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Excessive concentration of formaldehyde in indoor air is relatively common, the health of the residents cause serious harm . Therefore, to study the clear material , control indoor air pollution is important. In this thesis, screened from the matrix material , the matrix material modification , room temperature catalyst evaluation , the practical application of other aspects of the research . Tested activated carbon, silica gel chromatography , dry silica gel , activated carbon fiber , 13X molecular sieve adsorption resin matrix material six kinds of formaldehyde adsorption capacity . Where the volume of dried gel highest adsorption capacity (0.455mg/ml), activated carbon adsorption capacity of the highest quality fibers (1.15 mg / g). Select more than ten kinds of substances on nine kinds of matrix material was modified . Among them, potassium permanganate modification on activated carbon, silica gel and 13X molecular sieve chromatography of formaldehyde removal performance improved significantly. Volume of potassium permanganate modified 13X molecular sieve to remove formaldehyde reached 2.88mg/ml. 5 kinds of nitrogen-containing polymer-modified substrate material, due to clogging of the anion exchange resin, cation exchange resins, activated carbon, silica gel chromatography, porous matrix material , resulting in the removal of formaldehyde capacity decreased . Adsorption resin has a relatively large diameter and developed porosity volume of nitrogen-containing polymer is modified to remove formaldehyde is greatly increased , to 3.34mg/ml. Studied CXY-1 -type catalyst at room temperature to remove formaldehyde and catalyst regeneration , regeneration of catalyst performance . Experiments show that , CXY-1 -type catalyst at room temperature has a very good formaldehyde removal performance , breakthrough time is 1024h, dynamic removal capacity of 19.8mg/ml. CXY-1 -type catalyst was washed with water at room temperature , thermal regeneration after its removal of formaldehyde catalyst performance restored to the original 97% . Analog purification experiments show that the filter structure had a significant effect on the rate of purification . Drag relatively small and a large surface area carbon honeycomb modified by potassium permanganate , formaldehyde purification fast, the lowest concentration is low , reaching 0.02mg/m3, as a home air purifier filters have excellent performance.
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