Manufacturing process of chlorine
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsTadamitsu Kiyoura, Yasuo Kogure, Tokio Nagayama, Kazuo Kanaya
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Abstract
In the process of producing chlorine by oxidizing hydrogen chloride with molecular oxygen, activity of the catalyst can be maintained for a long period with a high conversion ratio under high space velocity of gaseous raw materials without using additives as in conventional methods, in the presence of a crystalline chromic oxide catalyst obtained by supporting relatively large amounts of chromic oxide on a silicon oxide carrier having a specified pore volume.
Claims7
A manufacturing process of chlorine which comprises oxidizing hydrogen chloride with molecular oxygen in the presence of a chromic oxide catalyst, which has a microcrystal size of from 200 to 500 .ANG., and which is obtained by supporting chromic oxide in an amount of from 20 to 90 wt. % as chromia on a silicon oxide carrier having a pore volume in the range of from 0.3 to 1.8 cc/g and conducting a heat treatment at a temperature of from 450.degree. to 700.degree. C.
Dependencies are inferred from the claim text.