TY - JOUR
T1 - Study on characteristics and preparation of bindeiless BaX granules for separation of p-xylene
AU - Jin, Jung Hyun
AU - Suh, Jeong Kwon
AU - Hong, Ji Sook
AU - Kim, Beum Sik
AU - Lee, Chang Ha
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009/2
Y1 - 2009/2
N2 - In this study, binderless zeolite BaX granule, an effective adsorbent for the separation of p-xylene was made. This adsorbent which has a sufficient strength, high specific surface area and selectivity to p-xylene was prepared by various steps, such as granulation process, calcination, binderless treatment, ion-exchange, and activation. In the granulation, the concentration of colloidal silica solution was controlled in order to confirm the effect of SiCO 2 contents after binderless treatment. As a result, we confirmed that the compressive strength of granule after binderless treatment was increasing with increasing proportion of SiO2 in the granule. And then Na-ion in granule was exchanged with Ba-ion by successive batch ion-exchange process. And then prepared adsorbents were tested for p-xylene separation by batch adsorption at 90 °C. As a results of batch adsortion test, we confirmed that prepared adsorbents have a high selectivity to p-xylene. Also, it could be conformed that the prepared binderless zeolite BaX has a sufficient compressive strength (0.450 kgf), high specific surface area (647.57 m2/g), high crystallinity (98.5% compared with zeolite NaX powder), and selectivity to p-xylene.
AB - In this study, binderless zeolite BaX granule, an effective adsorbent for the separation of p-xylene was made. This adsorbent which has a sufficient strength, high specific surface area and selectivity to p-xylene was prepared by various steps, such as granulation process, calcination, binderless treatment, ion-exchange, and activation. In the granulation, the concentration of colloidal silica solution was controlled in order to confirm the effect of SiCO 2 contents after binderless treatment. As a result, we confirmed that the compressive strength of granule after binderless treatment was increasing with increasing proportion of SiO2 in the granule. And then Na-ion in granule was exchanged with Ba-ion by successive batch ion-exchange process. And then prepared adsorbents were tested for p-xylene separation by batch adsorption at 90 °C. As a results of batch adsortion test, we confirmed that prepared adsorbents have a high selectivity to p-xylene. Also, it could be conformed that the prepared binderless zeolite BaX has a sufficient compressive strength (0.450 kgf), high specific surface area (647.57 m2/g), high crystallinity (98.5% compared with zeolite NaX powder), and selectivity to p-xylene.
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M3 - Article
AN - SCOPUS:60749100958
VL - 20
SP - 80
EP - 86
JO - Applied Chemistry for Engineering
JF - Applied Chemistry for Engineering
SN - 1225-0112
IS - 1
ER -