TY - JOUR
T1 - Acid natural clinoptilolite
T2 - Structural properties against adsorption/separation of n-paraffins
AU - Rivera, Aramis
AU - Farías, Tania
AU - Ménorval, Louis Charles de
AU - Autié-Castro, Giselle
AU - Yee-Madeira, Hernany
AU - Contreras, José Luis
AU - Autié-Pérez, Miguel
N1 - Funding Information:
The authors thank The Academy of Sciences for the Developing World (TWAS) for the research Grants No. 00-360 RG/CHE/LA and No. 07-016 RG/CHE/LA. Partial financial support from the Pôle Universitaire Européen de Montpellier is also acknowledged. T. Farías and A. Rivera would like to thank the insightful comments of E. Altshuler on the manuscript.
PY - 2011/8/1
Y1 - 2011/8/1
N2 - The employment of an acid natural clinoptilolite (AZH-1) in the adsorption and separation of n-paraffins has been evaluated. Natural clinoptilolite, NZ, was the raw material used to prepare the sodium-exchanged clinoptilolite (AZ) starting from which the AZH-1 sample was obtained by acid treatment. The structural stability of the samples after the applied treatments was demonstrated. The nitrogen adsorption experiments indicated that the acid sample has a homogeneous porous distribution and a considerable increase in the micropore volume with respect to NZ and AZ. The employment of the inverse gas chromatography at infinite dilution (IGCID) allowed studying the adsorption and separation of n-paraffin mixtures on AZH-1. It was also confirmed that the diffusion on AZH-1 took place in an unblocked structure through the A channel of ten members with minimal interactions. The IGCID results demonstrated the capacities of the acid Cuban natural zeolite in the adsorption and separation of n-paraffin mixtures.
AB - The employment of an acid natural clinoptilolite (AZH-1) in the adsorption and separation of n-paraffins has been evaluated. Natural clinoptilolite, NZ, was the raw material used to prepare the sodium-exchanged clinoptilolite (AZ) starting from which the AZH-1 sample was obtained by acid treatment. The structural stability of the samples after the applied treatments was demonstrated. The nitrogen adsorption experiments indicated that the acid sample has a homogeneous porous distribution and a considerable increase in the micropore volume with respect to NZ and AZ. The employment of the inverse gas chromatography at infinite dilution (IGCID) allowed studying the adsorption and separation of n-paraffin mixtures on AZH-1. It was also confirmed that the diffusion on AZH-1 took place in an unblocked structure through the A channel of ten members with minimal interactions. The IGCID results demonstrated the capacities of the acid Cuban natural zeolite in the adsorption and separation of n-paraffin mixtures.
KW - Acid treatment
KW - Adsorption
KW - N-Paraffins
KW - Natural clinoptilolite
KW - Separation
UR - http://www.scopus.com/inward/record.url?scp=79957813858&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2011.04.035
DO - 10.1016/j.jcis.2011.04.035
M3 - Artículo
SN - 0021-9797
VL - 360
SP - 220
EP - 226
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
IS - 1
ER -