Active carbon and process for its production

• US 6,064,560 A
• Filed: 04/01/1997
• Issued: 05/16/2000
• Est. Priority Date: 04/10/1996
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Chemical Corporation (Mitsubishi Chemical Group Corp.)
• Original Assignee: Mitsubishi Chemical Corporation (Mitsubishi Chemical Group Corp.)
• Inventors: Okuyama, Kohei, Suzuki, Mitsuo, Hirahara, Satoshi
• Primary Examiner(s): Griffin, Steven P.
• Assistant Examiner(s): Hendrickson, Stuart L.
• Application Number:
  US08/829,947
• Time in Patent Office: 1,141 Days
• Field of Search: 361/502, 502/180, 502/416, 423/445 R
• US Class Current: 361/502
• CPC Class Codes: C01B 32/342 characterised by non-gaseous activating agents
• CPC Class Codes: H05K 3/3421 Leaded components

Abstract

Active carbon of which the pore size distribution as measured by a Cranston-Inkley method has a peak within each of ranges of from 10 to 20 Å and from 20 to 100 Å.

Claims

1. Active carbon of which the pore size distribution as measured by a Cranston-Inkley method has a peak within each of ranges of from 10 to 20 Å

and from 20 to 100 Å

.

2. A capacitor consisting essentially of conducting plates separated by a dielectric, wherein the dielectric is the active carbon as defined in claim 1.

3. A process for producing the active carbon, of claim 1 which comprises heat-drying an organic gel obtained by polymerizing an aromatic compound having a plurality of phenolic OH groups, to obtain a carbonized carbon aerogel, followed by alkali salts activation of the carbon aerogel.