三聚磷酸二氢铝对氨气的吸附动力学研究

在真空干燥器中,加入一定量待测气体的水溶液,保持真空干燥器中待测气体浓度恒定。利用此装置研究了氨气浓度、三聚磷酸二氢铝吸附大气和水蒸气后,对三聚磷酸二氢铝吸附氨气动力学的影响。结果表明,三聚磷酸二氢铝吸附氨气,可用一级动力学方程和Elovich动力学方程模型描述;氨水浓度对吸附量和平衡吸附时间有显著影响;三聚磷酸二氢铝吸附空气后,对吸附量和平衡吸附时间无影响;三聚磷酸二氢铝吸附水蒸气后,对吸附量和平衡吸附时间均有影响。

Adsorption Kinetics of Ammonia on Aluminum Dihydrogen Tripolyphosphate

The aqueous solution of gas with a certain mass to be determined is put in vacuum dryer and the gas concentration is kept constant in vacuum dryer. Then the effects of ammonia concentration and adsorption of air and water vapor on aluminum dihydrogen tripolyphosphate on adsorption kinetics of ammonia on aluminum dihydrogen tripolyphosphate are studied by utilizing this device. The results show that the adsorption kinetics of ammonia on aluminum dihydrogen tripolyphosphate can be described by first-order kinetic equation and Elovich kinetic equation model. The ammonia concentration has a great effect on the adsorption capacity and equilibrium adsorption time, and there are no effects of adsorption air on aluminum dihydrogen tripolyphosphate air on the adsorption capacity and equilibrium adsorption time. However, adsorption of water vapor on aluminum dihydrogen tripolyphosphate has influences on the adsorption capacity and equilibrium adsorption time.