Enhancement of the internal mass transfer under isothermal conditions

Panchenko, M. S.; Dushchenko, V. P.; Panasyuk, A. L.; Mosievich, A. S.; Kaprovich, I. N.

doi:10.1007/bf00829855

Cited by 2 publications

(5 citation statements)

References 2 publications

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“…For an applied voltage difference of 6 kV, a significant enhancement in the adsorption rate behavior is noted. It was suspected that these industrial gel samples might have contained some ionic impurities which are known to affect the adsorption characteristics (Panchenko, 1973). Samples…”

Section: Resultsmentioning

confidence: 99%

“…As observed by Panasyuk et al (1978) in the case of CC14, the adsorption behavior of nonpolar adsorbates seems to be unaffected by applied electric fields. Panchenko et al (1973Panchenko et al ( , 1972 have suggested that the enhancement of adsorption kinetics in porous media is only possible in nonuniform applied fields and that uniform applied fields produce no effect. Panchenko et al (1973) used a uniform field of about 2 kV/cm and saw no effect.…”

Section: Resultsmentioning

confidence: 99%

“…Panchenko et al (1973Panchenko et al ( , 1972 have suggested that the enhancement of adsorption kinetics in porous media is only possible in nonuniform applied fields and that uniform applied fields produce no effect. Panchenko et al (1973) used a uniform field of about 2 kV/cm and saw no effect.…”

Section: Resultsmentioning

confidence: 99%

“…It is suggested that the bulk of the remaining enhancement could also be attributed to the small remaining ion concentration. The residual ions would not only con- tribute towards (V^7)/ but, more importantly, they would increase the diffusion coefficient by lowering the activation energy barrier AQa for surface flow (Panchenko et al, 1973).…”

Section: Discussion Of Resultsmentioning

confidence: 99%

“…Except in cases where corona discharge currents were present (Karpovich et al, 1981) or where the silica gel samples were intentionally saturated with alkali ions, (K+, Ca2+) (Panchenko et al, 1973), Panchenko et al have attributed the enhancement of adsorption rates in porous silica gel to the additional electromagnetic forces brought into play when the applied fields act on the various polarized phases (vapor, adsorbate, adsorbent) of a disperse dielectric. They offer only qualitative arguments to justify their speculations.…”

Section: Introductionmentioning

confidence: 99%

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Study of electric field-induced effects on water vapor adsorption in porous adsorbents

Someshwar¹,

Wilkinson²

1985

Ind. Eng. Chem. Fund.

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Experimental investigations of the effects of electric fields on the adsorption of water vapor on silica gel and alundum catalyst were carried out at 25 °C. The presence of a nonuniform field surrounding the solid particles causes an increase in the rate of adsorption but not the amount absorbed. Presence of alkali metal ions in silica gel has a strong effect. In the absence of these ions field strengths smaller than about 5 X 104 V/cm have little effect. Theoretical analysis of the phenomena indicates that it Is important to compute the local, internal electric fields in the pores rather than the external applied fields.

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Section: Resultsmentioning

confidence: 99%