煅烧
催化作用
棕榈酸
钨
酒
核化学
固体酸
化学
色散(光学)
材料科学
无机化学
有机化学
脂肪酸
光学
物理
作者
Vahide Nuran Mutlu,Selehattin Yılmaz
标识
DOI:10.1016/j.apcata.2016.05.010
摘要
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 WOx species. Activities of the catalyst changed depending on their amount of Brønsted sites and total number of acid sites. Zr-SBA-15 catalyst which had the highest amount of Brønsted acid sites gave maximum cetyl palmitate yield (63.1%). This catalyst retained its activity up to 3 reuse cycles without significant loss of activity.
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