.8 for H2S and to 5.0 kcalimol for SOz. The lower micropore digusivities for H2S and SO, are expected in view of the stronger attraction between wall atoms and absorbate molecule for t h e sulfur-containing gases.Further, such results would not be expected if the micropore transport occurred by a pore-volume rather than a surface transport process.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Estimation of solvent effects on chemical reaction rates using UNIFAC group contribution

Paulaitis

1981

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…Expressions of this type have proven quite useful in predicting and correlating kinetic solvent effects for many nonpolar and polar molecular reactions (Eckert, 1967;Wong andEckert, 1969,1970;Eckert et al, 1974). The dielectric constant is an important property for kinetic solvent effects in reactions with significant electrical effects.…”

Section: Discussionmentioning

confidence: 99%

High-pressure kinetics and solvent effects on a halide exchange reaction

Glugla¹,

Byon²,

Eckert³

1985

Ind. Eng. Chem. Fund.

View full text Add to dashboard Cite

The rate of the halide exchange reaction of n-propyl bromide with iodide ion was measured in a series of protic and polar aprotic solvents over a pressure range of ambient to 1500 bar, with a few data to pressures as high as 6000 bar. The rate was fastest, the activation volume the most positive, and the equilibrium constant lowest in the least polar aprotic solvent, 4-methyC2-pentanone, while protic solvents such as low molecular weight alcohols gave much slower rates, more negative activation volumes, and higher equilibrium constants. The partial molal volume of the transition state is calculated in various solvents and shows that the solvent interaction with the small halide ion dominates in determining the very large solvent effect on reactions of this type.

show abstract

“…(16) lassen sich die Grenzwerte von ts/tM fur [MI + 0 und[S] + 0 ableiten: lim t S / t M = 0,5(vS/vM $-1 ) (18). ISlF+o Da Vs/VM der ublicherweise verwendeten Losungsmittel/ Monomer-Kombinationen nicht zu stark von 1 abweichen, sind beide Grenzwerte annahernd gleich.…”

unclassified

Die Konzentrationsabhängigkeit von Geschwindigkeits‐„Konstanten”︁ als Ursache scheinbarer Abweichungen vom idealen kinetischen Verhalten bei radikalischen Polymerisationen

Sandner

1981

Acta Polymerica

View full text Add to dashboard Cite

Yon 1 abweichende Exponenten der Monomerkonzentration in der Brnttogeschwindigkeitsgleichurig lassen sich fur radikalische Homopolymerisationen von Styren, Methylmethacrylat und eine Reihe von AUkylmethacrylaten mit Gnterschieden in den Molvolumina der Monomere und Losungsmittel interpretieren. Fur Vergleiche von Monomer/ Losungsmittel-Systernen mit verschiedenen gesamtmolaren Konzentrationen sind die molenbruchbczogenen, konzentrationsanabhangigen Geschwindigkeitskonstallten geeignet. h'onyeunipayuoxuaa aaeucu~ocmb ,,~oncmaum' x u~e r n u v e c~o~o noseaenuz npu peaxyusx paauxanbnoG nonu~epuaayuu cxopocmu xan' npuvulla xaMyiituxca ommoueuuii om uaeanauozo B BIIAe IIPII'4IIHbI 3HarIeHAfi He PaBHbIX 1 AJlH CTeIIeHH MOHOMepHOfi KOHqeHTpaqHH B YPaBHeHHA 6PYTTO-CKOPOCTH IIpM peaKqHRX paAIIKaJIbH0i rOMOIIOJlHMepH3aI[IIH CTHpOJla, MeTHJlMeTaKpIIJIaTa II PRAa aJIKIIJIMeTaKPHJIaTOB MOWHO CrIHTaTh pa3JlHYIIR MOJIbHbIX 06'6eMOB MOHOMePOB II PaCTBOpIITeJIefi. g J I R CpaBHeHHH CIICTeM MOHOMep/paCTBOpHTeJIb C pa3JIIIqHbIMH 0 6 4~~~ MOJIRPHbIMM KOHlJeHTpaqHRMII OKa3bIBaIOTCR I I P M r O~H b I M I I IIpHBeAeHHbIe K MOJIRPHOfi none He 3aBIICR~He OT KOHqeHTPalW4 KOIICTaHTbI CKOPOCTH.

show abstract

Solvent Design for Chemical Reactions

Cited by 27 publications

References 16 publications

Estimation of solvent effects on chemical reaction rates using UNIFAC group contribution

Estimation of solvent effects on chemical reaction rates using UNIFAC group contribution

High-pressure kinetics and solvent effects on a halide exchange reaction

Die Konzentrationsabhängigkeit von Geschwindigkeits‐„Konstanten”︁ als Ursache scheinbarer Abweichungen vom idealen kinetischen Verhalten bei radikalischen Polymerisationen

Contact Info

Product

Resources

About