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Adsorptive removal of tert-butylmercaptan and tetrahydrothiophene using microporous molecular sieve ETS-10

Paper ID Volume ID Publish Year Pages File Format Full-Text
47168 46462 2010 7 PDF Available
Title
Adsorptive removal of tert-butylmercaptan and tetrahydrothiophene using microporous molecular sieve ETS-10
Abstract

The adsorptive removal of tert-butylmercaptan (TBM) and tetrahydrothiophene (THT) in methane gas using microporous molecular sieve ETS-10 was investigated at an ambient temperature and atmospheric pressure. Na,K-ETS-10 and Cu-exchanged Na,K-ETS-10 (Cu-ETS-10) were characterized by X-ray diffractometer (XRD) for the crystalline phase, X-ray fluorescence (XRF) analyzer for the chemical composition, and nitrogen adsorption-isotherm measurement for the BET surface area and porosity, respectively. Posterior to its treatment at 723 K in He atmosphere for 2 h, the Cu(II) in Cu-ETS-10 could be partially autoreduced to Cu(I), which was confirmed by X-ray photoelectron spectroscopy (XPS). The preferential adsorption of THT over TBM on Na,K-ETS-10 and the concurrent adsorption of TBM and THT on Cu-ETS-10 were achieved, which could be explained by the uptake curve in the binary component adsorption, the temperature-programmed desorption, and the apparent activation energy for desorption. The breakthrough sulfur adsorption capacity for both TBM and THT was attained to 2.50 mmol S/g on Cu-ETS-10-0.1(4). This markedly high breakthrough sulfur adsorption capacity on Cu-ETS-10 is unprecedented in removing organic sulfur compounds from fuel gas by adsorption on zeolites.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ High adsorption selectivity for THT over TBM on Na,K-ETS-10 is achieved. ▶ Introduction of Cu in Na,K-ETS-10 leads to concurrent adsorption of THT and TBM. ▶ Breakthrough adsorption capacity for THT and TBM on Cu-ETS-10(4) is 2.50 mmol S/g.

Keywords
Adsorption; Desulfurization; Cu-exchanged ETS-10; Zeolite
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Adsorptive removal of tert-butylmercaptan and tetrahydrothiophene using microporous molecular sieve ETS-10
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 100, Issues 1–2, 11 October 2010, Pages 264–270
Authors
, , , , , ,
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
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