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Evaluation of the efficiency of solvent extraction for template removal in the synthesis of MCM-41 type materials to be used as tobacco additives for smoke toxicity reduction

Paper ID Volume ID Publish Year Pages File Format Full-Text
42217 45915 2010 7 PDF Available
Title
Evaluation of the efficiency of solvent extraction for template removal in the synthesis of MCM-41 type materials to be used as tobacco additives for smoke toxicity reduction
Abstract

In this work different methods of elimination of the organic template remaining in a piece of as-synthesized Si-MCM-41 material have been studied: calcination, and two different extraction processes, with ethanol and with hydrogen peroxide. TGA has been applied in order to analyze and to compare the characteristics of the materials obtained by the three different treatments studied. The textural properties of the samples resulting after the extraction of the template, as well as the resulting hydrothermal stability of the materials, have been evaluated. Finally, the ability of the different samples as tobacco additives in order to reduce tobacco toxicity has been studied.The results show that TGA is an excellent tool for the evaluation of the efficiency of the different treatments applied. It can be concluded that the samples treated with a mixture of HCl/EtOH and with hydrogen peroxide, respectively, are able to be used as tobacco additives. Depending of the experimental conditions for the leaching process, the samples can have hydrothermal stability and activity similar to that of the conventional MCM-41, where the template has been removed by calcination.

Graphical abstractDifferent methods of elimination of the organic template remaining in an as-synthesized Si-MCM-41 material have been studied: calcination, and two different extraction processes, with ethanol and hydrogen peroxide. The textural properties of the samples resulting, as well as the resulting hydrothermal stability of the materials, have been evaluated. Finally, its ability as tobacco additives has been studied.Figure optionsDownload full-size imageDownload high-quality image (186 K)Download as PowerPoint slide

Keywords
MCM-41; Template elimination; Tensioactive; Extraction; Additive; Tobacco; Smoke
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Evaluation of the efficiency of solvent extraction for template removal in the synthesis of MCM-41 type materials to be used as tobacco additives for smoke toxicity reduction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 378, Issue 1, 15 April 2010, Pages 107–113
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