METHOD FOR MANUFACTURING MOLECULAR SIEVE ACTIVE CARBON

PROBLEM TO BE SOLVED: To provide a method for manufacturing molecular sieve active carbon having a medium within a micropore region of pore distribution. SOLUTION: The method for manufacturing the molecular sieve active carbon has a process in which condensation type tannin powder is dissolved in an...

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Hauptverfasser: HAMAGUCHI KAZUHIKO, SHIRATO WATARU
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for manufacturing molecular sieve active carbon having a medium within a micropore region of pore distribution. SOLUTION: The method for manufacturing the molecular sieve active carbon has a process in which condensation type tannin powder is dissolved in an aqueous solution of sodium hydroxide or potassium hydroxide or lithium hydroxide of pH 7 to 10 to produce a solution, a process in which the solution is blended with an aldehyde aqueous solution or hexamethylenetetramine, a process in which the obtained mixture solution is heated to produce a stable gelatinized composition, a process in which the gelatinized composition is dried in the temperature range of room temperature to 200°C for 5 to 72 hours, a process in which dried composition is carbonized at 400 to 600°C for 1 to 3 hours in an inert gaseous atmosphere and a process in which activation treatment to the carbonized composition is performed by feeding an inert gas containing carbon dioxide or steam at a rate of 0.1 to 1 mol/min/100 g and heating at 600 to 1,300°C for 0.5 to 2 hours. COPYRIGHT: (C)2004,JPO