Adsorption of amino-acids and peptides by montmorillonite and illite. Part 2.—Physical adsorption

Greenland, D. J.; Laby, R. H.; Quirk, J. P.

doi:10.1039/tf9656102024

Cited by 75 publications

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“…Greenland et al (1962,1965) investigated the interactions of various amino acids with H-, Na-, and Ca-montmorillonites [19,20]. Arginine, histidine, and lysine adsorbed to Na-and Ca-montmorillonites by cation exchange.…”

Section: Adsorption Of Amino Acids By Clay Mineralsmentioning

confidence: 99%

Role of Clay Minerals in Chemical Evolution and the Origins of Life

Hashizume¹

2012

Clay Minerals in Nature - Their Characterization, Modification and Application

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Section: Adsorption Of Amino Acids By Clay Mineralsmentioning

confidence: 99%

Role of Clay Minerals in Chemical Evolution and the Origins of Life

Hashizume¹

2012

Clay Minerals in Nature - Their Characterization, Modification and Application

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“…In addition, the solubility of tetra-gly is much smaller than mono-and other oligo-glys. However, the slope of the isotherm for adsorption of tetra-gly was not so steep, as compared with those of mono-, di-, tri-and tetra-gly by Ca2+-montmorillonite by Greenland (1965). [7] For that, the adsorption of tetra-gly might be affected by the mesopore for FSM-16.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Mono-, Di-, Tri- and Tetra-Glycine by Mesoporous Materials FSM-16

Hashizume

2003

Journal of Ion Exchange

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Adsorption of mono, di-, tri-and tetra-gly by FSM-16 was attempted and isotherms for adsorption of them was drawn.The isotherms for adsorption were arranged from high to low that of tetra-, tri-, di-and mono-gly in order.The arrangement of the isotherms was dependent on the solubility of glycine and its oligomers. On the other hand, FSM-16 can function as the molecular sieve because FSM-16 has a mesopore.The effect of the molecular sieve showed very little in extend of the adsorption. IntroductionA mesoporous material, FSM-16 was synthesized by Yanagisawa et al. (1990) for the first time.[1] When a surfactant was intercalated into an interlayer of kanemite, the surfactant formed micelles between the interlayers. The shape of the micelle for the surfactant remained by the polymerization of silicate. FSM-16 was obtained by the removal of the surfactant from the interlayers. The characteristics of FSM-16 were investigated sufficiently. [1][2][3][4][5] For example, the pore size of FSM-16 is about 3 nm, the surface area is about 1000 m2/g, adsorption of water vapor by FSM-16 has been investigated, and the structure of FSM46 seldom collapsed by water, etc. The mesoporous material was expected to utilize a molecular sieve or a catalyst. Recently, the mesoporous material also began to be used as a space for the creation of a nanomaterial.The possibility of a molecular sieve occurring by the length of a molecule was investigated in this report. The organic compounds used were glycine (mono-gly), glycyl-glycine (di-gly), glycyl-glycyl-glycine (tri-gly) and glycyl-glycyl-glycyhglycine (tetra-gly). They do not have the functional group in the side chain and have one amino and one carboxyl group in both ends, respectively (Fig.1, (a)). Therefore, glycine and its oligomers are fit for the investigation of the effect of the molecular sieve for FSM-16. We attempted to make adsorption of mono-, di-, tri-, tetra-glycine by FSM-16. The isotherms for the adsorption of them were drawn up and the difference of them and the possibility of a molecular sieve of FSM-16 were discussed. Vol.14 Supplement (2003) The lengths of mono-gly and tetra-gly molecules are about 0.4 and 1.4 nm, respectively. Therefore, the lengths of the molecules of oligo-glycmes used are small enough for FSM-16. It is supposed that the adsorption of polymer will get smaller than that expected if the effect of the molecular sieve appears on the adsorption.That is to say that the polymer can adsorb only on the outer surface of the FSM-16 particle without the adsorption on the inside of the mesopore for FSM-16.However, the isotherm for adsorption of tetra-gly was higher than any other isotherms of adsorption as shown in Fig. 2. Therefore, the effect of molecular sieve for the pore size of FSM-16 might not appear clearly in this work.The arrangement of the isotherms for adsorption in Fig. 2 affects the solubility of glycine and its oligomers.As shown in Table 1, the solubility of tetra-gly is the smallest and that of mono-gly is the largest. The smaller the s...

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“…More recently, Lee et al (1989), Smith et al (1990), and Jaynes and Boyd ( 199 l) attributed this mechanism to the enhanced sorption of neutral organic molecules on soils and clays exchanged with organic cations with one or more long alkyl groups. Because clay minerals saturated with metal cations contain negligible amounts of organic matter, the sorption of neutral organic molecules on these clays only involves the partition mechanism proposed by the earlier investigators (Greenland et al, 1962(Greenland et al, , 1965Theng, 1972;Theng and Scharpenseel, 1976).…”

mentioning

confidence: 99%

“…It should be noted that two types of partition mechanisms have been proposed. Earlier, Greenland et al (1962Greenland et al ( , 1965, Theng (1972), and Theng and Scharpenseel (1976) proposed that the linear sorption isotherm observed with clay minerals can be characterized by a partition of a solute between the bulk and intercrystalline water. Later, Chiou et al (1979Chiou et al ( , 1983 proposed that the sorption of neutral organic chemicals is essentially a partition process between the soil organic matter and soil water.…”

mentioning

confidence: 99%