Claims
- 1. A process for preparing active carbon having a specific surface area of 3000 to 4600 m.sup.2 /g, the process comprising:
- depositing an activating auxiliary on the surface of meso-carbon microbeads obtained from coal-derived pitch, the activating auxiliary being at least one of NaOH and KOH and used in an amount about 5 to about 10 times the weight of meso-carbon microbeads, and
- activating washing and drying the meso-carbon microbeads.
- 2. A process according to claim 1 wherein a surfactant selected from the group consisting of acetone, methyl alcohol and ethyl alcohol is used in depositing the activating auxiliary on the surface of meso-carbon microbeads.
- 3. Active carbon prepared by the process of claim 1 from activated meso-carbon microbeads obtained from coal-derived pitch and having pores, the active carbon being characterized in that
- (i) the carbon is optically anisotropic
- (ii) 90% or more of the whole of carbon consists of particles 80 .mu.m or less in particle size,
- (iii) the micropore of 20 .ANG. or less in pore diameter constitute 85% or more of the entire pore volume, and
- (iv) the carbon has a specific surface area of 3000 to 4600 m.sup.2 /g.
Priority Claims (2)
Number |
Date |
Country |
Kind |
62-294831 |
Nov 1987 |
JPX |
|
63-158510 |
Jun 1988 |
JPX |
|
Parent Case Info
This application is a continuation-in-part application of Serial No. 391,515 filed Jul. 19, 1989, now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3818874 |
Wennerberg et al. |
Jun 1974 |
|
4261709 |
Itoga et al. |
Apr 1981 |
|
4488957 |
Noguchi et al. |
Dec 1984 |
|
4640822 |
Noguchi et al. |
Feb 1987 |
|
Foreign Referenced Citations (6)
Number |
Date |
Country |
231328 |
Dec 1985 |
DDX |
161316 |
Aug 1985 |
JPX |
255604 |
Dec 1985 |
JPX |
205611 |
Sep 1986 |
JPX |
283808 |
Dec 1987 |
JPX |
1298938 |
Dec 1972 |
GBX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
391515 |
Jul 1989 |
|