锂铝水滑石对水杨酸及其异构体的选择性插层研究(英文)

Competitive Intercalation of Geometric Isomers of Hydroxybenzoic Acid into [LiAl_2(OH)_6]Cl·yH_2O Layered Double Hydroxides

[LiAl_2(OH)_6]Cl·yH_2O was prepared by co-precipitation. The competitive intercalation of geometric isomers of hydroxybenzoic acid into the interlayer of layered double hydroxides (LDHs) was studied by the reaction of [LiAl_2(OH)_6]Cl·yH_2O with various mixtures of o-hydroxybenzoic acid, m-hydroxybenzoic acid and p-hydroxybenzoic acid. Powder X-ray diffraction (XRD) results confirmed the intercalation of the isomers, and high performance liquid chromatography (HPLC) was used for the quantitative study. The order of the preferential intercalation of the three isomers was found to be: o-hydroxybenzoic acid (1,2-C_7H_6O_3)》 p-hydroxybenzoic acid (1,4-C_7H_6O_3) > m-hydroxybenzoic acid (1,3-C_7H_6O_3).

[LiAlg（OH）6]Cl·yH2O was prepared by co-precipitation. The competitive intercalation of geometric isomers of hydroxybenzoic acid into the interlayer of layered double hydroxides （LDHs） was studied by the reaction of [LiAlg（OH）6]Cl·yH2O with various mixtures of o-hydroxybenzoic acid, m-hydroxybenzoic acid and p-hydroxybenzoic acid. Powder X-ray diffraction （XRD） results confirmed the intercalation of the isomers, and high performance liquid chromatography （HPLC） was used for the quantitative study. The order of the preferential intercalation of the three isomers was found to be： o-hydroxybenzoic acid （1,2-C7H6O3）〉〉 p-hydroxybenzoic acid （1,4-C7H6O3） 〉 m-hydroxybenzoic acid （1,3-C7H603）.