Sulfur dioxide adsorption by activated carbons having different textural and chemical properties

Karatepe, Nilgün; Orbak, İlkün; Yavuz, Reha; Özyuğuran, Ayşe

doi:10.1016/j.fuel.2008.06.002

Cited by 116 publications

(73 citation statements)

References 26 publications

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“…Carbon materials have been widely used and studied for catalytic removal of SO 2 at low temperature (20-150 • C) [1][2][3][4][5][6]. The catalytic reaction involves adsorption and oxidation of SO 2 on carbon materials and hydration, forming sulfuric acid as the end product, in the presence of O 2 and H 2 O.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and oxidation of SO2 by graphene oxides: A van der Waals density functional theory study

Zhang

Cen

Liu

et al. 2015

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Adsorption and oxidation of SO2 by graphene oxides: A van der Waals density functional theory study

Zhang

Cen

Liu

et al. 2015

Applied Surface Science

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“…Activated carbons may reveal differences in pore structure and specific surface area, which are one of key factors influencing adsorption. For example, microporous carbons usually effectively adsorb contaminants of a small molecular size and mesoporous ones are efficient for adsorption of large molecules [2,3]. Besides porosity, presence of different oxygen-containing surface functional groups gives to the activated carbons specific features, like enhanced selectivity toward certain adsorbates.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, heating of both the dolomite and suitable carbon precursor was thought to be a suitable route to prepare porous carbon material supporting both MgO and CaO. Obtained composite materials were examined as regenerable sorbents for CO 2 . As we noticed, regeneration of the CO 2 -saturated sorbent materials was accompanied by certain changes in a mass of samples, even the process was carried out in an inert medium.…”

Section: Introductionmentioning

confidence: 99%

MgO/CaO-loaded porous carbons for carbon dioxide capture

Przepiórski

Czyżewski

Pietrzak

et al. 2012

J Therm Anal Calorim

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Nanoporous carbons loaded with both MgO and CaO were prepared by a simple heating of mixtures consisting of poly(ethylene terephthalate) and natural dolomite. Preparations were carried out at temperatures ranging from 850 to 1,000°C that ensured complete thermal decomposition of the dolomite contained in the mixtures to the oxides. An influence of the PET/dolomite weight ratio and temperature of the preparation process on the porosity of the obtained composite products and on CaO and MgO crystallite sizes are discussed using the results of nitrogen adsorption/desorption at 77 K and X-ray diffraction analyses, respectively. Performances of the hybrid materials as sorbents for carbon dioxide were examined using thermogravimetric analyses. Finally, possibility of regeneration of the spent sorbent materials together with a side-effect accompanying this process are discussed on the basis of thermogravimetric measurements. As found, a part of CO 2 captured by the hybrid sorbents gets adsorbed weakly and another portion is fixed strongly. During thermal regeneration, the strongly fixed CO 2 reacts with carbon material. In this way small fraction of a sorbent is lost.

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“…Since SO 2 is an acid gas, active sites responsible for adsorption should have a basic character. The basic sites have been related to surface oxygen [18]. The catalytic activity depends on oxygen-containing surface functional groups with Brønsted basicity properties [19].…”

Section: Xrd and Xps Studymentioning

confidence: 99%

Ni supported on activated carbon as catalyst for flue gas desulfurization

et al. 2010

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A series of Ni supported on activated carbon are prepared by excessive impregnation and the desulfurization activity is investigated. It has been shown that the activated carbon-supported Ni is an efficient solid catalyst for flue gas desulfurization. The activated carbon treated by HNO 3 exhibits high desulfurization activity, and different amounts of loaded-Ni on activated carbon significantly influence the desulfurization activity. The catalysts are studied by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results of XRD and XPS indicate that the activated carbon treated by HNO 3 can increase oxygen-containing functional groups. Ni on activated carbon after calcination at 800 °C shows major Ni phase and minor NiO phase, and with increasing Ni content on activated carbon, Ni phase increases and affects the desulfurization activity of the catalyst, which proves that Ni is the main active phase. activated carbon, Ni, desulfurization, XRD, XPS

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Sulfur dioxide adsorption by activated carbons having different textural and chemical properties

Cited by 116 publications

References 26 publications

Adsorption and oxidation of SO2 by graphene oxides: A van der Waals density functional theory study

Adsorption and oxidation of SO2 by graphene oxides: A van der Waals density functional theory study

MgO/CaO-loaded porous carbons for carbon dioxide capture

Ni supported on activated carbon as catalyst for flue gas desulfurization

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