TY - JOUR
T1 - Synthesis and characterization of nickel-copper hydroxide acetate, NiCu(OH)3.1(OCOCH3)0.9 • 0.9H2O
AU - Kozai, Naofumi
AU - Mitamura, Hisayoshi
AU - Fukuyama, Hiroyasu
AU - Esaka, Fumitaka
AU - Komarneni, Sridhar
PY - 2006/2/24
Y1 - 2006/2/24
N2 - Nickel-copper hydroxide acetate with a chemical composition of NiCu(OH)3.1(OCOCH3)0.9 • 0.9H2O was synthesized by hydrothermal heating of an aqueous solution containing nickel acetate, copper acetate, and hydrogen peroxide to 423 K for 4 h. The crystal structure of this compound can be described as brucite-type octahedral (Ni,Cu)(OH)2 layers, where a part of OH sites are replaced by acetate ions located in the interlayer. This compound is stable below about 455 K except that the reversible dissociation and association of the water molecules from/with the interlayer acetate ions occur depending upon the surrounding conditions. Above 455 K, a part of the interlayer acetate ions are released from the solid phase. The solid phase is decomposed to nickel and copper oxides above about 500 K. The synthesized nickel-copper hydroxide acetate takes up little or no Cl- and NO3- but shows high selectivity for multivalent anions such as SeO32- and AsO43-. The uptake of multivalent anions proceeds on the basis of exchange with the acetate ions but may also involve exchange with the hydroxide ions in the matrix hydroxide layers.
AB - Nickel-copper hydroxide acetate with a chemical composition of NiCu(OH)3.1(OCOCH3)0.9 • 0.9H2O was synthesized by hydrothermal heating of an aqueous solution containing nickel acetate, copper acetate, and hydrogen peroxide to 423 K for 4 h. The crystal structure of this compound can be described as brucite-type octahedral (Ni,Cu)(OH)2 layers, where a part of OH sites are replaced by acetate ions located in the interlayer. This compound is stable below about 455 K except that the reversible dissociation and association of the water molecules from/with the interlayer acetate ions occur depending upon the surrounding conditions. Above 455 K, a part of the interlayer acetate ions are released from the solid phase. The solid phase is decomposed to nickel and copper oxides above about 500 K. The synthesized nickel-copper hydroxide acetate takes up little or no Cl- and NO3- but shows high selectivity for multivalent anions such as SeO32- and AsO43-. The uptake of multivalent anions proceeds on the basis of exchange with the acetate ions but may also involve exchange with the hydroxide ions in the matrix hydroxide layers.
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U2 - 10.1016/j.micromeso.2005.10.015
DO - 10.1016/j.micromeso.2005.10.015
M3 - Article
AN - SCOPUS:31644433451
SN - 1387-1811
VL - 89
SP - 123
EP - 131
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
IS - 1-3
ER -