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Kieselguhr catalyst for eliminating carbon monoxide at normal temperature and preparation method thereof

A carbon monoxide and diatomaceous earth technology, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of increased catalyst costs and inability to be widely used in industrial production , to achieve the effect of high yield, long life and low price

Inactive Publication Date: 2011-01-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main components of the catalyst mentioned in CN01124955.2 that can catalyze oxidation and eliminate carbon monoxide at room temperature are oxides of Au, Pt, Pd, Ni, Co, Fe, Cu, Zn, and the raw materials use noble metals Au, Pt and Pd, Catalyst cost increases substantially
[0003] Chinese patent CN200710120654.8 discloses "a catalyst for removing trace CO and its preparation method and application" in which the active components Au and Pd are loaded on diatomaceous earth and other carriers as catalysts to oxidize CO into CO 2 , the catalyst can only remove trace amounts of CO gas and cannot be widely used in industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A diatomite catalyst for eliminating carbon monoxide at normal temperature is composed of 38g of carrier diatomite and 31.6g of active component metal oxide, wherein the metal oxide mixture is composed of 3g copper oxide, 16g iron oxide, 4g nickel oxide, 1.8 g manganese oxide, 4g cobalt oxide and 2.8g zinc oxide.

[0019] Its preparation method is as follows:

[0020] At room temperature, mix 4g of copper oxide, 7g of ferric hydroxide, 3g of iron oxide, 5g of nickel oxide, 2g of manganese oxide, 5g of cobalt oxide and 3g of zinc oxide, add 180mL of 0.1wt% sulfuric acid solution, at a speed of 50 rpm Stir to dissolve the solid to obtain a mixed solution with a total metal ion concentration of 13.8%; stir and disperse 38 g of diatomaceous earth in the mixed solution of metal ions at a speed of 50 rpm for 2 hours, then filter the solution, wash, and dry at 80°C 20 hours; calcining the obtained solid mixture at 400° C. for 1 hour to obtain a finished diatomite catalyst. T...

Embodiment 2

[0022] A diatomite catalyst for eliminating carbon monoxide at room temperature, consisting of 50 g of carrier diatom earth and 17.9 g of active component metal oxides, wherein the metal oxide mixture consists of 1.2 g of copper oxide, 5.6 g of iron oxide, 1.5 g of oxide Nickel, 3.5g manganese oxide, 3.7g cobalt oxide and 2.4g zinc oxide.

[0023] Its preparation method is as follows:

[0024] At room temperature, mix 3g of copper acetate, 6g of ferric nitrate, 4g of nickel acetate, 7g of manganese acetate, 9g of cobalt acetate and 6g of zinc nitrate, add 200mL of water, stir at a speed of 250 rpm to dissolve the solid to obtain the total concentration of metal ions It is a 14.8% mixed solution; 50g of diatomaceous earth is stirred and dispersed in the mixed solution of metal ions at a speed of 400 rpm for 8 hours, and then the solution is filtered, washed, and dried at 200°C for 2 hours; the solid mixture obtained at 1000 ℃ calcination, the calcination time is 2 hours, and t...

Embodiment 3

[0026] A diatomite catalyst for eliminating carbon monoxide at normal temperature is composed of 68g of carrier diatomite and 28g of active component metal oxide, wherein the metal oxide mixture consists of 2.4g copper oxide, 5.8g iron oxide, 9g nickel oxide, 2.8g manganese oxide, 0.8g cobalt oxide and 7.2g zinc oxide.

[0027] Its preparation method is as follows:

[0028] At room temperature, mix 3g copper hydroxide, 6g iron oxide, 10g nickel oxide, 3g manganese hydroxide, 1g cobalt hydroxide and 9g zinc hydroxide, add 100mL 3wt% nitric acid solution, stir at 800 rpm The solid was dissolved to obtain a mixed solution with a total concentration of metal ions of 24%; 68g of diatomaceous earth was stirred and dispersed in the mixed solution of metal ions at a speed of 800 rpm for 20 hours, then the solution was filtered, washed, and dried at 120°C for 4 hours ; Calcining the obtained solid mixture at 700° C. for 5 hours to obtain a finished diatomite catalyst. The removal rat...

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Abstract

The invention provides a kieselguhr catalyst for eliminating carbon monoxide at normal temperature and a preparation method thereof. The catalyst consists of carrier kieselguhr and metallic oxide mixture used as an active component, wherein the metallic oxide mixture is a mixture of copper oxide, iron oxide, nickel oxide, manganese oxide, cobalt oxide and zinc oxide. The preparation method comprises the following steps of: mixing a copper-containing compound, an iron-containing compound, a nickel-containing compound, a manganese-containing compound, a cobalt-containing compound and a zinc-containing compound; dissolving: dispersing the kieselguhr into the mixed solution; and filtering, washing, drying and roasting. The invention has the advantages of simple method and high carbon monoxide elimination efficiency of the obtained catalyst at normal temperature.

Description

technical field [0001] The invention relates to a diatomite catalyst for eliminating carbon monoxide at normal temperature and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] In recent years, most of the removal methods for CO gas are solution absorption method and noble metal catalytic conversion method. Such as the solution absorption method introduced in US 301493, this method can only work on trace amounts of carbon monoxide mixed gas. The main components of the catalyst mentioned in CN01124955.2 that can catalyze oxidation and eliminate carbon monoxide at room temperature are oxides of Au, Pt, Pd, Ni, Co, Fe, Cu, Zn, and the raw materials use noble metals Au, Pt and Pd, Catalyst cost increases substantially. [0003] Chinese patent CN200710120654.8 discloses "a catalyst for removing trace CO and its preparation method and application" in which the active components Au and Pd are loaded on diatomaceous eart...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01D53/62B01D53/94B01D53/86
CPCY02A50/20
Inventor 丁彬毛雪俞建勇孙刚
Owner DONGHUA UNIV
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