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Functionalized Carbon Nanofibers as Solid‐Acid Catalysts for Transesterification
Author(s) -
Stellwagen Daniel R.,
van der Klis Frits,
van Es Daan S.,
de Jong Krijn P.,
Bitter Johannes H.
Publication year - 2013
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201300372
Subject(s) - sulfonic acid , catalysis , transesterification , methanol , surface modification , carbon nanofiber , chemistry , substrate (aquarium) , carbon fibers , organic chemistry , triolein , materials science , lipase , oceanography , composite number , composite material , enzyme , geology
Carbon nanofibers (CNFs) were functionalized with aryl sulfonic acid groups using in situ diazonium coupling. The use of diazonium coupling yielded an acidic carbon material, in which the introduced acidic groups are readily accessible to the triglyceride substrate. The material is an efficient catalyst for the transesterification of triolein and methanol, outperforming conventional sulfonated carbons in both stability and activity per acid site. Upon comparing CNFs with varying degrees of functionalization, a linear correlation between sulfonic acid sites and catalytic performance was found.