Patent ID: 6276287
Filing Date: 2001-08-21
Classification: B01D,B01J

Abstract:
A method of using an iron compound catalyst for inhibiting generation of dioxin, which iron compound catalyst comprises iron oxide particles, iron oxide hydroxide particles or a mixture thereof having a catalytic activity capable of converting not less than 15% of carbon monoxide into carbon dioxide when 2.8.times.10.sup.-4 mol of iron oxide particles obtained by heat-treating said iron compound catalyst in air at a temperature of 800.degree. C. for 15 minutes, are instantaneously contacted with 6.1.times.10.sup.-7 mol of carbon monoxide at a temperature of 250.degree. C. at a space velocity (SV) of 42,400 h.sup.-1 in an inert gas atmosphere using a pulse catalytic reactor,said iron oxide particles or said iron oxide hydroxide particles having an average particle size of 0.01 to 2.0 .mu.m, a BET specific surface area of 0.2 to 200 m.sup.2 /g, a phosphorus content of less than or equal to 0.02% by weight, a sulfur content of less than or equal to 0.1% by weight and a sodium content of less than or equal to 0.2% by weight.