PROCESS FOR CONVERTING PARAFFIN WITH MODIFIED ZIRCONIA CATALYST
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United States of America Patent
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Oct 17, 2013
filing date -
Sep 23, 2011
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Abstract
A process for converting paraffin by using a modified zirconia catalyst is provided. The process has steps of: (i) providing feed containing n-pentane, n-hexane and more than 2 vol % n-heptane based on the volume of the feed; and (ii) subjecting the feed to isomerization of n-heptane with a modified zirconia catalyst comprising zirconium oxide, sulfate ions, a first metal component and a second metal component. Based on the weight of the catalyst, an amount of the first metal component ranges between 0.1 wt % and 15 wt %, an amount of the second metal component ranges between 0.2 wt % and 3.0 wt %, and an amount of the sulfate ions contain sulfur is less than 1.0 wt %. By using the modified zirconia catalyst with low sulfate content, the process is beneficial to improve iso-C7 selectivity and conversion rate in heptane isomerization.
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