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Updated: Aug 23, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Extraction of heavy metals by 2-mercaptoethoxy groups attached to silica gel
1Department of Chemistry, Institute for Environmental Studies, University of South Florida, Tampa, Florida 33620, USA.
Abstract:
Silica gel is currently being used as a support for various straight chain mono- and bifunctional compounds such as amines, thiols (mercaptans), and mercaptoalochols. The current study reports the results of an investigation of a 2-mercaptoethoxy moiety covalently attached to silica gel. The condensation was effected by acid-catalyzed condensation of toluene solution of 2-mercaptoethanol and silica gel and azeotropically removing the water using a Dean-Stark tube. As a coordinating agent, this bifunctional compound was used in the removal of copper(II), cadmium(II), and lead(II) from standard aqueous solutions. Using silica gel support, the removal percentages were 91-93% for the three metals.
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