A study of cobaltous chloride dispersion on the surface of the silica gel

被引：15

作者：

Balköse, D ^{[1
]}

Köktürk, U

Yilmaz, H

机构：

[1] Ege Univ, Fac Engn, Dept Chem Engn, TR-35100 Izmir, Turkey

[2] 9 September Univ, Fac Engn, Dept Min Engn, TR-35100 Izmir, Turkey

来源：

APPLIED SURFACE SCIENCE | 1999年 / 147卷 / 1-4期

关键词：

electron super probe; surface analysis; silica gel; cobaltous chloride; dispersion;

D O I：

10.1016/S0169-4332(99)00088-4

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：

Cobalt (II) salts dispersed on different substrates have functions as humidity indicating desiccants and catalysts. CoCl2, containing silica gel granules of 3 mm size for packed column applications were prepared by impregnation of the aqueous solution of the salt to silica hydro gel at pH near 2, drying and ageing methods. X-ray diffraction and electron microprobe studies indicated cobalt element was both dispersed in particulate form and as sub-monolayer. IR spectra indicated presence of Si-OH groups in all of the silica gels. CoCl2, containing silica gels changed colour from blue to pink upon moisture adsorption due to presence of the CoCl2, Co2SiO4 and Na2CoSiO4. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：77 / 84

页数：8

共 18 条

[1]

ACKERMAN MN, 1970, CHEM ED, V47, P89

[2] Dynamics of water vapor adsorption on humidity-indicating silica gel [J].

Balkose, D ;

Ulutan, S ;

Ozkan, FCIA ;

Celebi, S ;

Ulku, S .

APPLIED SURFACE SCIENCE, 1998, 134 (1-4) :39-46

[3] DIFFUSION OF PROTONS IN SILICA HYDROGEL [J].

BALTACIOGLU, H ;

BALKOSE, D .

COLLOID AND POLYMER SCIENCE, 1989, 267 (05) :460-464

[4] EVIDENCE FOR THE NEOFORMATION OF CLAYS UPON SORPTION OF CO(II) AND NI(II) ON SILICATES [J].

CHARLET, L ;

MANCEAU, A .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1994, 58 (11) :2577-2582

[5]

CHEMEL A, 1990, J NONCRYST SOLIDS, V122, P285

[6]

DOBYCHINE DF, 1986, ZH PRIKL KHIM, V59, P2434

[7]

FERGUSON I, 1975, INORG CHEM, V14, P190

[8] ELECTRONIC ABSORPTION-SPECTRA OF TETRAGONAL AND PSEUDOTETRAGONAL COBALT(II) .2. COCL2.6H2O AND COCL2.6D2O [J].

FERGUSON, J ;

WOOD, TE .

INORGANIC CHEMISTRY, 1975, 14 (01) :184-189

[9]

GUNER FS, 1993, P 9 CHEM CHEM ENG S

[10]

HATAWAY BJ, 1969, J CHEM SOC INORG PHY, P1183

← 1 2 →