公开(公告)号：US3891574A

公开(公告)日：1975-06-24

申请号：US28550972

申请日：1972-08-31

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KOBAYASHI KAZUO ,  WATARI SHINJIRO ,  KATO TSUTOMU ,  SHIRAISHI MINORU ,  KAWANA YOSHIO

IPC: B01J2/00 ,  B01J20/20 ,  C01B31/08 ,  C01B31/10 ,  C01B31/14

CPC classification number: C01B32/382 ,  Y10S210/924

Abstract: A sphere of carbon which encloses an empty space and has pores formed in the shell thereof so as to provide free passage between the interior and the exterior of the sphere is obtained by coating a spherical core with a layer of finely divided coal and subjecting the coated sphere to a heat treatment at a temperature higher than the decomposition temperature of the substance of which the core is formed. The heat treatment causes the core to be thermally decomposed and evacuated from the coat which, by this time, has been hardened to a shell. A lightweight hollow sphere of activated carbon which has been activated not merely on the outer surface of the sphere but equally on the inner surface defining the empty space is produced by calcining for activation the said sphere of finely divided coal, with the said fine pores retained intact.

Abstract translation: 通过用细碎煤层涂覆球形芯并将涂覆的球体覆盖在外壳上，并且在其壳体中形成有孔以便在球体的内部和外部之间提供自由通道的碳球体 在高于形成芯的物质的分解温度的温度下进行热处理。 热处理使芯体被热分解并从涂层中排出，此时，已将其硬化成壳。 通过煅烧活化所述细碎煤球，产生不仅仅在球体的外表面上而且同等地限定在空的空间的内表面上的活性炭的轻质空心球，所述细孔保留 完整。