CN101658785A - Preparation method of porous silicate powder capable of adsorbing indoor harmful gases - Google Patents
Preparation method of porous silicate powder capable of adsorbing indoor harmful gases Download PDFInfo
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- CN101658785A CN101658785A CN200910044302A CN200910044302A CN101658785A CN 101658785 A CN101658785 A CN 101658785A CN 200910044302 A CN200910044302 A CN 200910044302A CN 200910044302 A CN200910044302 A CN 200910044302A CN 101658785 A CN101658785 A CN 101658785A
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Abstract
The invention relates to a preparation method of porous silicate powder capable of adsorbing indoor harmful gases. The preparation method is characterized by comprising the following steps: weighing and mixing one or a plurality of natural silicate minerals, such as zeolite, diatomite, attapulgite, vermiculite, perlite, and the like, then adding a certain quantity of aqueous alkali, evenly mixingand then transferring into a reaction kettle, heating till the pressure in the kettle reaches 0.8-1.2MPa, maintaining the pressure for 0.5-1.0h, then suddenly releasing the pressure, and taking the materials out to obtain the finished product. The obtained product has large specific surface area and favorable adsorption capacity; and building coating added with the product can be ensured to have the function of adsorbing indoor harmful gases.
Description
Technical field
The present invention relates to a kind of preparation method of porous silicate powder of adsorbable indoor harmful gas.
Technical background
Natural silicate raw mineral materials such as zeolite, diatomite, attapulgite, vermiculite, perlite sources is abundant, cheap, and has characteristics such as physisorption, ion exchange, chemical property be stable usually because of its some special structures.But because pore size heterogeneity, specific area in its natural minerals are little, adsorption capacity is poor, has limited the quality and the scope of application of its product, must carry out modification and reaming.
These natural mineral modified methods are mainly contained physical activation method and chemical activation method, " experimental study of ammonia nitrogen in Zeolite modifying and the removal water thereof ", environmental project journal, 2009,3 (4): 635-638; " Purification of Diatomite Progress in Modification ", Chinese non-metallic mineral industry guide, 2007, (6): 9-13; " attapulgite pickling purification Technology's Study ", nonmetallic ore, 2009,23 (2): 43-47; " high expansion rate vermiculite new preparation process research ", 2008,3:13-17; " perlitic surface modification and Study on adsorption properties ", 2008,21 (3): documents such as 566-569 were all done certain report to this.But these method of modifying exist modifying process and easily introduce corrosive substance, complex manufacturing, technological parameters such as acid and be difficult to deficiencies such as control.The present invention comprehensively adopts physical activation method and chemical activation method, provides a kind of reference area big, active high, low, the simple porous silicate production method of technology of production cost.
Summary of the invention
The invention provides a kind of preparation method of porous silicate powder of adsorbable indoor harmful gas, prepared porous silicate powder has than bigger serface and strong adsorption capacity.
The porous silicate powder preparation method of described adsorbable indoor harmful gas, it is characterized in that in the natural silicate mineral such as zeolite, diatomite, attapulgite, vermiculite, perlite one or more, adding concentration is 10% ~ 20% alkaline solution, leave standstill 18 ~ 24h after the mixing, be transferred to then in the reactor, loadings is 80% of a reactor volume, being warming up to the still internal pressure is 0.8 ~ 1.2MPa, behind pressurize 0.5 ~ 1.0h, release suddenly, taking-up gets final product.
The porous silicate powder preparation method of described adsorbable indoor harmful gas, used aqueous slkali comprises the aqueous solution of one or more mixtures of materials such as NaOH, potassium hydroxide, sodium carbonate, sodium acid carbonate, potash, saleratus, and the addition of aqueous slkali accounts for 5%～15% of silicate mineral quality.
Among the preparation method who addresses of the present invention: raw material sources are extensive, and production technology is simple, and are with low cost, are easy to large-scale industrial production; Properties of product are good, and specific area is big, have stronger absorption property and permeability, can be used as inorganic adsorbent, adds in the inner wall of building latex paint, gives the function of adsorbing indoor harmful gases to building coating.
Embodiment
Difference weighing vermiculite 1kg, diatomite 2kg, adding concentration is 15% soda ash solution 0.3kg, after mixing 0.5h, leave standstill 24h, being transferred to volume then is 4 liters, the interior and intensification of the manometric reactor of band digital display type, when treating that the still internal pressure is increased to 0.9MPa, stop to heat up and pressurize release suddenly and taking-up behind the 1.2h.
This product as filler, is added in the inner wall of building latex paint and goes, and the adsorbable indoor harmful gas of the coating of preparation detects through the disease prevention and control center, Hunan Province, uses the prepared inner wall of building latex paint 2.0kg of this product, and it is at 20m
2Experiment between in 1h and 12h Degradation Formaldehyde rate in the air is respectively 4.35% and 48.18%.
Claims (2)
1, a kind of preparation method of porous silicate powder of adsorbable indoor harmful gas, it is characterized in that in the natural silicate mineral such as zeolite, diatomite, attapulgite, vermiculite, perlite one or more, adding concentration is 10%～20% aqueous slkali, leave standstill 18～24h after the mixing, be transferred to then in the reactor, addition is 80% of a reactor volume, being warming up to the still internal pressure is 0.8～1.2MPa, after maintaining 0.5～1.0h, release suddenly, taking-up gets final product.
2, the described aqueous slkali of claim 1 comprises the solution of materials such as NaOH, potassium hydroxide, sodium carbonate, sodium acid carbonate, potash, saleratus, and its addition is 5%～15% of a natural silicate mineral quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910044302A CN101658785A (en) | 2009-09-08 | 2009-09-08 | Preparation method of porous silicate powder capable of adsorbing indoor harmful gases |
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| CN200910044302A CN101658785A (en) | 2009-09-08 | 2009-09-08 | Preparation method of porous silicate powder capable of adsorbing indoor harmful gases |
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| CN101658785A true CN101658785A (en) | 2010-03-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101940909A (en) * | 2010-05-04 | 2011-01-12 | 中国矿业大学(北京) | Efficient ecotype inorganic formaldehyde adsorbing material and preparation method thereof |
| CN102019166A (en) * | 2010-12-11 | 2011-04-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for preparing modified attapulgite clay adsorbing material |
| CN106512960A (en) * | 2016-12-05 | 2017-03-22 | 郑州丽福爱生物技术有限公司 | Modified environment-friendly material as well as preparing method and application thereof |
| CN107684896A (en) * | 2016-08-03 | 2018-02-13 | 淮阴工学院 | It is prepared by the recessed soil of loose structure |
| CN108219203A (en) * | 2018-01-17 | 2018-06-29 | 江林（贵州）高科发展股份有限公司 | A kind of modified porous material distributed for reducing aldehyde ketone in plastics and application thereof |
| CN108342020A (en) * | 2018-01-17 | 2018-07-31 | 江林（贵州）高科发展股份有限公司 | Suitable for polypropylene material for manufacturing automotive upholstery and preparation method thereof and purposes |
-
2009
- 2009-09-08 CN CN200910044302A patent/CN101658785A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101940909A (en) * | 2010-05-04 | 2011-01-12 | 中国矿业大学(北京) | Efficient ecotype inorganic formaldehyde adsorbing material and preparation method thereof |
| CN101940909B (en) * | 2010-05-04 | 2012-10-24 | 中国矿业大学(北京) | Efficient ecotype inorganic formaldehyde adsorbing material and preparation method thereof |
| CN102019166A (en) * | 2010-12-11 | 2011-04-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for preparing modified attapulgite clay adsorbing material |
| CN107684896A (en) * | 2016-08-03 | 2018-02-13 | 淮阴工学院 | It is prepared by the recessed soil of loose structure |
| CN106512960A (en) * | 2016-12-05 | 2017-03-22 | 郑州丽福爱生物技术有限公司 | Modified environment-friendly material as well as preparing method and application thereof |
| CN108219203A (en) * | 2018-01-17 | 2018-06-29 | 江林（贵州）高科发展股份有限公司 | A kind of modified porous material distributed for reducing aldehyde ketone in plastics and application thereof |
| CN108342020A (en) * | 2018-01-17 | 2018-07-31 | 江林（贵州）高科发展股份有限公司 | Suitable for polypropylene material for manufacturing automotive upholstery and preparation method thereof and purposes |
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Open date: 20100303 |