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Catalyst for catalytically removing formaldehyde and carbon monoxide and preparation method thereof

A carbon monoxide and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of limited oxidizing ability of formaldehyde and carbon monoxide, limited ability of reactive oxygen species, affecting the adsorption of formaldehyde and CO, etc. Achieve the effect of improving surface electron transport, efficiently activating oxygen and ozone, and improving efficiency

Active Publication Date: 2022-04-05
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, this catalyst only uses TiO2 as a carrier, which has a large load of noble metals, poor dispersion, small specific surface area, and will affect the formation of formaldehyde and CO adsorption; in addition, the catalyst only relies on noble metals, and the ability to generate active oxygen species is also limited, and the ability to oxidize formaldehyde and carbon monoxide is also limited

Method used

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  • Catalyst for catalytically removing formaldehyde and carbon monoxide and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] The catalyst in this example is Pt / CNT@F-Mg-TiO 2 , that is, Pt loaded CNT@F-Mg-TiO 2, the loading of Pt is 0.6wt%, the F / Ti molar ratio is 15%, the Mg / Ti molar ratio is 1.2%, and the TiO 2 / CNT mass ratio 2:1.

[0035] The preparation method of the catalyst of the present embodiment is as follows:

[0036] (1) 5ml tetrabutyl titanate (C 16 h 36 o 4 Ti) was dissolved in 16ml of absolute ethanol, then 0.584g of pretreated CNT was added, and after ultrasonic stirring at room temperature, solution B was obtained; the pretreatment method of CNT was: adding CNT to concentrated nitric acid with a volume ratio of 1:3 And concentrated sulfuric acid mixture, 80 ℃ stirring treatment for 4h.

[0037] (2) Add 0.082gNH 4 F, 0.4ml acetic acid and 2ml deionized water were dissolved in 4ml ethanol to obtain solution C;

[0038] (3) Add solution C to solution B under stirring, then add 0.045gMg(NO 3 ) 2 ·6H 2 O, continue to stir until a transparent sol is formed, and the prep...

Embodiment 2

[0041] The catalyst in this example is Pt supported CNT@F-Mg-TiO 2 , the loading of Pt is 0.6wt%, the F / Ti molar ratio is 10%, the Mg / Ti molar ratio is 1.2%, and the TiO 2 / CNT mass ratio 2:1, all the other preparation methods are as embodiment 1.

Embodiment 3

[0043] The catalyst in this example is Pt supported CNT@F-Mg-TiO 2 , the loading of Pt is 0.6wt%, the F / Ti molar ratio is 20%, the Mg / Ti molar ratio is 1.2%, and the TiO 2 / CNT mass ratio 2:1, preparation method as embodiment 1.

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Abstract

The invention relates to a catalyst for catalytically removing formaldehyde and carbon monoxide and a preparation method of the catalyst. The general formula of the catalyst is A / CNT (at) F-Mg-TiO2, wherein A is one of Pt, Pd and Au, the loading capacity of A is 0.1-1%, and the balance is CNT (at) F-Mg-TiO2; wherein the feeding molar ratio of F / Ti is 5-20%; the feeding molar ratio of Mg to Ti is 0.2-2%; the mass ratio of TiO2 to CNT is (0.5-4): 1. The catalyst with dual-function catalytic oxidation active sites is obtained by loading a very small amount of Pt on the F and Mg modified CNT (at) TiO2 carrier, oxygen and ozone can be efficiently activated, the catalytic oxidation capacity of the catalyst is remarkably enhanced, and the formaldehyde catalytic oxidation efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, and in particular relates to a catalyst for catalytically removing formaldehyde and carbon monoxide and a preparation method thereof. Background technique [0002] Both formaldehyde and carbon monoxide are the main indoor air pollutants, which have serious harm to the human body. The main hazard of formaldehyde is the irritation to the skin and mucous membranes. When formaldehyde reaches a certain concentration indoors, people will feel uncomfortable, greater than 0.08mg / m 3 High formaldehyde concentrations can cause red eyes, itchy eyes, throat discomfort or pain, hoarseness, sneezing, chest tightness, wheezing, dermatitis, etc. [0003] Carbon monoxide is a highly toxic pollutant to the blood and nervous system. Carbon monoxide in the air enters the human blood through the respiratory system and combines with hemoglobin in the blood to form a reversible conjugate. The combination...

Claims

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Application Information

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IPC IPC(8): B01J27/138B01J35/10B01D53/72B01D53/62B01D53/86
CPCY02A50/20
Inventor 韩晨阳郭国良汪鹤王原原霍彦强郑军妹
Owner NINGBO FOTILE KITCHEN WARE CO LTD