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Adsorption
Erschienen in: Adsorption 8/2016

22.10.2016

Effect of steam and CO2 activation on characteristics and desulfurization performance of pyrolusite modified activated carbon

verfasst von: Lin Yang, Tian Huang, Xia Jiang, Wenju Jiang

Erschienen in: Adsorption | Ausgabe 8/2016

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Abstract

We investigated the effect of activation methods, i.e. steam and carbon dioxide (CO2) activation, on the physicochemical properties and desulfurization performance of pyrolusite-modified activated carbon. Walnut shell was used as the raw material and three kinds of pyrolusite were used as the additives for the modification of activated carbon. Physicochemical properties of the samples were studied by BET, XPS, FTIR and XRD methods. The results showed that the samples by steam activation (AC-H2O) had higher SBET, pore volume and surface oxygen-containing functional groups than those by CO2 activation (AC-CO2). Different kinds of pyrolusite had influence on the pore structures and the contents of C–O/C=O groups on the AC-H2O samples, due to different contents of Mn/Fe in these pyrolusite. All pyrolusite modified samples demonstrated a higher desulfurization activity than blank ones, and the sulfur capacity of the modified samples increased with the increment of Mn/Fe contents in the pyrolusite. Furthermore, the AC-H2O modified samples performed much higher desulfurization capacity (217 mg/g) than the AC-CO2 samples (171 mg/g).
Vorheriger Artikel Phosphorus removal from wastewater using a lanthanum oxide-loaded ceramic adsorbent
Nächster Artikel Study of molybdenum–nickel alumina based catal-sorbents to simultaneously remove of H2S and NH3 from hot coal gas

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Metadaten
Titel
Effect of steam and CO2 activation on characteristics and desulfurization performance of pyrolusite modified activated carbon
verfasst von
Lin Yang
Tian Huang
Xia Jiang
Wenju Jiang
Publikationsdatum
22.10.2016
Verlag
Springer US
Erschienen in
Adsorption / Ausgabe 8/2016
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI
https://doi.org/10.1007/s10450-016-9832-7

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