Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Free carbon containing
Reexamination Certificate
2007-04-12
2009-12-08
Mayes, Melvin C (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Free carbon containing
C502S401000, C424S401000, C424S069000, C424S078050, C424S118000, C424S688000, C428S688000, C106S406000, C106S474000
Reexamination Certificate
active
07629293
ABSTRACT:
The BC powders (particle size<10 μm, Taiwan Paiho) are activated with surfactant sodium alginate under stirred for 1 h. The as-prepared BC powders (2 g) are immersed into 100 mL of biamminesilver nitrate ([Ag(NH3)2]NO3) solutions, which are formed by adding 28 wt. % aqueous ammonia into AgNO3solution at room temperature. After stirring for 1 h, dilute aqueous solutions of hydrazine monohydrate are separately prepared and introduced to the BC-AgNO3solutions in appropriate quantities (molar ratio 1:1 with respect to silver nitrate) by a syringe. Stirring is continued under inert atmosphere at room temperature for another 4 h. The BC/Ag particles are separated and washed with deionized water and ethanol, then dried in vacuum at 60° C. for overnight.
REFERENCES:
patent: 2424083 (1947-07-01), Finch et al.
patent: 6509294 (2003-01-01), Tatsumi
patent: WO 2006015317 (2006-02-01), None
Li et al.; Antibacterial Pitch-Based Activated Carbon Fiber Supporting Silver; Carbon; vol. 36 pp. 61-65; 1998.
Hu Ming-Kuan
Lin Wen-Po
Wu Kuo-Hui
Yang Fu-Chu
Gregorio Guinever S
Mayes Melvin C
Mersereau C. G.
National Defense University
Nikolai & Mersereau , P.A.
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