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Multifunctional loaded catalyst, preparation method thereof, and application of catalyst to combined removal of CO in flue gas

A supported catalyst, multifunctional technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effects of improving oxygen utilization efficiency, inhibiting toxic effects, and strong stability

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

[0005] However, CO and CO 2 The joint removal problem of the still needs to be further resolved

Method used

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  • Multifunctional loaded catalyst, preparation method thereof, and application of catalyst to combined removal of CO in flue gas
  • Multifunctional loaded catalyst, preparation method thereof, and application of catalyst to combined removal of CO in flue gas
  • Multifunctional loaded catalyst, preparation method thereof, and application of catalyst to combined removal of CO in flue gas

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preparation example Construction

[0046] Correspondingly, the present invention provides a kind of preparation method of multifunctional supported catalyst, comprising the following steps:

[0047] A supported metal-based catalyst is provided, the supported metal-based catalyst includes a carrier and a metal-based active component supported on the carrier;

[0048] The supported metal catalyst is mixed with the base component solution and dried to obtain a multifunctional supported catalyst.

[0049] The embodiments of the present invention firstly provide a supported metal catalyst, which includes a carrier and a metal active component supported on the carrier. Wherein, the carrier is preferably selected from activated carbon, silica gel or molecular sieves. The metal active component can be selected from one or more of noble metals, transition metal oxides and transition metal composite oxides; the metal element in the metal active component is preferably one or more of copper and manganese two kinds. In ...

Embodiment 1

[0066] 1. Catalyst precursor preparation:

[0067] The multifunctional catalyst uses wood activated carbon as a carrier, KOH as a base component and copper-manganese composite oxide as an active component.

[0068] According to the molar ratio of base component and copper-manganese salt is 1:2:2, weigh 2.8g KOH, 20.0g C 4 h 6 CuO 4 ·H 2 O and 24.5g C 4 h 6 MnO 4 4H 2 O. Will C 4 h 6 CuO 4 ·H 2 O and C 4 h 6 MnO 4 4H 2 O was dissolved in 400 mL of deionized water, and the constant temperature water bath was continuously stirred for 2 hours to prepare a mixed salt solution with a concentration of 0.5 mol / L. Weigh 150.7g wood activated carbon carrier, add the mixed salt solution, and continue to stir for 12h under 2.0MPa in the autoclave, so that the active component precursor is evenly loaded on the carrier; then the mixed system is moved into a rotary vacuum evaporator , dried at 85° C. for 12 hours, and then calcined in a muffle furnace at 350° C. for 6 hours ...

Embodiment 2

[0076] 1. Catalyst precursor preparation:

[0077] The multifunctional catalyst uses coconut shell activated carbon as a carrier, NaOH as a base component, and copper-manganese composite oxide as an active component.

[0078] Similar to Example 1, the molar ratio of base component and copper-manganese salt is 1:2:2, respectively weigh 2.0g NaOH, 20.0g C 4 h 6 CuO 4 ·H 2 O and 24.5g C 4 h 6 MnO 4 4H 2 O. Will C 4 h 6 CuO 4 ·H 2 O and C 4 h 6 MnO 4 4H 2 O was dissolved in 400 mL of deionized water, and the constant temperature water bath was continuously stirred for 2 hours to prepare a mixed salt solution with a concentration of 0.5 mol / L. The coconut shell activated carbon carrier of 146.2g was added to the mixed salt solution, and was continuously stirred for 8h under the high-pressure reactor 2.0MPa, so that the active component precursor was evenly loaded on the carrier; then the mixed system was moved into a rotary vacuum evaporator, and was heated at 105 ...

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Abstract

The invention provides a multifunctional loaded catalyst, a preparation method thereof, and application of the catalyst to combined removal of CO in flue gas. The multifunctional loaded catalyst comprises a carrier as well as an alkali-based component and a metal active component which are loaded on the carrier. The loaded metal catalyst is modified by the alkali-based component of KOH or NaOH andthe like, so the synergistic effect of CO2 removal and CO removal can be realized. The multifunctional catalyst is simple in preparation method, high in CO2 removal rate and CO catalytic reaction activity, high in stability after long-time use and suitable for CO and CO2 combined removal in fire disaster flue gas of closed space such as a submarine, a space station and a refuge chamber for mining, so that microenvironment purification after the closed space fire disaster is realized. The experiment indicates the multifunctional catalyst provided by the invention can realize synergistic effective removal of high-concentration CO2 (0.5 to 15.0 percent) and CO (0.1 to 0.5 percent) at 0 to 200 DEG C.

Description

technical field [0001] The invention belongs to the field of micro-environmental air quality control technology and public safety technology, and particularly relates to a multifunctional supported catalyst and its preparation method and the application of combined removal of CO in flue gas. The catalyst can be used to jointly eliminate CO and CO in flue gas 2 , especially suitable for micro-environment purification after fire in closed 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. Typical enclosed spaces such as submarines, space stations, and mining refuge chambers are limited in entrance and exit and are relatively isolated from the outside world. In the event of a fire, conventional smok...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/34B01J37/02B01J37/08B01D53/86B01D53/62
CPCY02A50/20Y02C20/40
Inventor 陆守香郭亚飞林锦黎昌海
Owner UNIV OF SCI & TECH OF CHINA
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