Loading-type copper-manganese catalyst and preparation method and application in CO low-temperature catalytic oxidation thereof

A catalyst, supported technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of system safety to be improved, high catalyst activity dependence, and high energy consumption of catalytic reaction, reaching The effect of improving low-temperature CO catalytic activity, simple preparation method, and high catalytic activity

Active Publication Date: 2018-01-05
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of this technology are: the high activity of the catalyst depends on the high operating temperature, the energy consumption of the catalytic reaction is high, and the safety of the system needs to be improved

Method used

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  • Loading-type copper-manganese catalyst and preparation method and application in CO low-temperature catalytic oxidation thereof
  • Loading-type copper-manganese catalyst and preparation method and application in CO low-temperature catalytic oxidation thereof
  • Loading-type copper-manganese catalyst and preparation method and application in CO low-temperature catalytic oxidation thereof

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Experimental program
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preparation example Construction

[0034] Correspondingly, the present invention provides a preparation method of a supported copper-manganese catalyst, comprising the following steps: mixing cerium oxide with an impregnation solution containing copper salt and manganese salt to obtain a mixture; drying the mixture to obtain a catalyst A precursor: roasting the catalyst precursor to obtain a supported copper-manganese catalyst.

[0035] The method for preparing the supported copper-manganese catalyst in the invention is a mixed impregnation method, which is simple and easy to operate, and is suitable for industrial popularization and application.

Embodiment 1

[0049] The catalyst of this embodiment uses CeO 2 As the carrier, with CuO and MnO 2 Is the active component, the loading of the active component on the carrier is 14%, where CuO and MnO 2 The molar ratio is 1:1.

[0050] The concrete preparation method that this embodiment relates to catalyst is:

[0051] Step 1, according to the mass ratio of the active component and the carrier, take 122.6g of Ce(Ac) 2 ·nH 2 O was calcined at 550 °C for 6 h in a muffle furnace to prepare CeO 2 carrier;

[0052] Step 2, according to the mass ratio of the active component and the carrier, take 12.5g of Cu(Ac) 2 ·H 2 O and 15.3 g of Mn(Ac) 2 4H 2 O was pre-mixed and dissolved in 500mL deionized water, stirred in a constant temperature water bath at 45°C for 8 hours, and a mixed impregnating solution with a concentration of 0.25mol / L was prepared;

[0053] Step 3, the CeO prepared in step 1 2 The support is immersed in Cu(Ac) 2 ·H 2 O and Mn(Ac) 2 4H 2 In the mixed impregnation s...

Embodiment 2

[0062] The catalyst of this embodiment uses CeO 2 As the carrier, with CuO and MnO 2 Is the active component, the loading of the active component on the carrier is 14%, where CuO and MnO 2 The molar ratio is 1:5.

[0063]The concrete preparation method that this embodiment relates to catalyst is:

[0064] Step 1, according to the mass ratio of the active component and the carrier, get 127.3g of Ce(Ac) 2 ·nH 2 O was calcined at 550 °C for 6 h in a muffle furnace to prepare CeO 2 carrier;

[0065] Step 2, according to the mass ratio of the active component and the carrier, take 4.2g of Cu(Ac) 2 ·H 2 O and 25.5 g of Mn(Ac) 2 4H 2 O was pre-mixed and dissolved in 500mL deionized water, stirred in a constant temperature water bath at 45°C for 8 hours, and a mixed impregnating solution with a concentration of 0.25mol / L was prepared;

[0066] Step 3, the CeO prepared in step 1 2 The support is immersed in Cu(Ac) 2 ·H 2 O and Mn(Ac) 2 4H 2 In the mixed impregnation solu...

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Abstract

The invention provides a loading-type copper-manganese catalyst and a preparation method and application in CO low-temperature catalytic oxidation thereof. The method includes the steps of blending ceric oxide with steeping liquid containing copper salt and manganese salt to obtain a mixture; drying the mixture to obtain a catalyst precursor; conducting calcine on the catalyst precursor to obtainthe loading-type copper-manganese catalyst. The catalyst includes a ceric oxide carrier and active components loaded on the carrier, wherein the active components are copper oxide and manganese dioxide. According to an experimental result, the loading -type copper-manganese catalyst prepared in the embodiment of the invention can maintain high catalytic activity for high-concentration CO catalyticoxidation (4000 ppm) under a low-temperature condition (0-150 DEG C), effectively reduce catalytic temperature of traditional Hopcalite and decrease energy consumption of a system reaction. Additionally, the preparation method is simple, the prepared catalyst can be applied to low-temperature CO catalytic clearance of sealed spaces including submarines and space stations and the like.

Description

technical field [0001] The invention belongs to the technical field of environment and public safety, and in particular relates to a supported copper-manganese catalyst and its preparation method and the application of low-temperature catalytic oxidation of CO. The catalyst can be used for catalytic oxidation of CO, specifically for CO removal in closed spaces, especially for Low-temperature catalytic elimination of CO in typical enclosed spaces such as submarines, space stations, and coal mine refuge chambers. Background technique [0002] With the development of social economy and the advancement of science and technology, human beings have increasing demands for space exploration, deep-sea navigation and mining of underground mineral resources. Period persistence. In closed spaces such as submarines and space stations, under normal air regeneration mode, low concentrations of carbon monoxide (CO) will be released during the operation of mechanical equipment and oxidative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J37/02B01J37/08B01D53/86B01D53/62
CPCY02A50/20
Inventor 陆守香郭亚飞林锦黎昌海
Owner UNIV OF SCI & TECH OF CHINA
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