Adsorption of ammonia using mesoporous alumina prepared by a templating method

  • Yeom, Changjoo (Department of Chemical Engineering, Kwangwoon University) ;
  • Kim, Younghun (Department of Chemical Engineering, Kwangwoon University)
  • Received : 2017.04.10
  • Accepted : 2017.06.06
  • Published : 2017.12.31


Ammonia, $NH_3$, is a key chemical widely used in chemical industries and a toxic pollutant that impacts human health. Thus, there is a need for the development of effective adsorbents with high uptake capacities to adsorb $NH_3$. An adsorbent with a high surface area and a small pore size is generally preferred in order to have a high capacity for the removal of $NH_3$. The use inorganic nanoporous materials as gas adsorbents has increased substantially and emerged as an alternative to zeolite and activated carbon. Herein, mesoporous alumina (MA) was prepared and used as an $NH_3$ adsorbent. MA showed good pore properties such as a uniform pore size and interlinked pore system, when compared to commercial adsorbents (activated carbon, zeolite, and silica powder). MA has free hydroxyl groups, serving as useful adsorption sites for $NH_3$. In an adsorption isotherm test, MA exhibited 4.7-6.5 times higher uptake capacities for $NH_3$ than commercial adsorbents. Although the larger surface areas of adsorbents are important features of ideal adsorbents, a regular and interlinked adsorbent pore system was found to be a more crucial factor to adsorb $NH_3$.


Adsorbents;Ammonia;Mesoporous alumina;Nanopore;Toxic gases


Supported by : Korea Environmental Industry and Technology Institute, National Research Foundation of Korea


  1. Peri JB. Infrared study of OH and $NH_3$ groups on the surface of a dry silica aerogel. J. Phys. Chem. 1966;70:2937-2945.
  2. Blomfield GA, Little LH. Chemisorption of ammonia on silica. Can. J. Chem. 1973;51:1771-1781.
  3. Kim Y, Lee B, Yi J. Effect of framework or textural nanoporosity on the bulk morphology of mesoporous aluminas. Korean J. Chem. Eng. 2007;24:679-682.
  4. Griffiths DWL, Hallam HE, Thomas WJ. Infrared study of adsorption and oxidation of ammonia on silica-supported platinum and silica. Trans. Faraday Soc. 1968;64:3361-3369.
  5. Barpaga D, LeVan MD. Functionalization of carbon silica composites with active metal sites for $NH_3$ and $SO_2$ adsorption. Microporous Mesoporous Mater. 2016;221:197-203.
  6. Wang Y, Bryan C, Xu H, Pohl P, Yang Y, Brinker CJ. Interface chemistry of nanostructured materials: Ion adsorption on mesoporous alumina. J. Colloid Interface Sci. 2002;254:23-30.
  7. Chen Y, Li L, Li J, Ouyang K, Yang J. Ammonia capture and flexible transformation of M-2(INA) (M=Cu, Co, Ni, Cd) series materials. J. Hazard. Mater. 2016;306:340-347.
  8. Behera SN, Sharma M. Transformation of atmospheric ammonia and acid gases into components of $PM_{2.5}$: An environmental chamber study. Environ. Sci. Pollut. Res. Int. 2012;19:1187-1197.
  9. Furtado AMB, Liu J, Wang Y, LeVan MD. Mesoporous silica-metal organic composite: Synthesis, characterization, and ammonia adsorption. J. Mater. Chem. 2011;21:6698-6706.
  10. Johnson BJ, Melde BJ, Peterson GW, Schindler BJ, Jones P. Functionalized organosilicate materials for irritant gas removal. Chem. Eng. Sci. 2012;68:376-382.
  11. Helminen J, Helenius J, Paatero E, Turunen I. Adsorption equilibria of ammonia gas on inorganic and organic sorbents at 298.15 K. J. Chem. Eng. Data 2001;46:391-399.
  12. Ruckart KN, Zhang Y, Reichert WM, Peterson GW, Glover TG. Sorption of ammonia in mesoporous-silica ionic liquid composites. Ind. Eng. Chem. Res. 2016;55:12191-12204.
  13. Chiang WS, Fratini E, Baglioni P, Chen JH, Liu Y. Pore size effect on methane adsorption in mesoporous silica materials studied by small-angle neutron scattering. Langmuir 2016;6:8849-8857.
  14. Barea E, Montoro C, Navarro JAR. Toxic gas removal: Metal-organic frameworks for the capture and degradation of toxic gases and vapours. Chem. Soc. Rev. 2014;43:5419-5430.
  15. Hung CM. Decomposition kinetics of ammonia in the gaseous stream by a nanoscale copper-cerium bimetallic catalyst. J. Hazard. Mater. 2008;150:53-61.
  16. Hanif A, Dasgupta S, Nanoti A. High temperature $CO_2$ adsorption by mesoporous silica supported magnesium aluminum mixed oxide. Chem. Eng. J. 2015;15:703-710.
  17. Belmabkhout Y, Weireld GD, Sayari A. Amine-bearing mesoporous silica for $CO_2$ and $H_2S$ removal from natural gas and biogas. Langmuir 2009;25:13275-13278.
  18. Zamani C, Illa X, Abdollahzadeh-Ghom S, Morante JR, Rodriguez AR. Mesoporous silica: A suitable adsorbent for amines. Nanoscale Res. Lett. 2009;4:1303-1308.
  19. Hung CT, Bai H. Adsorption behaviors of organic vapors using mesoporous silica particles made by evaporation induced self-assembly method. Chem. Eng. Sci. 2008;63:1997-2005.
  20. Thote JA, Chatti RV, Iyer KS, et al. N-doped mesoporous alumina for adsorption of carbon dioxide. J. Environ. Sci. 2012;24:1979-1984.
  21. Chen C, Ahn WS. $CO_2$ capture using mesoporous alumina prepared by a sol-gel process. Chem. Eng. J. 2011;1666:646-651.
  22. Kim Y, Kim C, Choi I, Rengaraj S, Yi J. Arsenic removal using mesoprous alumina prepared via a templaing method. Environ. Sci. Technol. 2004;38:924-931.
  23. Rengaraj S, Yeon JW, Kim Y, Kim WH. Application of Mg-mesoporous alumina prepared by using magnesium strearate as a template for the removal of nickel: Kinetics, isohterm, and error analysis. Ind. Eng. Chem. Res. 2007;46:2834-2842.