SO2 adsorption and transformation on calcined NiAl hydrotalcite-like compounds surfaces: An in situ FTIR and DFT study

Zhao, Ling; Li, Xinyong; Hao, Ce; Raston, Colin L.

doi:10.1016/j.apcatb.2012.01.034

Cited by 81 publications

(42 citation statements)

References 53 publications

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“…7 shows the DRIFT spectra of the 3V/Ti catalyst under a stream of a 1% SO 2 and 5% O 2 gas mixture at 50°C at different times . 31,39 Fig . Meanwhile, the intensity of the bands at 1030, 2042, 3620, and 3668 cm −1 decreased with time.…”

Section: H 2 -Tpr Analysis Of the Samplesmentioning

confidence: 99%

Relationship between the molecular structure of V₂O₅/TiO₂ catalysts and the reactivity of SO₂ oxidation

Gao

et al. 2016

Catal. Sci. Technol.

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The relationship between the molecular structure of V 2 O 5 /TiO 2 catalysts and the reactivity of SO 2 oxidation was investigated. The dispersion state and surface properties of supported vanadia over V 2 O 5 /TiO 2 catalysts were studied with various experimental techniques. Isolated vanadia species were dispersed on the TiO 2 surface as Ti-O-V bonds at VO x coverage far below the monolayer. Polymeric vanadia species were then formed through the V-O-V bonds as the VO x coverage increased. SO 2 temperatureprogrammed desorption and in situ diffuse reflectance infrared Fourier transform spectroscopy were conducted to study the interaction between SO 2 and V 2 O 5 /TiO 2 . On the V 2 O 5 /TiO 2 catalysts, the turnover frequency of SO 2 oxidation was almost constant with increased VO x coverage under the condition of constant temperature. VO was demonstrated to play a critical role in the SO 2 adsorption and oxidation. A possible reaction mechanism was established in this study.Catal. Sci. Technol. This journal is

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Section: H 2 -Tpr Analysis Of the Samplesmentioning

confidence: 99%

Relationship between the molecular structure of V₂O₅/TiO₂ catalysts and the reactivity of SO₂ oxidation

Gao

et al. 2016

Catal. Sci. Technol.

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“…The band at 3440 cm −1 , due to the adsorbed H 2 O, is present in the exhausted sorbents. The bands at 1650 and 1410 cm −1 are ascribed to the symmetric and asymmetric stretching vibrations of the O–C–O units of HCO 3 − group formed by the reaction of basic hydroxyl groups on the sorbent and CO 2 in air, respectively . By comparing the intensity of the HCO 3 − group in the sorbents, we can find that the corresponding bands in the base‐treated sorbent are stronger than that of the other two sorbents, which indicated that base treatment leads to great number of basic hydroxyl groups present on the sorbent.…”

Section: Resultsmentioning

confidence: 94%

Effect of Surface Properties of Iron Oxide Sorbents on Hydrogen Sulfide Removal from Odor

Zeng

Liu

Gong

et al. 2015

CLEAN Soil Air Water

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Hydrogen sulfide (H2S) removal is the key issue for the odor control of sewage treatment facilities. In this paper, the iron oxide sorbents with different surface acid–base properties were prepared by acid and base modification. Effect of surface properties of iron oxide sorbents on H2S removal was revealed by the characterization of surface pH, Fourier‐transform infrared spectroscopy, X‐ray photoelectron spectroscopy, and solid‐state NMR spectroscopy. The results show that the activity loss of the iron oxide sorbent is mainly due to the gradual oxidation of H2S into elemental sulfur and further into the sulfuric acid and sulfurous acid with time on stream. Meanwhile, the surface basic environment of base‐treated iron oxide sorbent significantly increases the H2S removal activity by suppression the formation of H2SO4 or H2SO3 during the desulfurization process. Our findings will help us to prepare novel sorbent for more effective H2S removal from, e.g., odor gas.

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“…Based on the computer simulations they are lots of studies in the literatures toward SO x sensing [26][27][28][29][30][31][32][33][34][35][36]. For example, Tian et al have studied on the theoretical calculations for interaction of SO 2 on the Pd-doped SWCNTs [37].…”

Section: Introductionmentioning

confidence: 97%

Interaction of SO2 and SO3 on terthiophene (as a model of polythiophene gas sensor): DFT calculations

Rad

Valipour

Gholizade

et al. 2015

Chemical Physics Letters

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SO2 adsorption and transformation on calcined NiAl hydrotalcite-like compounds surfaces: An in situ FTIR and DFT study

Cited by 81 publications

References 53 publications

Relationship between the molecular structure of V₂O₅/TiO₂ catalysts and the reactivity of SO₂ oxidation

Relationship between the molecular structure of V₂O₅/TiO₂ catalysts and the reactivity of SO₂ oxidation

Effect of Surface Properties of Iron Oxide Sorbents on Hydrogen Sulfide Removal from Odor

Interaction of SO2 and SO3 on terthiophene (as a model of polythiophene gas sensor): DFT calculations

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SO2 adsorption and transformation on calcined NiAl hydrotalcite-like compounds surfaces: An in situ FTIR and DFT study

Cited by 81 publications

References 53 publications

Relationship between the molecular structure of V2O5/TiO2 catalysts and the reactivity of SO2 oxidation

Relationship between the molecular structure of V2O5/TiO2 catalysts and the reactivity of SO2 oxidation

Effect of Surface Properties of Iron Oxide Sorbents on Hydrogen Sulfide Removal from Odor

Interaction of SO2 and SO3 on terthiophene (as a model of polythiophene gas sensor): DFT calculations

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Relationship between the molecular structure of V₂O₅/TiO₂ catalysts and the reactivity of SO₂ oxidation

Relationship between the molecular structure of V₂O₅/TiO₂ catalysts and the reactivity of SO₂ oxidation