TY  - JOUR
AU  - Vu Tung Lam Tran
AU  - Gelin, Patrick
AU  - Ferronato, Corinne
AU  - Mascunan, Pascale
AU  - Rac, Vladislav
AU  - Chovelon, Jean-Marc
AU  - Postole, Georgeta
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5059
AB  - Commercial activated carbons (ACs) have been studied in dynamic adsorption of octamethylcyclotetrasiloxane (D4) in both dry and wet conditions. 1000 ppm (v/ v) D4 with N-2 as carrier gas and relative humidity (RH) up to 70% were used. Samples were characterized by physicochemical techniques such as N-2 and H2O adsorption/desorption at -196 and 20 degrees C, respectively, XPS, Boehm titration, chemical and elemental analysis, thermogravimetric measurements. No correlation between adsorption capacity in dry conditions and textural properties could be established. In wet conditions, the presence of hydrophilic sites preferentially adsorbing H2O strongly decreases the ability of ACs to adsorb D4. The regenerability by thermal treatment after D4 adsorption in dry conditions was also addressed and followed by gas chromatography and in situ DRIFTS. The D4 polymerization into polysiloxanolate/PDMS was found to proceed on ACs containing alkali metals (K, Na) as revealed by the observed release of their decomposition products during the thermodesorption treatment. This property is detrimental to the regenerability of the AC by blockage of its porosity. The eventual formation of polysiloxanalolate type species during the adsorption could also be responsible for limiting the D4 uptake by partial blockage of the AC porosity.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Siloxane adsorption on activated carbons: Role of the surface chemistry on sorption properties in humid atmosphere and regenerability issues
EP  - 832
SP  - 821
VL  - 371
DO  - 10.1016/j.cej.2019.04.087
ER  - 

@article{
author = "Vu Tung Lam Tran and Gelin, Patrick and Ferronato, Corinne and Mascunan, Pascale and Rac, Vladislav and Chovelon, Jean-Marc and Postole, Georgeta",
year = "2019",
abstract = "Commercial activated carbons (ACs) have been studied in dynamic adsorption of octamethylcyclotetrasiloxane (D4) in both dry and wet conditions. 1000 ppm (v/ v) D4 with N-2 as carrier gas and relative humidity (RH) up to 70% were used. Samples were characterized by physicochemical techniques such as N-2 and H2O adsorption/desorption at -196 and 20 degrees C, respectively, XPS, Boehm titration, chemical and elemental analysis, thermogravimetric measurements. No correlation between adsorption capacity in dry conditions and textural properties could be established. In wet conditions, the presence of hydrophilic sites preferentially adsorbing H2O strongly decreases the ability of ACs to adsorb D4. The regenerability by thermal treatment after D4 adsorption in dry conditions was also addressed and followed by gas chromatography and in situ DRIFTS. The D4 polymerization into polysiloxanolate/PDMS was found to proceed on ACs containing alkali metals (K, Na) as revealed by the observed release of their decomposition products during the thermodesorption treatment. This property is detrimental to the regenerability of the AC by blockage of its porosity. The eventual formation of polysiloxanalolate type species during the adsorption could also be responsible for limiting the D4 uptake by partial blockage of the AC porosity.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Siloxane adsorption on activated carbons: Role of the surface chemistry on sorption properties in humid atmosphere and regenerability issues",
pages = "832-821",
volume = "371",
doi = "10.1016/j.cej.2019.04.087"
}

Vu Tung Lam Tran, Gelin, P., Ferronato, C., Mascunan, P., Rac, V., Chovelon, J.,& Postole, G.. (2019). Siloxane adsorption on activated carbons: Role of the surface chemistry on sorption properties in humid atmosphere and regenerability issues. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 371, 821-832.
https://doi.org/10.1016/j.cej.2019.04.087

Vu Tung Lam Tran, Gelin P, Ferronato C, Mascunan P, Rac V, Chovelon J, Postole G. Siloxane adsorption on activated carbons: Role of the surface chemistry on sorption properties in humid atmosphere and regenerability issues. in Chemical Engineering Journal. 2019;371:821-832.
doi:10.1016/j.cej.2019.04.087 .

Vu Tung Lam Tran, Gelin, Patrick, Ferronato, Corinne, Mascunan, Pascale, Rac, Vladislav, Chovelon, Jean-Marc, Postole, Georgeta, "Siloxane adsorption on activated carbons: Role of the surface chemistry on sorption properties in humid atmosphere and regenerability issues" in Chemical Engineering Journal, 371 (2019):821-832,
https://doi.org/10.1016/j.cej.2019.04.087 . .