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Role of silica template in the preparation of sulfonated mesoporous carbon catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
41459 45890 2011 7 PDF Available
Title
Role of silica template in the preparation of sulfonated mesoporous carbon catalysts
Abstract

Mesoporous carbon catalysts have received considerable interest in the scientific community because of their tunable porosity, hydrophobic surface, and ease of functionalization with active groups such as –SO3H. The formation of silica templates is a typical method to prepare a mesoporous carbon, but little is understood on its role for effective sulfonation. In this study, silica templates were used to prepare mesoporous sugar char using the confined activation process. The char was functionalized with –SO3H groups before or after removing the silica templates. The roles of the silica templates were evaluated based on the physicochemical properties of the catalysts. The results showed that silica templates provided support to the internal porosity, but prevented the –SO3H groups from effectively reaching the internal surface. The esterification of oleic acid showed that the reactivity of the carbon-based catalysts is dependent on the total acidity, but independent of the surface area. These findings show that carbon-based catalysts are suitable for esterification which is useful for biodiesel production.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (179 K)Download as PowerPoint slideResearch highlights▶ Mesoporous and high surface area glucose char was synthesized. ▶ Mesoporous and high surface area carbon-based catalyst was synthesized. ▶ Carbon catalyst reactivity is dependent on acidity but independent of surface area.

Keywords
Biodiesel; Carbon-based catalysts; Esterification; Sulfonated mesoporous carbon catalysts; Silica templates; Sugar catalyst
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Role of silica template in the preparation of sulfonated mesoporous carbon catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 394, Issues 1–2, 28 February 2011, Pages 25–31
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
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us