This work reports the synthesis of micro–meso hierarchical porous carbons prepared with sucrose as a carbon source. With properties characterised, dynamic adsorption performances of toluene on carbons were investigated at various initial concentrations. Results showed that adsorption capacities as high as 687.60 mg/g toluene/1 cm modified carbon can be achieved. Thus, large surface area, large volume of narrow microporosity and proper average pore size are the desired parameters to achieve strong toluene adsorption capacities. Moderate amounts of surface oxygen groups can also improve the adsorbents performance.

References

1. 1)
  - 23. Adib, F., Bagreev, A., Bandosz, TJ.: ‘Analysis of the relationship between H2S removal capacity and surface properties of unimpregnated activated carbons’, Environ. Sci. Technol., 2000, 34, (4), pp. 686–692 (doi: 10.1021/es990341g).
2. 2)
  - 30. Zhu, T, Ertekin, E: ‘Phonons, localization, and thermal conductivity of diamond nanothreads and amorphous graphene’, Nano Lett., 2016, 16, (8), pp. 4763–4772 (doi: 10.1021/acs.nanolett.6b00557).
3. 3)
  - 29. Mohana, N., Kannana, G.K., Upendraa, S., et al: ‘Breakthrough of toluene vapours in granular activated carbon filled packed bed reactor’, J. Hazard. Mater., 2009, 168, (2/3), pp. 777–781 (doi: 10.1016/j.jhazmat.2009.02.079).
4. 4)
  - 28. Ranganathan, R., Rokkam, S., Desai, T, et al: ‘Generation of amorphous carbon models using liquid quench method: a reactive molecular dynamics study’, Carbon, 2017, 113, pp. 87–99 (doi: 10.1016/j.carbon.2016.11.024).
5. 5)
  - 15. Mody, H.M., Kannan, S., Bajaj, H.C., et al: ‘A simple room temperature synthesis of MCM-41 with enhanced thermal and hydrothermal stability’, J. Porous Mater., 2008, 15, p. 571 (doi: 10.1007/s10934-007-9135-1).
6. 6)
  - 22. Li, L., Quinlivan, P.A, Knappe, D.R.U.: ‘Effects of activated carbon surface chemistry and pore structure on the adsorption of organic contaminants from aqueous solution’, Carbon, 2002, 40, pp. 2085–2100 (doi: 10.1016/S0008-6223(02)00069-6).
7. 7)
  - 18. Gregg, S.J., Sing, K.S.W.: ‘Adsorption, surface area and porosity’ (Academic Press, London, 1986).
8. 8)
  - 26. Zhu, T, Ertekin, E: ‘Generalized Debye-Peierls/Allen-Feldman model for the lattice thermal conductivity of low-dimensional and disordered materials’, Phys. Rev. B, 2016, 93, (15), pp. 1–13 (doi: 10.1103/PhysRevB.93.155414).
9. 9)
  - 25. Chen, PJ., Wu, S.: ‘Acid/base-treated carbons: characterization of functional groups and metal adsorption properties’, Langmuir, 2004, 20, pp. 233–242.
10. 10)
  - 3. Hort, C., Gracy, S., Platel, V., et al: ‘Evaluation of sewage sludge and yard waste compost as a biofilter media for the removal of ammonia and volatile organic sulfur compounds (VOSCs)’, Chem. Eng. J., 2009, 152, pp. 44–53 (doi: 10.1016/j.cej.2009.03.026).
11. 11)
  - 31. Fytianos, K., Voudrias, E., Kokkalis, E.: ‘Sorption–desorption behavior of 2, 4-dichloriphenol by marine sediments’, Chemosphere, 2000, 40, (6), pp. 3–6 (doi: 10.1016/S0045-6535(99)00214-3).
12. 12)
  - 2. Bouazza, N., Lillo-Ro denas, MA., Linares-Solano, A.: ‘Photocatalytic activity of TiO2-based materials for the oxidation of propene and benzene at low concentration in presence of humidity’, Appl. Catal. B: Environ., 2008, 84, pp. 691–698 (doi: 10.1016/j.apcatb.2008.06.002).
13. 13)
  - 14. Dolidovich, A.F., Akhremkova, G.S., Efremtsev, V.S.: ‘Novel technologies of VOC decontamination in fixed, moving and fluidized catalyst-adsorbent beds’, Can. J. Chem. Eng. Sci., 1999, 77, p. 342 (doi: 10.1002/cjce.5450770221).
14. 14)
  - 7. Serna-Guerrero, R., Sayari, A.: ‘Applications of pore-expanded mesoporous silica. Adsorption of volatile organic compounds’, Environ. Sci. Technol., 2007, 41, pp. 4761–4766 (doi: 10.1021/es0627996).
15. 15)
  - 24. Schepetkin, AI., Khlebnikov, IA., Ah, YS., et al: ‘Characterization and biological activities of humic substances from mumie’, J Agric. Food Chem., 2003, 51, pp. 5245–5254 (doi: 10.1021/jf021101e).
16. 16)
  - 9. Huang, C.-Y., Song, M., Gu, Z.-Y., et al: ‘Probing the adsorption characteristic of metal-organic framework MIL-101 for volatile organic compounds by quartz crystal microbalance’, Environ. Sci. Technol., 2011, 45, pp. 4490–4496 (doi: 10.1021/es200256q).
17. 17)
  - 19. Lo, A.-Y., Hung, C.-T., Yu, N., et al: ‘Syntheses of carbon porous materials with varied pore sizes and their performances as catalyst supports during methanol oxidation reaction’, Clean Energy Future Gener.., 2012, 100, pp. 66–74.
18. 18)
  - 1. Lillo-Rodenas, M.A., Cazorla-Amoros, D., Linares-Solano, A.: ‘Behaviour of activated carbons with different pore size distributions and surface oxygen groups for benzene and toluene adsorption at low concentrations’, Carbon, 2005, 43, pp. 1758–1767 (doi: 10.1016/j.carbon.2005.02.023).
19. 19)
  - 8. Lee, D.-G., Kim, J.-H., Lee, C.-H.: ‘Adsorption and thermal regeneration of acetone and toluene vapors in dealuminated Y-zeolite bed’, Sep. Purif. Technol., 2011, 77, pp. 312–324 (doi: 10.1016/j.seppur.2010.12.022).
20. 20)
  - 6. Wibowo, N., Setyadhi, L., Wibowo, D., et al: ‘Adsorption of benzene and toluene from aqueous solutions onto activated carbon and its acid and heat treated forms: influence of surface chemistry on adsorption’, J. Hazard. Mater., 2007, 146, (1–2), pp. 237–242 (doi: 10.1016/j.jhazmat.2006.12.011).
21. 21)
  - 16. Ryoo, R., Joo, S.H., Kim, J.M.: ‘Energetically favored formation of MCM-48 from cationic − neutral surfactant mixtures’, Phys. Chem. B, 1999, 103, (35), pp. 7435–7440 (doi: 10.1021/jp9911649).
22. 22)
  - 13. Yu, C., Qiu, J.S., Sun, Y.F., et al: ‘Adsorption removal of thiophene and dibenzothiophene from oils with activated carbon as adsorbent: effect of surface chemistry’, J. Porous Mater., 2008, 15, (2), pp. 151–157 (doi: 10.1007/s10934-007-9116-4).
23. 23)
  - 27. Song, Y., Qiao, WM., Yoon, S.-H., et al: ‘Toluene adsorption on various activated carbons with different pore structures’, New Carbon Mater.., 2005, 12, (20), pp. 294–298.
24. 24)
  - 21. Payer, K.R., Hammond, K.D, Tompsett, G.A., et al: ‘The effects of mechanical and thermal perturbations on states within the hysteresis of sorption isotherms of mesoporous materials’, J. Porous Mater., 2009, 16, (1), pp. 91–99 (doi: 10.1007/s10934-007-9172-9).
25. 25)
  - 4. Romero-Anaya, A.J., Lillo-Ródenas, M.A., Linares-Solano, A.: ‘Spherical activated carbons for low concentration toluene adsorption’, Carbon, 2010, 48, (9), pp. 2625–2633 (doi: 10.1016/j.carbon.2010.03.067).
26. 26)
  - 17. Chingombe, P., Saha, B., Wakeman, R.J.: ‘Surface modification and characterization of a coal-based activated carbon’, Carbon, 2005, 43, (43), pp. 3132–3143 (doi: 10.1016/j.carbon.2005.06.021).
27. 27)
  - 5. Fletcher, AJ., Yu zak, Y., Thomas, KM.: ‘Adsorption and desorption kinetics for hydrophilic and hydrophobic vapors on activated carbon’, Carbon, 2006, 44, pp. 989–1004 (doi: 10.1016/j.carbon.2005.10.020).
28. 28)
  - 10. Liu, Z.-H., Qiu, J.-R., Liu, H., et al: ‘Effects of SO2 and NO on removal of VOCs from simulated flue gas by using activated carbon fibers at low temperatures’, J. Fuel Chem. Technol., 2012, 40, pp. 93–99 (doi: 10.1016/S1872-5813(12)60008-5).
29. 29)
  - 11. Chen, XT., Quan, Y., Wang, Y., et al: ‘Treatment of uranium-containing process wastewater with high concentration nitrate by silica gel adsorption method’, Yuanzineng Kexue Jishu/Atomic Energy Sci. Technol., 2014, 48, (11), pp. 1928–1932.

Adsorption of toluene vapours on micro–meso hierarchical porous carbon

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