Dynamic adsorption of volatile organic compounds on organofunctionalized SBA-15 materials

Hu, Qin; Li, Jinjun; Hao, Zhengping; Li, Landong; Qiao, Shi Zhang

doi:10.1016/j.cej.2008.11.003

Cited by 174 publications

(66 citation statements)

References 32 publications

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“…For example, activated carbon is one the most popular sorbent materials to extract chemical contaminants from wastewater. In recent years, organic/inorganic hybrid porous materials such as organic molecules-grafted mesoporous materials have attracted attention as effective adsorbents for removal of organic contaminants from water [5][6][7][8][9][10][11][12][13]. In addition, several reports describe that mesoporous silica materials (MCM-41) containing surfactant template also act as effective adsorbents for the removal of organic contaminants from aqueous solutions [14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Titania/C TAB Nanoskeleton as adsorbent and photocatalyst for removal of alkylphenols dissolved in water

Sakai

Loves

Okada

et al. 2013

Journal of Hazardous Materials

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We report here on the removal of alkylphenols (phenol, 4-n-propylphenol, 4-nheptylphenol and 4-nonylphenol) dissolved in water using the composite particles of nanocrystalline titania and alkyltrimethylammonium bromide (C n H 2n+1 N(CH 3 ) 3 Br, C n TAB; n = 12, 14, 16 and 18) (named as TiO 2 /C n TAB Nanoskeleton) as adsorbents and photocatalysts. In particular, the adsorption of alkylphenols onto TiO 2 /C n TAB Nanoskeleton in water was investigated in terms of hydrophobic interaction between alkylphenols and C n TAB, surface area, pore structure and crystal size of TiO 2 /C n TAB Nanoskeleton.We revealed that C n TAB incorporated in the TiO 2 /C n TAB Nanoskeleton promotes the adsorption of alkylphenols onto TiO 2 /C n TAB Nanoskeleton due to the hydrophobic interaction between alkylphenols and C n TAB.On the other hand, the surface area, pore structure and crystal size of TiO 2 /C n TAB Nanoskeleton did not affect the adsorption of alkylphenols onto TiO 2 /C n TAB Nanoskeleton. We also found that the alkylphenols dissolved in water were completely removed by the combination of adsorption and photocatalytic degradation by the TiO 2 /C n TAB Nanoskeleton under UV irradiation. These results prove that the TiO 2 /C n TAB Nanoskeleton acts as in tandem an adsorbent and a photocatalyst for removal of alkylphenols dissolved in water.

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Section: Introductionmentioning

confidence: 99%

Titania/C TAB Nanoskeleton as adsorbent and photocatalyst for removal of alkylphenols dissolved in water

Sakai

Loves

Okada

et al. 2013

Journal of Hazardous Materials

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“…25 The dynamic adsorption properties of benzene on the OMCs were measured on a fixed-bed system as described in our previous work. 26 The gas concentration of benzene was about 650 ppmv. Before adsorption, all of the carbon materials were degassed at 60°C for 10 h to remove the physically adsorbed water molecules and other impurities.…”

Section: Adsorption Measurementsmentioning

confidence: 99%

Study of the Influence of Pore Width on the Disposal of Benzene Employing Tunable OMCs

Wang

Zhang

Wang

et al. 2015

Ind. Eng. Chem. Res.

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By employing SBA-15 as a hard template and boric acid as a pore-expanding agent, we synthesized a series of tunable ordered mesoporous carbons (OMCs) with high specific surface areas and large pore volumes. The synthesized OMCs were used as adsorbents for benzene disposal to explore the influence of pore width on the adsorption of benzene. The XRD and nitrogen adsorption results revealed that the pore sizes of OMCs were contracted at certain values, within the range of 3.4−7.7 nm. The adsorption results for benzene on the OMCs showed that there was a gradual decrease in adsorption potential as the pore size of the adsorbent material increased. In addition, an evaluation of the dynamic adsorption of benzene per unit surface area indicated that the adsorption behaviors were strongly influenced by the pore width of the adsorbent material.

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“…The corresponding experimental set-up and method were described in our previous work. 22 Before starting each experiment, the ow rate of the carrier gas and the temperature of the saturator were adjusted so that the required outlet concentration of benzene vapor was reached and kept stable. Then, about 100 mg of sample was packed into the xed-bed column with an inner diameter of 6 mm and the temperature was maintained at 298 K. The samples were degassed at 110 C overnight to remove the physically adsorbed water molecules and other impurities, just as in the static adsorption procedure.…”

Section: Dynamic Adsorption Measurementsmentioning

confidence: 99%

Adsorption properties of benzene and water vapor on hyper-cross-linked polymers

et al. 2013

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A series of hyper-cross-linked polymers (HCPs) was synthesized via a post-cross-linking reaction using lowcross-linked polydivinylbenzene (PDVB) as precursor and 4,4 0 -bis(chloromethyl)biphenyl (BCMBP) as crosslinking reagent. The effects of various amounts of BCMBP on the structures of the hyper-cross-linked polymers were discussed. The resultant typical HCP-1.3 possesses hierarchical micro/meso pore structures and a high stability up to 400 C. The increased specific surface area and total pore volume of HCP-1.3, which reach 1231 m 2 g À1 and 1.99 cm 3 g À1 , respectively, imply the high cross-linking ability of BCMBP.In order to study the adsorption properties of HCP-1.3, benzene and water were selected as typical adsorbates for their non-polar and polar characteristics. The static adsorption amount of benzene on HCP-1.3 is 30.0 mmol g À1, which is two times higher than the corresponding adsorbed water amount, suggesting a potential hydrophobic property of HCP-1.3. Dynamic adsorption was performed with a fixed-bed column to simulate the real situation under dry and 30% relative humidity conditions. The results show the dynamic adsorption amount under the 30% relative humidity condition is as high as 90% of the value under dry conditions, implying HCP-1.3 would be a promising adsorbent for VOC adsorption under both dry and humid conditions.

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Dynamic adsorption of volatile organic compounds on organofunctionalized SBA-15 materials

Cited by 174 publications

References 32 publications

Titania/C TAB Nanoskeleton as adsorbent and photocatalyst for removal of alkylphenols dissolved in water

Titania/C TAB Nanoskeleton as adsorbent and photocatalyst for removal of alkylphenols dissolved in water

Study of the Influence of Pore Width on the Disposal of Benzene Employing Tunable OMCs

Adsorption properties of benzene and water vapor on hyper-cross-linked polymers

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