Issue 37, 2017, Issue in Progress

High-performance removal of methyl mercaptan by nitrogen-rich coconut shell activated carbon

Abstract

A series of nitrogen-doped coconut shell activated carbon catalysts were prepared by urea or melamine impregnation followed by heat treatment and used for the removal of methyl mercaptan (CH3SH). The physical and chemical properties of the nitrogen-doped coconut shell activated carbons were evaluated by nitrogen adsorption/desorption, scanning electron microscopy, X-ray photoelectron spectroscopy, elemental analysis, Boehm titration, and thermal analysis. The results show that CH3SH capacity depends on the nitrogen content. Further research indicates that pyridinic nitrogen and quaternary nitrogen are the active sites. Due to the metal-free property of the nitrogen-rich coconut shell activated carbon, the regeneration process can be easily performed and dimethyl disulfide (CH3SSCH3) can be recovered as the main product. Our study indicates that there is a promising prospect for nitrogen-rich coconut shell activated carbon for CH3SH removal because of its high capacity, mild conditions, and easy regeneration.

Graphical abstract: High-performance removal of methyl mercaptan by nitrogen-rich coconut shell activated carbon

Article information

Article type
Paper
Submitted
19 Mar 2017
Accepted
18 Apr 2017
First published
25 Apr 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 22892-22899

High-performance removal of methyl mercaptan by nitrogen-rich coconut shell activated carbon

Q. Liu, M. Ke, F. Liu, P. Yu, H. Hu and C. Li, RSC Adv., 2017, 7, 22892 DOI: 10.1039/C7RA03227G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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