摘要
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/A1, 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 Br6nsted acid sites and acted as the main active centers for capturing ammonia.
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/A1, 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 Br6nsted acid sites and acted as the main active centers for capturing ammonia.
基金
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）.
