Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (3): 480-484.doi: 10.1007/s40242-018-7281-4

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Removal of Low-concentration Ammonia from Ambient Air by Aluminophosphates

LI Chunyang, WU Shujie, YU Guiyang, YANG Xuwei, LIU Gang, ZHANG Wenxiang   

  1. Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun 130021, P. R. China
  • Received:2017-08-28 Revised:2017-11-22 Online:2018-06-01 Published:2017-12-11
  • Contact: ZHANG Wenxiang E-mail:zhwenx@jlu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21473074) and the Open Project of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, China(No.2017-03).

Abstract: A series of aluminumphosphate materials was prepared and used as adsorbents for the removal of ammonia at low concentrations. The influence of various preparation parameters, including the pH value of sol, calcination temperature and molar ratio of P/Al, on the structure and surface properties as well as adsorption capacity was investigated. The results showed that large amount of P-OH present on the surface of aluminophosphates was suitable for the removal of ammonia. They were the major source of weak Brönsted acid sites and acted as the main active centers for capturing ammonia.

Key words: Ammonia adsorption, Aluminophosphate, Air purification, Weak acid, Porous material