A study of cobaltous chloride dispersion on the surface of the silica gel
Küçük Resim Yok
Tarih
1999
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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.
Açıklama
Anahtar Kelimeler
electron super probe, surface analysis, silica gel, cobaltous chloride, dispersion
Kaynak
Applied Surface Science
WoS Q Değeri
Q2
Scopus Q Değeri
Cilt
147
Sayı
01.Apr
