Imperial College London
Alternate

DrMarcosMillan-Agorio

Faculty of Engineering, Department of Chemical Engineering

Reader in Chemical Engineering
 
 
 
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Contact

 

+44 (0)20 7594 1633marcos.millan

 
 
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Assistant

 

Mrs Sarah Payne +44 (0)20 7594 5567

 
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Location

 

502Roderic Hill BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ji:2018:10.1016/j.ces.2018.06.006,
author = {Ji, G and George, A and Skoulou, V and Reed, G and Millan, M and Hooman, K and Bhatia, SK and Diniz, da Costa JC},
doi = {10.1016/j.ces.2018.06.006},
journal = {Chemical Engineering Science},
pages = {286--296},
title = {Investigation and simulation of the transport of gas containing mercury in microporous silica membranes},
url = {http://dx.doi.org/10.1016/j.ces.2018.06.006},
volume = {190},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - © 2018 Elsevier Ltd This work investigates the effect of condensable Hg vapour on the transport of N2gas across cobalt oxide silica (CoOxSi) membranes. Experimental results suggest that Hg significantly affects N2permeation at 100 and 200 °C, though this effect is negligible at 300 °C. This effect was found to have a correlation with Hg adsorption on CoOxSi xerogels. In order to understand the Hg effect in the transport phenomena of N2permeation, the oscillator model was used to model gas transport through pores with different sizes. By including effective medium theory (EMT), the oscillator model fitted well the experimental results and gave good prediction of mass transfer in ultra-microporous materials with a tri-modal pore size distribution, such as silica membranes. It is postulated that Hg seeks lower level potentials in micro-pores, and therefore Hg molecules tend to block small pores (2.5–4 Å from 2.9 Å), or reduce the average pore size of larger pores (6.7–7.8 Å and 12–14 Å). Although N2permeation decreased with the presence of Hg, it did not decrease when the Hg load was increased by a factor of ten; this strongly suggests the adsorption of Hg molecules in the smaller pores (2.5–4.0 Å), or along the pore wall for the larger pore ranges (6.7–7.8 Å and 12–14 Å).
AU  - Ji,G
AU  - George,A
AU  - Skoulou,V
AU  - Reed,G
AU  - Millan,M
AU  - Hooman,K
AU  - Bhatia,SK
AU  - Diniz,da Costa JC
DO  - 10.1016/j.ces.2018.06.006
EP  - 296
PY  - 2018///
SN  - 0009-2509
SP  - 286
TI  - Investigation and simulation of the transport of gas containing mercury in microporous silica membranes
T2  - Chemical Engineering Science
UR  - http://dx.doi.org/10.1016/j.ces.2018.06.006
VL  - 190
ER  -
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