摘要
天然勃姆石热相变体(γ-Al_2O_3)对阴离子交换-吸附序列为:OH^-、S_^(2-)、PO_4^(3-)、F^-、Cr_2O_7^(2-)、NO_3^-、HCO_3^-,Cl^-,SO_4^(2-)。它表明γ-Al_2O_3对这些阴离子交换-吸附的相对能力。γ-Al_2O_3吸附或交换溶液中阴离子时,也对阳离子发生吸附或交换作用。溶液的pH值是影响阴离子交换-吸附作用的重要因素。γ-Al_2O_3对阴离子的交换-吸附及其可解脱性,具有潜在应用价值。
The selective sequence of anionic exchange-absorption of the γ-Al_2O_3 produced by thermal phase transformation of natural boehmite is. OH^-, S^(2-), PO_4^(3-), F^-, Cr_2O_7^(2-), NO_3^-, HCO_3^-, Cl^-, SO_4^(2-). It indicates a relative ability of exchange-absorption of γ-Al_2O_3 to the anions, when γ-Al_2O_3 exchanges or absorbs anions in solutions, it also exchanges or absorbs cations. The pH value of solutions is an important factor which affects anionic exchange absorption capacity. Some anions can be exchanged and absorbed by γ-Al_2O_3, and they also are eluted. This property of γ-Al_2O_3 is of potential use.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第4期303-310,共8页
Acta Petrologica Sinica
基金
国家自然科学基金