NDLI: Sulfated zirconia: an efficient solid acid catalyst for esterification of myristic acid with short chain alcohols

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Catalysis Science & Technology Vol - 2 Issue - 9

Catalysis Science & Technology Vol - 2 Issue - 8

Catalysis Science & Technology Vol - 2 Issue - 7

Catalysis Science & Technology Vol - 2 Issue - 6

Catalysis Science & Technology Vol - 2 Issue - 5

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Catalysis Science & Technology Vol - 2 Issue - 3

Catalysis Science & Technology Vol - 2 Issue - 2

Catalysis Science & Technology Vol -1

Sulfated zirconia: an efficient solid acid catalyst for esterification of myristic acid with short chain alcohols

Content Provider	Royal Society of Chemistry (RSC)
Author	Saravanan, K. Tyagi, Beena Bajaj, H. C.
Copyright Year	2012
Abstract	Sulfated zirconia (SZ) catalysts prepared by a two-step sol–gel method and calcined at 600–700 °C were evaluated for esterification of myristic acid with methanol using varied acid to alcohol ratio, reaction temperature and catalyst concentration. An exceptionally small concentration of SZ catalysts (0.125–0.5 wt% to acid) exhibited 98–100% conversion of myristic acid with methanol at 60 °C after 5 h. The conversion was decreased with an increase in the alkyl chain of alcohol from methanol to butanol, however, similar conversion was achieved by increasing the reaction temperature to 90 °C. The ester formation was selective, irrespective of alcohol and other reaction variables. The calcination temperature has strong influence on the structural, textural and acidic features and thus on the activity and re-usability of SZ catalysts. The reaction is sensitive to moisture present in methanol or reaction mixture. The studied reaction is Brönsted acid catalyzed and the SZ catalyst having higher number of Brönsted acid sites was re-used successfully without significant loss in activity; whereas the SZ catalyst having lower number of Brönsted acid sites showed a decrease in activity (∼28%) after five reaction cycles. The results clearly indicated the necessity of higher number of Brönsted acid sites for better performance and recycling of the SZ catalysts for esterification of myristic acid with methanol under the conditions studied.
Starting Page	2512
Ending Page	2520
Page Count	9
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	2
Issue Number	12
Journal	Catalysis Science & Technology
DOI	10.1039/c2cy20462b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ester Acid Calcination Butanol Zirconium dioxide Methanol
Content Type	Text
Resource Type	Article
Subject	Catalysis

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