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Adsorption catalyst for in-situ degradation of formaldehyde and preparation method thereof
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A formaldehyde adsorption and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve the problems of low degradation efficiency, insufficient adhesion of formaldehyde adsorption catalysts, etc., to improve quality, The effect of improving adhesion and increasing economic benefits
Inactive Publication Date: 2021-01-15
湖南白绿林环保科技有限公司
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[0005] Aiming at the deficiencies of the prior art, the present invention provides an adsorption catalyst for in-situ degradation of formaldehyde and a preparation method thereof, mainly to solve the problems that the adhesion of the formaldehyde adsorption catalyst is not good enough and the degradation efficiency is low
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Embodiment 1
[0031] refer to figure 1 , an adsorption catalyst for in-situ degradation of formaldehyde and a preparation method thereof, comprising the following steps:
[0033] S2: primary mixing, stirring and mixing manganate, cerate, oxidizing agent and deionized water to obtain the first mixed liquid;
[0034] S3: secondary mixing, adding alkali solution to the first mixed solution for mixed reaction to obtain the second mixed solution;
[0035] S4: a reflux condensation reaction, and perform a reflux condensation reaction on the second mixed solution;
[0036] S5: Secondary reflux condensation reaction, adding TiO2 sol to the second mixed solution after one reflux condensation reaction;
[0037] S6: roasting, roasting the second solution to obtain a block formaldehyde adsorption catalyst;
[0038] S7: soaking, soaking the massive formaldehyde adsorption catalyst in ammonia water;
...
Embodiment 2
[0044] refer to figure 1 , an adsorption catalyst for in-situ degradation of formaldehyde and a preparation method thereof, comprising the following steps:
[0046] S2: primary mixing, stirring and mixing manganate, cerate, oxidizing agent and deionized water to obtain the first mixed liquid;
[0047] S3: secondary mixing, adding alkali solution to the first mixed solution for mixed reaction to obtain the second mixed solution;
[0048] S4: a reflux condensation reaction, and perform a reflux condensation reaction on the second mixed solution;
[0049] S5: Secondary reflux condensation reaction, adding TiO2 sol to the second mixed solution after one reflux condensation reaction;
[0050] S6: roasting, roasting the second solution to obtain a block formaldehyde adsorption catalyst;
[0051] S7: soaking, soaking the massive formaldehyde adsorption catalyst in ammonia water;
...
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Abstract
The invention relates to the technical field of formaldehyde production, and discloses an adsorption catalyst for in-situ degradation of formaldehyde and a preparation method thereof. The preparationmethod comprises the following steps of S1, preparing raw materials, manganate, cerate, an oxidizing agent, ammonia water, TiO2 sol and an alkaline solution, S2, primary mixing, and stirring and mixing manganate, cerate, the oxidizing agent and deionized water to obtain a first mixed solution, S3, secondary mixing,adding an alkali solution to the first mixed solution for mixing reaction to obtaina second mixed solution, S4, carrying out primary refluxcondensation reaction, namely carrying out refluxcondensation reaction on the second mixed solution, S5, carrying out secondary refluxcondensation reaction, namely adding TiO2 sol into the second mixed solution subjected to the primary reflux condensation reaction. The nitrogen element in the ammonia water can be combined with the blocky formaldehyde adsorption catalyst, so that the adhesive force of the formaldehyde adsorption catalyst can be improved, and the degradation efficiency of formaldehyde is further improved.
Description
technical field [0001] The invention relates to the technical field of formaldehyde production, in particular to an adsorption catalyst for in-situ degradation of formaldehyde and a preparation method thereof. Background technique [0002] Formaldehyde is one of the main pollutants in volatile organic pollutants, especially in the indoor environment. The harm of formaldehyde to the human body depends on its concentration. It irritates the mucous membranes of the eyes at low concentrations, and irritates the upper respiratory tract at slightly higher concentrations. Cause cough, chest tightness, headache and nausea, and cause rhinitis, pharyngitis, emphysema, lungcancer, and even death when the concentration is higher. It has been identified as a carcinogenic and teratogenic substance by the World Health Organization. The health problems of the future have increasingly become a new focus of public attention. [0003] At present, indoor formaldehyde decomposition technologie...
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