Adsorption process for paraxylene purifacation using Cs SSZ-25 adsorbent with benzene desorbent
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United States of America Patent
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Aug 28, 2001
Grant Date -
N/A
app pub date -
Mar 31, 2000
filing date -
Mar 31, 2000
priority date (Note) -
Expired
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Abstract
An adsorption process for the recovery of paraxylene from mixed xylenes using a molecular sieve adsorbent comprising SSZ-25, MCM-22, PSH-3, ERB-1, or ITQ-1. A preferred desorbent for the process is benzene. A hybrid adsorption/crystallization PX purification process is also described using the molecular sieve adsorbent.
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