Nitrobenzene → 1-Methylnaphthalene

80 parts by weight of a pitch and 20 parts by weight of methylnaphthalene were thermally mixed with each other by the use of a small-scale test spinning machine. The pitch used was a residue obtained by reduced pressure distillation of a botton oil which was produced in the production of ethylene, and had a softening point of 180° C, a carbon content of 92 wt%, a hydrogen/carbon ratio of 0.84 and a nitrobenzene-insoluble fraction of 2 wt%. The mixture was spinned out together with an air flow through a nozzle having a diameter of 0.5 mm at a nozzle temperature of 130° C to form a filament. The filament was immersed in naphtha to remove therefrom methylnaphthalene to obtain a fibrous material composed substantially of the pitch. The fibrous material which was dried contained methylnaphthalene only in an amount less than 1 %. The fibrous pitch material was heated by means of heating air up to 300° C at a heating rate of 25° C/hr, and maintained at 300° C for 1 hour to obtain an infusible fibrous pitch mat. Then, the resultant fibre, was thermally treated in an atmosphere of nitrogen up to 1000° C at a heating rate of 300° C/hr and maintained at 1000° C for 1 hour to obtain a porous fibrous carbon material.

1. customa softening point of 180° C
2. customat a nozzle temperature of 130° C
3. customto form a filament
4. customto remove

ORDレコード

ord-4c44b4ad95174825b372b3143a213bf2

出典データセット

uspto-grants-1977_01

DOI

10.6084/m9.figshare.5104873.v1

特許番号

USRE029101