The Effect of Contaminant on Xylene Separation by Zeolite Adsorption
Possible contaminants arising from the oxidation of xylene isomers are detrimental to industrial adsorptive xylene separation processes since they lower the selectivity and recovery of p-xylene. A model compound, acetophenone, has been used to simulate the contaminant and it has been shown via pulse...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
1988-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361748800500203 |
| Summary: | Possible contaminants arising from the oxidation of xylene isomers are detrimental to industrial adsorptive xylene separation processes since they lower the selectivity and recovery of p-xylene. A model compound, acetophenone, has been used to simulate the contaminant and it has been shown via pulse tests to adsorb strongly on to a K-BaY zeolite, thereby lowering the selectivity of p-xylene. Although the liquid desorbent PDEB (p-diethylbenzene) was not effective in removing the adsorbed acetophenone, nitrogen at 400°C and 1 atm was effective both in removing the adsorbed acetophenone and regenerating the adsorbent. Measurements of the adsorption capacity of acetophenone have shown that Molecular Sieve 13 X and K-BaY zeolites are both good adsorbents for acetophenone. |
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| ISSN: | 0263-6174 2048-4038 |