Effect of Oxides and Nitrates of Lead on the Sintering and Densification of Hydroxyapatite Adsorbents | Zendy

Ange Nzihou | Zendy; Benu Adhikari | Zendy

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Effect of Oxides and Nitrates of Lead on the Sintering and Densification of Hydroxyapatite Adsorbents

Author(s) -

Ange Nzihou,

Benu Adhikari

Publication year - 2004

Publication title -

industrial and engineering chemistry research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.878

H-Index - 221

eISSN - 1520-5045

pISSN - 0888-5885

DOI - 10.1021/ie030645i

Subject(s) - sintering , materials science , lead oxide , shrinkage , adsorption , chemical engineering , calcium oxide , oxide , calcium nitrate , metallurgy , calcium , composite material , chemistry , organic chemistry , engineering

International audienceThe effect of lead oxide (PbO2) and lead nitrate [Pb(NO3)(2)] on sintering and densification of calcium hydroxyapatite (CaHAP) was studied using surface area reduction and shrinkage. The effect of concentration of these additives was studied using 2% and 10% (w/w) mixtures. The addition of (PbO2) and [Pb(NO3)(2)] accelerated the surface area reduction especially when the sintering was accompanied with densification. These additives lowered the densification temperature of HAP. Much lower final densification was achieved when 10% of these additives were used. The rate of densification of pure HAP had only one peak, whereas the mixture had two or more peaks indicating that the additives bring about multiple speeds in the densification process

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