Molecules 2013, 18(7), 8168-8180; doi:10.3390/molecules18078168
Article

Preparation of a Sulfonated Carbonaceous Material from Lignosulfonate and Its Usefulness as an Esterification Catalyst

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Received: 3 May 2013; in revised form: 26 June 2013 / Accepted: 8 July 2013 / Published: 10 July 2013
(This article belongs to the Section Theoretical Chemistry)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Sulfonated carbonaceous material useful as a solid acid catalyst was prepared from lignosulfonate, a waste of the paper-making industry sulfite pulping process, and characterized by 13C-NMR, FT-IR, TGA, SEM and elemental analysis, etc. The sulfonic acid group density and total density of all acid groups in the sulfonated carbonaceous material was determined by titration to be 1.24 mmol/g and 5.90 mmol/g, respectively. Its catalytic activity in the esterification of cyclohexanecarboxylic acid with anhydrous ethanol was shown to be comparable to that of the ionic exchange resin Amberlyst-15, when they were used in the same amount. In the meantime, the sulfonic acid group was found to be leached out by 26%–29% after it was exposed to hot water (95 °C) for 5 h. The catalytic usefulness of the prepared carbonaceous material was investigated by performing esterifications.
Keywords: sulfonated carbonaceous material; lignosulfonate; solid acid catalyst
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MDPI and ACS Style

Lee, D. Preparation of a Sulfonated Carbonaceous Material from Lignosulfonate and Its Usefulness as an Esterification Catalyst. Molecules 2013, 18, 8168-8180.

AMA Style

Lee D. Preparation of a Sulfonated Carbonaceous Material from Lignosulfonate and Its Usefulness as an Esterification Catalyst. Molecules. 2013; 18(7):8168-8180.

Chicago/Turabian Style

Lee, Duckhee. 2013. "Preparation of a Sulfonated Carbonaceous Material from Lignosulfonate and Its Usefulness as an Esterification Catalyst." Molecules 18, no. 7: 8168-8180.

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