Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Free carbon containing
Patent
1991-10-30
1993-12-14
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Free carbon containing
2101982, 210656, 264 295, 428332, 428407, 502416, 502417, 502418, B01J 2020, C01B 3104, C01B 3100, B01D 1508
Patent
active
052702804
ABSTRACT:
A packing material for liquid chromatography is produced by mixing 1.0 part by weight of carbon black, 0.5 to 2.5 parts by weight of one or a mixture of a synthetic resin which can be graphitized by heating and a toluene- or benzene-soluble component of pitches, and an organic solvent to obtain a mixture. The carbon black has a particle diameter of 12 to 40 nm, a specific surface area of 50 to 650 m.sup.2 /g, a DBP oil absorption amount of 50 to 150 ml/100 g. The synthetic resin is one selected from phenol resin, furan resin, furfural resin, divinylbenzene resin and urea resin. The pitches are ones selected from petroleum pitches, coal-tar pitches and liquefied coal oil. The mixture is granulated by spray granulation or emulsion granulation to obtain granules whose ratio L.sub.min /L.sub.max of a minor axis diameter L.sub.min to a major axis diameter L.sub.max is 0.90 to 1.0. The heat treatment of the granules is also made in an inert gas under pressure.
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Ichikawa Hiroshi
Kato Yoshio
Kawai Takanobu
Komiya Katsuo
Moriyama Hiroyuki
Konopka Paul E.
Nippon Carbon Co. Ltd.
Tosoh Corporation
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