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Esterification of octanoic acid using SiO2 doped sulfated aluminum-based solid acid as catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
50114 46780 2016 4 PDF Available
Title
Esterification of octanoic acid using SiO2 doped sulfated aluminum-based solid acid as catalyst
Abstract

•We reported a new solid acid of SO42 −/Al2O3-SiO2.•SiO2 as additive improved the acid conversion and methyl octanoate yield.•The optimal acid conversion and methyl octanoate yield were 99.11% and 99.07%.•SAS-5 could be recycled for nine times with considerable esterification activity.

In this paper, SO42 −/Al2O3-SiO2 (SAS) was prepared and used for the esterification of octanoic acid with methanol. The effect of introduction of SiO2 was characterized by nitrogen sorption, ICP-AES, XRD, NH3-TPD, TG, FTIR and FTIR-pyridine adsorption. The results demonstrated that the doping of SiO2 resulted in the increase of BET surface areas and amount of surface sulfur species which led to an increase of acid sites especially Brönsted acid sites, which consequently boosted the catalytic esterification activity. In addition, the introduction of SiO2 can also increase the thermal stability of SO42 − and its interaction with Al2O3 support which resulted in the alleviation of catalyst deactivation.

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Keywords
Octanoic acid; Esterification; Sulfated aluminum-based solid acid; SiO2 promoter
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Esterification of octanoic acid using SiO2 doped sulfated aluminum-based solid acid as catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 82, 5 July 2016, Pages 32–35
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
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