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Carbon nanotube supported catalyst and preparation method thereof as well as application of carbon nanotube supported catalyst in low-temperature catalytic oxidation of CO

A supported catalyst, carbon nanotube technology, applied in the field of environment and public safety, can solve the problems of limited material adsorption capacity and rate, unsuitable closed space CO removal, complicated operation and system, etc., to achieve high catalytic activity and stability. performance, low cost and simple preparation method

Inactive Publication Date: 2018-01-12
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 application of the conventional physical adsorption method is mainly limited by the adsorption capacity and rate of the material, while the plasma method has problems such as operation and system complexity, and is not suitable for the removal of CO in closed spaces.

Method used

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  • Carbon nanotube supported catalyst and preparation method thereof as well as application of carbon nanotube supported catalyst in low-temperature catalytic oxidation of CO
  • Carbon nanotube supported catalyst and preparation method thereof as well as application of carbon nanotube supported catalyst in low-temperature catalytic oxidation of CO
  • Carbon nanotube supported catalyst and preparation method thereof as well as application of carbon nanotube supported catalyst in low-temperature catalytic oxidation of CO

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preparation example Construction

[0035]Correspondingly, the present invention provides a method for preparing a carbon nanotube-supported catalyst, comprising the following steps: mixing the carbon nanotubes with an impregnation solution containing copper salt and manganese salt to obtain a mixture; drying the mixture and then roasting , to obtain carbon nanotube-supported catalysts.

[0036] The method for preparing the carbon nanotube-loaded catalyst of the invention is a simple impregnation method, is easy to operate, and is suitable for industrial popularization and application.

[0037] In the embodiment of the present invention, the impregnating liquid can be prepared first: according to the molar ratio of the active components, a certain mass of copper salt and manganese salt are respectively weighed and dissolved in water to obtain a (mixed) impregnating liquid containing copper salt and manganese salt. Specifically, copper and manganese salts can be dissolved in 200mL of deionized water, and the cons...

Embodiment 1

[0050] The catalyst of this embodiment uses carbon nanotube material (MWCNTs) as the carrier, and the acetate of copper and manganese is the precursor of the active component. The corresponding copper-manganese composite oxide loading on the carrier is 8%, wherein copper, manganese The molar ratio of manganese acetate is 1:1.

[0051] The concrete preparation method that this embodiment relates to catalyst is:

[0052] Step 1: Weigh 96.0g of carbon nanotubes, place them in a constant temperature drying oven, and dry them at 85°C for 4 hours;

[0053] Step 2: take by weighing 10.0g copper acetate (C 4 h 6 CuO 4 ·H 2 O) and 12.3g manganese acetate (C 4 h 6 MnO 4 4H 2 (2) was dissolved in 200mL deionized water, and was continuously stirred in a constant temperature water bath for 2h to prepare a mixed impregnation solution with a concentration of 0.5mol / L;

[0054] Step 3: adding the dried and pretreated carbon nanotubes in step 1 to the mixed impregnating solution prepa...

Embodiment 2

[0064] The catalyst in this embodiment uses carbon nanotube material as the carrier, copper and manganese acetate as the active component precursor, and the corresponding copper-manganese composite oxide loading on the carrier is 8%, wherein copper and manganese acetate The molar ratio of acid salt is 1:8.

[0065] The concrete preparation method that this embodiment relates to catalyst is:

[0066] Step 1: Weigh 99.1g of carbon nanotube carrier and place it in a constant temperature drying oven, and dry it at 105°C for 4 hours;

[0067] Step 2: take by weighing 2.2g copper acetate (C 4 h 6 CuO 4 ·H 2 O) and 21.8g manganese acetate (C 4 h 6 MnO 4 4H 2 (2) was dissolved in 200mL deionized water, and was continuously stirred in a constant temperature water bath for 2h to prepare a mixed impregnation solution with a concentration of 0.5mol / L;

[0068] Step 3: adding the dry and pretreated carbon nanotube carrier in step 1 to the mixed impregnation solution prepared in step...

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Abstract

The invention provides a carbon nanotube supported catalyst and a preparation method thereof as well as application of the carbon nanotube supported catalyst in low-temperature catalytic oxidation ofCO. The method comprises the following steps: mixing carbon nanotubes with impregnation liquid containing copper salt and manganese salt to obtain a mixture; drying the mixture and then roasting the mixture to obtain the carbon nanotube supported catalyst. The catalyst takes the carbon nanotubes as a carrier, and takes copper manganese complex oxide as an active ingredient supported on the carrier. The experimental results show that the catalyst prepared by the embodiment of the invention keeps relatively-high catalytic activity and stability for 0.1 to 0.5 percent of CO under the condition that the low temperature is 0 to 22 DEG C, is suitable for eliminating CO by low-temperature catalysis in a typical enclosed space and also can be used for a toxin filtering agent material of respiratory protective equipment for emergency rescue in the enclosed space. Besides, the preparation method of the carbon nanotube supported catalyst, provided by the invention, is simple; active ingredients are low in content, and the cost is relatively low.

Description

technical field [0001] The invention belongs to the technical field of environment and public safety, and in particular relates to a carbon nanotube-supported catalyst and its preparation method and the application of low-temperature catalytic oxidation of CO. The catalyst is especially suitable for CO in typical enclosed spaces such as submarines, space stations, and coal mine refuge chambers. Low temperature catalytic elimination. 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 such enclosed spaces, low concentrations of carbon monoxide (CO) are released from the operation of mechanical equipment and the oxidative decomposition of materials. Due to the limited ventilation of the closed space, the CO produced cannot be discharged and accumulates in the space t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01D53/86B01D53/62
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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