초록 ▼

Chlorine dioxide is generated from an aqueous solution of sodium chlorite in the presence of a catalyst having a reduced rate of deactivation. The catalyst is preferably palladium, or palladium together with another platinum group metal (e.g., Pd+Pt), or palladium together with a Group IB metal (e.g

Chlorine dioxide is generated from an aqueous solution of sodium chlorite in the presence of a catalyst having a reduced rate of deactivation. The catalyst is preferably palladium, or palladium together with another platinum group metal (e.g., Pd+Pt), or palladium together with a Group IB metal (e.g., Pd+Au) deposited on a support modified by Group IA carbonate salt (e.g., K2CO3) or a Group IIA carbonate salt (e.g., CaCO3) or a magnesium salt that can be converted to MgO or a support consisting of a Group IA carbonate salt or a Group IIA carbonate salt or a magnesium salt that can be converted to MgO.

대표청구항 ▼

1. A method for generating chlorine dioxide from a chlorine dioxide precursor, said method comprising contacting an aqueous medium containing a chlorine dioxide precursor with a catalyst having an exterior surface comprising palladium consisting essentially of a catalyst support selected from the gr

1. A method for generating chlorine dioxide from a chlorine dioxide precursor, said method comprising contacting an aqueous medium containing a chlorine dioxide precursor with a catalyst having an exterior surface comprising palladium consisting essentially of a catalyst support selected from the group consisting of (a) a support modified by a Group IA carbonate salt or a Group IIA carbonate salt or MgO and (b) a support consisting of a Group IA carbonate salt or a Group IIA carbonate or MgO, wherein the exterior surface of said catalyst support is impregnated with palladium or palladium and another platinum group metal or palladium and a Group IB metal.