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Esterification of cetyl alcohol with palmitic acid over WO3/Zr-SBA-15 and Zr-SBA-15 catalysts

Mutlu, Vahide Nuran; Yilmaz, Selahattin


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    <subfield code="a">Tungsten loaded and Zr incorporated SBA-15 catalysts (WO3/Zr-SBA-15 and Zr-SBA-15) were developed for esterification of cetyl alcohol and palmitic acid. The influence of the Zr content, tungsten loading amount, calcination temperature, feed composition and catalyst amount has been studied. Higher tungsten loading decreased the acidity due to formation of WO3 crystals whereas-calcination temperature enhanced the acidity by favoring the dispersion of WO. species. Activities of the catalyst changed depending on their amount of Bronsted sites and total number of acid sites. Zr-SBA-15 catalyst which had the highest amount of Bronsted acid sites gave maximum cetyl palmitate yield (63.1%). This catalyst retained its activity up to 3 reuse cycles without significant loss of activity. (C) 2016 Elsevier B.V. All rights reserved.</subfield>
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