CN104984757A - Preparation method for fast formaldehyde scavenger - Google Patents
Preparation method for fast formaldehyde scavenger Download PDFInfo
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- CN104984757A CN104984757A CN201510460027.3A CN201510460027A CN104984757A CN 104984757 A CN104984757 A CN 104984757A CN 201510460027 A CN201510460027 A CN 201510460027A CN 104984757 A CN104984757 A CN 104984757A
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Abstract
The method provides a preparation method for a fast formaldehyde scavenger. The method comprises the steps of: performing direct dry roasting to prepare a cerium manganese compound; mixing the cerium manganese compound with a 10X molecular sieve and a silver nitrate solution; drying and roasting the mixture to make silver oxide be adsorbed in gaps of the 10X molecular sieve; and thoroughly mixing the cerium manganese compound and the 10X molecular sieve, thereby improving removal efficiency and removal speed of the formaldehyde. The preparation method provided by the invention is simple in process, high in industrialization potential and has great promotional value.
Description
Technical field
The present invention relates to a kind of preparation method of formaldehyde scavenger, particularly a kind of preparation method of quick removal agent of formaldehyde in indoor air.
Background technology
Modern architecture, indoor decoration and ornaments contact with the material containing formaldehyde day by day, cause the concentration of formaldehyde in room air to rise, seriously reduce the quality of room air.International cancer research institution of the World Health Organization (IARC) has issued No. 153 publication, and publication is pointed out: formaldehyde can cause the mankind carcinogenic.Research shows that formaldehyde is the material that a kind of toxicity is higher, and short term contact formaldehyde can stimulate eyes, nasal cavity and respiratory tract and cause allergic reaction; Long Term Contact low dosage formaldehyde can increase the possibility of leukaemia, nasopharyngeal carcinoma, breast cancer and death.For this reason, 2005, formaldehyde in indoor air sanitary standard (maximum permissible concentration) was 0.08mg/m by China
3.It is reported, after finishing in 1-6 month, in room, formaldehyde rate reaches 80%, close to 100% in meeting room and office; Fit up after 3 years, exceeding standard rate all still reaches more than 50%.According to investigations, the content overproof of Chinese most families formaldehyde in indoor air, and also modern about has the time of 80-90% to spend in indoor.Therefore, the formaldehyde removed in car or in room air is extremely urgent.
The method of removal formaldehyde in air pollutant conventional at present comprises: absorption method, photocatalytic method, plasma etc.Absorption method, no matter physical absorption or chemisorbed, when adsorbent reaches capacity, adsorbent will lose efficacy or need regeneration; In photocatalytic method, conventional catalyst is TiO
2, its formaldehyde removal efficiency lower in real-world conditions limits light-catalysed extensive use; Plasma is the new method of process formaldehyde in air, have certain development prospect, but the generation of the accessory substances such as ozone, carbon monoxide and nitrogen oxide is the bottleneck of this technology extensive use.In recent years, catalytic oxidation removes the focus that formaldehyde in indoor air is research, because catalyst does not need extra light or electric energy can be just harmless carbon dioxide and water by the formaldehyde conversion in air, its advantage is: process formaldehyde efficiency is high, do not have secondary pollution and do not adsorb the problems such as saturated, the formaldehyde particularly processing low concentration is very effective.
US Patent No. 5,585, a kind of catalytic oxidation of 083 invention removes the method for formaldehyde, inventor using the platinum load of 12wt% on tin oxide as catalyst, with the oxygen in air for oxidant, the catalytic oxidation of PARA FORMALDEHYDE PRILLS(91,95) is removed a good effect.The advantage of the method does not have the consumption of additional energy source just can reach the effect of low-temperature catalyzed degradation of formaldehyde in reaction.Rare earth oxide or the complex rare-earth oxidate containing valuable metal of Chinese patent CN 1698932A gold-supported are catalyst, when the content of gold is 3wt.%, also can obtain the effect of good catalytic degradation formaldehyde at the temperature of about 100 DEG C.But two patents all employ the expensive noble metal such as platinum and gold, and catalyst price is very expensive.The silver-carrying nano manganese dioxide-catalyst that Chinese patent CN 102198404 B provides, with the manganese dioxide molecular sieve of silver-colored carried with doped for activating component, this catalyst can catalyze oxidation of formaldehyde react at low temperatures, by formaldehyde under cryogenic complete oxidation be carbon dioxide and water, thus remove formaldehyde.This patented method technique is more complicated, and industrialization difficulty is larger.
Summary of the invention
The object of this invention is to provide a kind of preparation method of formaldehyde quick removal agent.
To achieve these goals, the preparation method of formaldehyde quick removal agent provided by the invention, comprises the following steps:
(1) ammonium ceric nitrate and manganese carbonate 1: 1.7-2.5 are mixed in mass ratio, be placed in Muffle furnace, by room temperature gradient increased temperature to 360 DEG C ~ 440 DEG C, 360 DEG C ~ 440 DEG C roastings 5 ~ 6 hours, naturally cool to room temperature, obtain manganese-cerium composite oxide;
(2) manganese-cerium composite oxide of preparation in (1) 1: 0.1 ~ 0.5: 0.5 ~ 2.5 is mixed in mass ratio with 10X molecular sieve and silver nitrate aqueous solution, be placed in Muffle furnace, by room temperature gradient increased temperature to 500 DEG C, 500 DEG C of roastings 0.5 ~ 1 hour, naturally cool to room temperature, obtain formaldehyde quick removal agent.
The heating gradient of the gradient increased temperature in step (1) is 100 DEG C/h.
The heating gradient of the gradient increased temperature in step (2) is 50 DEG C/h.
The mass percentage concentration of the silver nitrate aqueous solution in step (2) is 1% ~ 3%.
Advantage of the present invention: directly manganese cerium compound is prepared in dry method roasting, preparation technology is simple, manganese cerium compound is mixed post-drying with 10X molecular sieve and silver nitrate aqueous solution, roasting makes silver oxide be adsorbed in the space of 10X molecular sieve, and manganese cerium compound is fully mixed with 10X molecular sieve contact, and then improve elimination efficiency and the removing speed of formaldehyde.According to JC/T1074-2008 method, test its formaldehyde removing rate, after 10 minutes, formaldehyde removing rate can reach 93%, and after 30 minutes, formaldehyde removing rate can reach 99.5%.And formaldehyde scavenger prepared by this method, plasticity is strong, can be made into the particle of different-grain diameter or the tablet of different-thickness.Preparation method of the present invention, technique is simple, industrialization potential is large, great popularization.
Detailed description of the invention
Do to retouch elaboration in detail further to the present invention below in conjunction with embodiment:
The preparation method of formaldehyde quick removal agent, comprises the following steps:
(1) ammonium ceric nitrate and manganese carbonate 1: 1.7-2.5 are mixed in mass ratio, be placed in Muffle furnace, by room temperature gradient increased temperature to 360 DEG C ~ 440 DEG C, 360 DEG C ~ 440 DEG C roastings 5 ~ 6 hours, naturally cool to room temperature, obtain manganese-cerium composite oxide;
(2) manganese-cerium composite oxide of preparation in (1) 1: 0.1 ~ 0.5: 0.5 ~ 2.5 is mixed in mass ratio with 10X molecular sieve and silver nitrate aqueous solution, be placed in Muffle furnace, by room temperature gradient increased temperature to 500 DEG C, 500 DEG C of roastings 0.5 ~ 1 hour, naturally cool to room temperature, obtain formaldehyde quick removal agent.
The heating gradient of the gradient increased temperature in step (1) is 100 DEG C/h.
The heating gradient of the gradient increased temperature in step (2) is 50 DEG C/h.
The mass percentage concentration of the silver nitrate aqueous solution in step (2) is 1% ~ 3%.
Embodiment 1
10 grams of ammonium ceric nitrates and 17 grams of manganese carbonates are mixed, be placed in Muffle furnace, by room temperature gradient increased temperature to 440 DEG C, heating gradient is 100 DEG C/h, 440 DEG C of roastings 5 hours, naturally cools to room temperature, obtains manganese-cerium composite oxide 14.6 grams;
The silver nitrate aqueous solution being 1% by 10 grams of manganese-cerium composite oxides of preparation in (1) and 1 gram of 10X molecular sieve and 25 gram mass percentage concentrations mixes, be placed in Muffle furnace, by room temperature gradient increased temperature to 500 DEG C, heating gradient is 50 DEG C/h, 500 DEG C of roastings 0.5 hour, naturally cool to room temperature, obtain 10.5 grams of formaldehyde quick removal agents.
Embodiment 2
10 grams of ammonium ceric nitrates and 20 grams of manganese carbonates are mixed, be placed in Muffle furnace, by room temperature gradient increased temperature to 380 DEG C, heating gradient is 100 DEG C/h, 380 DEG C of roastings 5.5 hours, naturally cools to room temperature, obtains manganese-cerium composite oxide 16.1 grams;
The silver nitrate aqueous solution being 3% by 10 grams of manganese-cerium composite oxides of preparation in (1) and 3 grams of 10X molecular sieves and 5 gram mass percentage concentrations mixes, be placed in Muffle furnace, by room temperature gradient increased temperature to 500 DEG C, heating gradient is 50 DEG C/h, 500 DEG C of roastings 1 hour, naturally cool to room temperature, obtain 13 grams of formaldehyde quick removal agents.
Embodiment 3
100 grams of ammonium ceric nitrates and 250 grams of manganese carbonates are mixed, be placed in Muffle furnace, by room temperature gradient increased temperature to 360 DEG C, heating gradient is 100 DEG C/h, 380 DEG C of roastings 6 hours, naturally cools to room temperature, obtains manganese-cerium composite oxide 181 grams;
The silver nitrate aqueous solution being 1.5% by 100 grams of manganese-cerium composite oxides of preparation in (1) and 50 grams of 10X molecular sieves and 200 gram mass percentage concentrations mixes, be placed in Muffle furnace, by room temperature gradient increased temperature to 500 DEG C, heating gradient is 50 DEG C/h, 500 DEG C of roastings 1 hour, naturally cool to room temperature, obtain 152 grams of formaldehyde quick removal agents.
Claims (4)
1. a preparation method for formaldehyde quick removal agent, is characterized in that, comprises the following steps:
(1) ammonium ceric nitrate and manganese carbonate 1: 1.7 ~ 2.5 are mixed in mass ratio, be placed in Muffle furnace, by room temperature gradient increased temperature to 360 DEG C ~ 440 DEG C, 360 DEG C ~ 440 DEG C roastings 5 ~ 6 hours, naturally cool to room temperature, obtain manganese-cerium composite oxide;
(2) manganese-cerium composite oxide of preparation in (1) 1: 0.1 ~ 0.5: 0.5 ~ 2.5 is mixed in mass ratio with 10X molecular sieve and silver nitrate aqueous solution, be placed in Muffle furnace, by room temperature gradient increased temperature to 500 DEG C, 500 DEG C of roastings 0.5 ~ 1 hour, naturally cool to room temperature, obtain formaldehyde quick removal agent.
2. preparation method as claimed in claim 1, is characterized in that: the heating gradient of the gradient increased temperature in step (1) is 100 DEG C/h.
3. preparation method as claimed in claim 1, is characterized in that: the heating gradient of the gradient increased temperature in step (2) is 50 DEG C/h.
4. preparation method as claimed in claim 1, is characterized in that: the mass percentage concentration of the silver nitrate aqueous solution in step (2) is 1% ~ 3%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665000A (en) * | 2016-01-11 | 2016-06-15 | 盘锦盛世康环保科技有限公司 | Room temperature formaldehyde catalytic material and preparation method thereof |
| CN107349761A (en) * | 2017-08-31 | 2017-11-17 | 无锡风正科技有限公司 | A kind of long-acting formaldehyde catching material and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| JP2000079157A (en) * | 1998-07-02 | 2000-03-21 | Hitachi Chem Co Ltd | Method for decomposing/removing formaldehyde in air |
| CN102886273A (en) * | 2011-07-20 | 2013-01-23 | 上海纳米技术及应用国家工程研究中心有限公司 | Carbon monoxide normal-temperature oxidation nano-silver catalyst and preparation method thereof |
| CN102921407A (en) * | 2012-03-26 | 2013-02-13 | 湖北恒昊科技有限公司 | Manganese-cerium composite oxide, preparation method and applications thereof |
| CN103127952A (en) * | 2011-12-01 | 2013-06-05 | 上海纳米技术及应用国家工程研究中心有限公司 | Supported nano-silver catalyst capable of eliminating formaldehyde at room temperature and preparation method thereof |
| CN104084191A (en) * | 2014-07-21 | 2014-10-08 | 贝谷科技股份有限公司 | Manganese-cerium solid solution monolithic catalyst for removing formaldehyde at room temperature and preparation method thereof |
-
2015
- 2015-08-03 CN CN201510460027.3A patent/CN104984757B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000079157A (en) * | 1998-07-02 | 2000-03-21 | Hitachi Chem Co Ltd | Method for decomposing/removing formaldehyde in air |
| CN102886273A (en) * | 2011-07-20 | 2013-01-23 | 上海纳米技术及应用国家工程研究中心有限公司 | Carbon monoxide normal-temperature oxidation nano-silver catalyst and preparation method thereof |
| CN103127952A (en) * | 2011-12-01 | 2013-06-05 | 上海纳米技术及应用国家工程研究中心有限公司 | Supported nano-silver catalyst capable of eliminating formaldehyde at room temperature and preparation method thereof |
| CN102921407A (en) * | 2012-03-26 | 2013-02-13 | 湖北恒昊科技有限公司 | Manganese-cerium composite oxide, preparation method and applications thereof |
| CN104084191A (en) * | 2014-07-21 | 2014-10-08 | 贝谷科技股份有限公司 | Manganese-cerium solid solution monolithic catalyst for removing formaldehyde at room temperature and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665000A (en) * | 2016-01-11 | 2016-06-15 | 盘锦盛世康环保科技有限公司 | Room temperature formaldehyde catalytic material and preparation method thereof |
| CN107349761A (en) * | 2017-08-31 | 2017-11-17 | 无锡风正科技有限公司 | A kind of long-acting formaldehyde catching material and preparation method thereof |
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Effective date of registration: 20210309 Address after: Room B404, building 20 (128 Xiuyue Street), innovation and entrepreneurship Plaza, science and technology innovation city, Harbin high tech Industrial Development Zone, 150000, Heilongjiang Province Patentee after: Heilongjiang Tianyun Technology Co.,Ltd. Address before: 150090 No.7, 1st floor, building a, Xinheng modern city garden, Nangang District, economic development zone, Harbin City, Heilongjiang Province Patentee before: HARBIN TIANYUN WEIYE SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |