Process for producing mesocarbon microbeads of uniform...

Details Process for producing mesocarbon microbeads of uniform... Process for producing mesocarbon microbeads of uniform...

B - Operations, Transporting

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196/36, 252/40

B01J 35/08 (2006.01) C10C 3/00 (2006.01)

Patent

CA 1158582

ABSTRACT OF THE DISCLOSURE Mesocarbon microbeads of narrow particle-size distribution are produced by: subjecting a heavy oil to a primary heat treatment at a temperature T1 to prepare a pitch containing mesophase microspheres; once cooling this pitch to a temperature lower than its softening point; thereafter subjecting the pitch to a secondary heat treatment at a temperature T2, which is higher than 350°C and lower than (T1-40°C); cooling the pitch at a cool rate lower than 200°C/hour; separating from the pitch mesophase microspheres which precipitated in the secondary heat-treatment step; and thereafter obtaining by solvent extraction mesophase microspheres of substantially uniform particle size formed in the residual pitch. The mesocarbon beads of narrow particle-size distribution thus obtained are particularly suitable for use as chromatograph packing material, catalyst support, and other uses.

389560

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