CARBONIZATION OF COMPRESSED CELLULOSE CRYSTALLITE AGGREGATES

• US 3,639,266 A
• Filed: 04/08/1968
• Issued: 02/01/1972
• Est. Priority Date: 04/08/1968
• Status: Expired due to Term

• Current Assignee: Orlando A. Battista
• Original Assignee: Orlando A. Battista
• Inventors: Battista, Orlando A.
• Primary Examiner(s): Meros, Edward J.
• Application Number:
  US04/719,717
• Time in Patent Office: 1,394 Days
• Field of Search: 23/209.2,209.4,209.1 252/421,444,445 264/29
• US Class Current: 502/432
• CPC Class Codes: C01B 32/00 Carbon; Compounds thereof C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48
• CPC Class Codes: C01B 32/324 from waste materials, e.g. tyres or spent sulfite pulp liquor

Abstract

Shaped, pure carbon structures are formed by compacting a binderless mass of cellulose crystallite aggregates to solidify the mass and heating the solidified mass to a carbonizing temperature in an oxygen-free atmosphere. The structure may be activated by heating in steam or carbon dioxide.

Claims

2. The method of claim 1 wherein the cellulose crystallite aggregates have been mechanically attrited.

3. the method of claim 2 wherein the attrited cellulose crystallite aggregates have been spray dried.

4. The method of claim 1 wherein the recovered shaped, carbon structure is further treated by heating in an atmosphere of steam or carbon dioxide to a temperature of at least 600* C.

5. The method of claim 4 wherein the heating of the recovered shaped, carbon structure is effected in an atmosphere of steam.