▎ 摘　　要

NOVELTY - Preparing the catalyzer for low-temperature catalytic oxidation of carbon monoxide and methylidyne comprises (1) preparing graphene oxide by modified Hummers method, (2) preparing ZrxTi1-xO2/GE composite oxide carrier by ultrasonically dispersing 10-30 mg graphene oxide in 40 ml deionized water to obtain A liquid, dissolving titanium sulfate in deionized water to obtain liquid B, dissolving zirconium oxychloride octahydrate is dissolved in deionized water to obtain C liquid, adding urea and deionized water, heating in a water bath, and reacting, adding into a polytetrafluoro-lined hydrothermal kettle, heating and reacting to obtain a suspension, and centrifuging suspension, washing, drying, calcining and grinding, and (3) adding ZrxTi1-xO2/GE composite oxide carrier powder into ruthenium chloride solution, performing ultrasonic treatment, drying, heating for calcination for 1-3 hours and grinding the final product. USE - The method for preparing catalyzer useful for low-temperature catalytic oxidation of carbon monoxide and methylidene (claimed). ADVANTAGE - The method ensures that the price is relative to platinum, palladium, rhodium and noble metal catalyst is low, ensures the catalytic oxidation efficiency, and has less toxicity. DETAILED DESCRIPTION - Preparing the catalyzer for low-temperature catalytic oxidation of carbon monoxide and methylidyne comprises (1) preparing graphene oxide by modified Hummers method, (2) preparation of ZrxTi1-xO2/GE composite oxide carrier as follows (2a) ultrasonically dispersing 10-30 mg graphene oxide in 40 ml deionized water to obtain A liquid, (2b) dissolving titanium sulfate in deionized water to obtain liquid B, (2c) dissolving zirconium oxychloride octahydrate is dissolved in deionized water to obtain C liquid, and the concentration of titanium sulfate in liquid B and the sum of the concentrations of zirconium oxychloride octahydrate in liquid C are 1.4-1.8 mol/l, (2d) under stirring state, adding 20 ml B liquid and 20 ml C liquid into A liquid, stirring for 20-40 minutes to obtain a mixed solution, (2e) adding urea with a molar amount of 10-30 times the molar amount of the total metal into the mixed solution, and adding deionized water with a volume of 0.4-0.6 times the mixed solution, heating to 70-90degrees Celsius in a water bath, and stirring and reacting for 3-5 hours to obtain the reaction solution, (2f) adding the reaction solution into a polytetrafluoro-lined hydrothermal kettle, heating to 110-130degrees Celsius and reacting for 20-28 hours to obtain a suspension, and (2g) centrifuging the suspension, washing, drying at 70-90degrees Celsius, and calcining at 500-700degrees Celsius, and grinding to obtain ZrxTi1-xO2/GE composite oxide carrier powder, and (3) adding ZrxTi1-xO2/GE composite oxide carrier powder into ruthenium chloride solution, controlling the total mass of active components to be 0.5-2% of the carrier powder, performing ultrasonic treatment for 0.5-1.5 hours, drying at 70-90degrees Celsius, heating to 300-500degrees Celsius at 2-4degrees Celsius/minutes for calcination for 1-3 hours and grinding the final product. An INDEPENDENT CLAIM is also included for ruthenium/zirconiumxtitanium1-xO2/GE catalyst is useful in a DOC reaction system, where the reaction temperature of 80-320degrees Celsius, the total flow of control gas is 1 l/minute, the air velocity is 60000/h, converting carbon monoxide and Propane into non-toxic and non-polluting carbon dioxide and water under the condition of carbon monoxide conversion rate greater than or equal to 90%.