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Methyl mercaptan and carbonyl sulfide traces removal through adsorption and catalysis on zeolites and layered double hydroxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
41724 45897 2011 7 PDF Available
Title
Methyl mercaptan and carbonyl sulfide traces removal through adsorption and catalysis on zeolites and layered double hydroxides
Abstract

In this paper, the adsorption of methyl mercaptan and carbonyl sulfide by metal exchanged zeolites and layered double hydroxides (LDH) is studied. The affinity of CH3SH for metal-exchanged zeolites was found to increase with the basicity and the valence of the cation. Yoon–Nelson modelling gave good predictions of half time of breakthrough for each zeolite tested. Thermogravimetry was used in the case of the system CH3SH/NaX for elucidating the desorption process of CH3SH from NaX. In contrast, the affinity of COS was found clearly lower for Me-zeolite in comparison with CH3SH. Catalytic hydrolysis of COS was tested with the same metal exchanged zeolites and LDH materials and the basicity of the catalysts was found to strongly influence the hydrolysis.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (97 K)Download as PowerPoint slideHighlights► Zeolites and LDH used as sorbents for methyl mercaptan and carbonyl sulfide. ► Affinity of COS is lower for Me-zeolite in comparison with CH3SH. ► Basicity of catalysts rules the catalytic hydrolysis of COS.

Keywords
Methyl mercaptan; Carbonyl sulfide; Zeolites; Layered double Hydroxides; Adsorption; Hydrolysis
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Methyl mercaptan and carbonyl sulfide traces removal through adsorption and catalysis on zeolites and layered double hydroxides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 397, Issues 1–2, 30 April 2011, Pages 218–224
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us