ADSORPTION CHARACTERISTICS OF SILICA-CONTAINING MIXED-OXIDE GELS FOR AMINO-ACIDS IN AQUEOUS-SOLUTIONS

被引：14

作者：

KANEKO, S ^{[1
]}

MIKAWA, M ^{[1
]}

YAMAGIWA, S ^{[1
]}

机构：

[1] KYOWA CHEM IND CO LTD,CHUO KU,TOKYO 103,JAPAN

来源：

COLLOIDS AND SURFACES | 1990年 / 46卷 / 2-4期

关键词：

D O I：

10.1016/0166-6622(90)80166-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption abilities of silica-containing mixed-oxide gels for amino acids in aqueous solutions have been investigated by means of batch adsorption tests. The following three combinations showed the best results: (1) silica-alumina of molar ratio 1:3 for l-glutamic acid; (2) silica-magnesia of molar ratio 1:1 for glycine; (3) silica-titania of molar ratio 3: 1 for l-lysine. The interaction between the mixed-oxide surface and the amino acid is discussed. The pH of the amino acid solution affected the extent of adsorption in all cases. The surface charge and the cation located on the gel largely determined the adsorption of amino acid except for the neutral amino acid (glycine). Further, the pore-size distribution of the gel was generally changed by the adsorption of the amino acid. © 1990.

引用

页码：203 / 212

页数：10

共 14 条

[1]

[Anonymous], ADSORPTION SURFACE A

[2] ADSORPTION OF AMINO-ACIDS ON IRON(III) HYDROXIDE [J].