CN101269345A - Oxidation treatment method for carrier carbon surface - Google Patents
Oxidation treatment method for carrier carbon surface Download PDFInfo
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- CN101269345A CN101269345A CNA2008100312563A CN200810031256A CN101269345A CN 101269345 A CN101269345 A CN 101269345A CN A2008100312563 A CNA2008100312563 A CN A2008100312563A CN 200810031256 A CN200810031256 A CN 200810031256A CN 101269345 A CN101269345 A CN 101269345A
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Abstract
The invention relates to a method of oxidation process on the surface of a carrier carbon, including the following steps that: powdered activated carbon is mixed with nitric acid solution with a concentration ranging from 2 to 12 percent by the weight ratio of 1:3 to 30 to make a powdered activated carbon suspension which is processed by ultrasonic radiation for 20-120min at the temperature between 30 DEG C and 60 DEG C, wherein, the ultrasonic energy is controlled between 1 and 10W/cm<2>. The suspension is filtered and the residue is cleaned by water until the pH value of the washing water ranges from 6.5 to 7. After drying, under the protection of nitrogen, the residue is processed at the high temperature between 800 DEG C and 1100 DEG C for 5 to 15min by microwave with the frequency of 2450 MHz and the power ranging from 200W to 850W. The method provided by the invention can remove most oxygen-functional groups on the surface of the activated carbon, improve the alkalinity and the specific surface area on the surface of the activated carbon and reduce the ash content of the activated carbon. Besides, the method provided by the invention has the advantages of short processing time, high processing efficiency, environmental protection and energy conservation.
Description
Affiliated technical field
The present invention relates to a kind of oxidation treatment method of catalyst carrier carbon surface.
Technical background
Active carbon is called the catalyst carrier charcoal during as the carrier of catalyst, because the surface of merchandise active carbon may exist sodium Na, potassium K, silicon Si, aluminium Al, zinc Zn, phosphorus P, nitrogen N, iron Fe, sulphur S, oxygen O, calcium Ca and other elements, the existence of these elements can influence the hardness and the service life of catalyst carrier, may quicken side reaction in addition, therefore the performance to catalyst produces adverse influence.So active carbon reaches the optimum performance of catalyst except the ratio of selecting balance macropore, mesopore and micropore during as catalyst carrier, also to carry out modification, make it reach surface functional group and the flourishing pore structure desirable carried noble metal to activated carbon surface.
In the conventional art, the oxidation treatment method of carrier carbon surface is as follows: with commodity Powdered Activated Carbon, weight concentration is that the salpeter solution of 20-40% is 1 by weight: the ratio batching of 4-1 5 makes the suspension of Powdered Activated Carbon, handle 120-300min under 30-90 ℃ condition, filtration washing is to neutral.Its specific area of carrier charcoal, methylenum careuleum adsorptive value that conventional process obtains are little, and the noble metal active component decentralization is low, oxygen-containing functional group, content of ashes height, and the noble metal active component adsorption rate is the highest can only to reach 95%.
Summary of the invention
The object of the present invention is to provide a kind of oxidation treatment method of catalyst carrier carbon surface.Carrier charcoal specific area, the methylenum careuleum adsorptive value handled by this method are big, noble metal active component decentralization height, and oxygen-containing functional group, content of ashes are low, noble metal active component adsorption rate height.
In order to achieve the above object, technical scheme of the present invention is following design:
A kind of oxidation treatment method of carrier carbon surface is characterized in that:
May further comprise the steps
(1) acid treatment
With Powdered Activated Carbon, weight concentration be the salpeter solution of 2-12% in 1: the ratio of 3-10 weight ratio is mixed, handled 1-2 hour down at temperature 30-50 ℃,
(2) filtration washing
The Powdered Activated Carbon suspension of handling well in the step (1) is filtered, washes filter residue with water, to the washings pH value be 6.5-7,
(3) ultrasonic radiation is handled
The Powdered Activated Carbon that step (2) is made, water are by 1: the weight ratio of 2-12 is mixed with suspension, described suspension is carried out ultrasonic radiation handle 20-120min under 30-60 ℃ temperature conditions, and wherein, hyperacoustic energy is controlled at 1-10W/cm
2Between,
(4) microwave treatment
After the Powdered Activated Carbon drying that gained suspension filtered in the step (3) is made, in nitrogen N
2Protection is that 2450MHZ, power are that the microwave of 200-850W is handled 5-15min and obtained the modified support charcoal under 800-1100 ℃ of hot conditions with frequency down.
The present invention adopts new technology ultrasonic and that microwave is handled carrier carbon surface, this method can be removed most of oxygen-containing functional group of activated carbon surface, obviously improve the alkalescence and the specific area of activated carbon surface, reduce the ash content of coal of active carbon, and the processing time is short, the treatment effeciency height, environmental protection and energy saving.On the carrier charcoal performance that carrier charcoal that the inventive method processing obtains and conventional process obtain bigger improvement is arranged.See the following form
Modified technique of the present invention and the contrast of traditional modified technique
| Technology category | Specific area | The methylenum careuleum adsorptive value | The noble metal decentralization | Oxygen-containing functional group | Ash % | PH | The noble metal adsorption rate |
| Technology of the present invention | 1260m 2/g | 24ml/g | 41％ | 2.36％ | 0.51 | 10.5 | 99.5％ |
| Traditional handicraft | 980m 2/g | 16ml/g | 29.5％ | 6.72％ | 2.9 | 6.5 | 95％ |
As can be known from the above table, the carrier charcoal specific area that carrier charcoal that the inventive method processing obtains and conventional process obtain increases by 26%, and the methylenum careuleum adsorptive value increases by 50%, and oxygen-containing functional group reduces by 4.36%, ash content reduces by 2.49, and the noble metal utilization rate improves 4.5% than conventional method.
Describe the present invention in detail below in conjunction with the specific embodiment
The specific embodiment one
A kind of oxidation treatment method of carrier carbon surface may further comprise the steps
(1) acid treatment
With Powdered Activated Carbon, weight concentration is the ratio mixing of the salpeter solution of 2-12% in 1: 3 weight ratio, handled 1-2 hour down at temperature 30-50 ℃,
(2) filtration washing
The Powdered Activated Carbon suspension of handling well in the step (1) is filtered, washes filter residue with water, to the washings pH value be 6.5-7,
(3) ultrasonic radiation is handled
Powdered Activated Carbon, water that step (2) is made are mixed with suspension by 1: 12 weight ratio, described suspension is carried out ultrasonic radiation handle 20-120min under 30-60 ℃ temperature conditions, and wherein, hyperacoustic energy is controlled at 1-10W/cm
2Between,
(4) microwave treatment
After the Powdered Activated Carbon drying that gained suspension filtered in the step (3) is made, in nitrogen N
2Protection is that 2450MHZ, power are that the microwave of 200-850W is handled 5-15min and obtained the modified support charcoal under 800-1100 ℃ of hot conditions with frequency down.
The specific embodiment two
A kind of oxidation treatment method of carrier carbon surface may further comprise the steps
(1) acid treatment
With Powdered Activated Carbon, weight concentration is the ratio mixing of the salpeter solution of 2-12% in 1: 7 weight ratio, handled 1-2 hour down at temperature 30-50 ℃,
(2) filtration washing
The Powdered Activated Carbon suspension of handling well in the step (1) is filtered, washes filter residue with water, to the washings pH value be 6.5-7,
(3) ultrasonic radiation is handled
Powdered Activated Carbon, water that step (2) is made are mixed with suspension by 1: 7 weight ratio, described suspension is carried out ultrasonic radiation handle 20-120min under 30-60 ℃ temperature conditions, and wherein, hyperacoustic energy is controlled at 1-10W/cm
2Between,
(4) microwave treatment
After the Powdered Activated Carbon drying that gained suspension filtered in the step (3) is made, in nitrogen N
2Protection is that 2450MHZ, power are that the microwave of 200-850W is handled 5-15min and obtained the modified support charcoal under 800-1100 ℃ of hot conditions with frequency down.
The specific embodiment three
A kind of oxidation treatment method of carrier carbon surface may further comprise the steps
(1) acid treatment
With Powdered Activated Carbon, weight concentration is the ratio mixing of the salpeter solution of 2-12% in 1: 10 weight ratio, handled 1-2 hour down at temperature 30-50 ℃,
(2) filtration washing
The Powdered Activated Carbon suspension of handling well in the step (1) is filtered, washes filter residue with water, to the washings pH value be 6.5-7,
(3) ultrasonic radiation is handled
Powdered Activated Carbon, water that step (2) is made are mixed with suspension by 1: 4 weight ratio, described suspension is carried out ultrasonic radiation handle 20-120min under 30-60 ℃ temperature conditions, and wherein, hyperacoustic energy is controlled at 1-10W/cm
2Between,
(4) microwave treatment
After the Powdered Activated Carbon drying that gained suspension filtered in the step (3) is made, in nitrogen N
2Protection is that 2450MHZ, power are that the microwave of 200-850W is handled 5-15min and obtained the modified support charcoal under 800-1100 ℃ of hot conditions with frequency down.
The specific embodiment four
A kind of oxidation treatment method of carrier carbon surface may further comprise the steps
(1) acid treatment
With Powdered Activated Carbon, weight concentration is the ratio mixing of the salpeter solution of 2-12% in 1: 6 weight ratio, handled 1-2 hour down at temperature 30-50 ℃,
(2) filtration washing
The Powdered Activated Carbon suspension of handling well in the step (1) is filtered, washes filter residue with water, to the washings pH value be 6.5-7,
(3) ultrasonic radiation is handled
Powdered Activated Carbon, water that step (2) is made are mixed with suspension by 1: 10 weight ratio, described suspension is carried out ultrasonic radiation handle 20-120min under 30-60 ℃ temperature conditions, and wherein, hyperacoustic energy is controlled at 1-10W/cm
2Between,
(4) microwave treatment
After the Powdered Activated Carbon drying that gained suspension filtered in the step (3) is made, in nitrogen N
2Protection is that 2450MHZ, power are that the microwave of 200-850W is handled 5-15min and obtained the modified support charcoal under 800-1100 ℃ of hot conditions with frequency down.
The specific embodiment five
A kind of oxidation treatment method of carrier carbon surface may further comprise the steps
(1) acid treatment
With Powdered Activated Carbon, weight concentration is the ratio mixing of the salpeter solution of 2-12% in 1: 9 weight ratio, handled 1-2 hour down at temperature 30-50 ℃,
(2) filtration washing
The Powdered Activated Carbon suspension of handling well in the step (1) is filtered, washes filter residue with water, to the washings pH value be 6.5-7,
(3) ultrasonic radiation is handled
Powdered Activated Carbon, water that step (2) is made are mixed with suspension by 1: 2 weight ratio, described suspension is carried out ultrasonic radiation handle 20-120min under 30-60 ℃ temperature conditions, and wherein, hyperacoustic energy is controlled at 1-10W/cm
2Between,
(4) microwave treatment
After the Powdered Activated Carbon drying that gained suspension filtered in the step (3) is made, in nitrogen N
2Protection is that 2450MHZ, power are that the microwave of 200-850W is handled 5-15min and obtained the modified support charcoal under 800-1100 ℃ of hot conditions with frequency down.
Claims (1)
- A kind of oxidation treatment method of carrier carbon surface is characterized in that:May further comprise the steps(1) acid treatmentWith Powdered Activated Carbon, weight concentration be the salpeter solution of 2-12% in 1: the ratio of 3-10 weight ratio is mixed, handled 1-2 hour down at temperature 30-50 ℃,(2) filtration washingThe Powdered Activated Carbon suspension of handling well in the step (1) is filtered, washes filter residue with water, to the washings pH value be 6.5-7,(3) ultrasonic radiation is handledThe Powdered Activated Carbon that step (2) is made, water are by 1: the weight ratio of 2-12 is mixed with suspension, described suspension is carried out ultrasonic radiation handle 20-120min under 30-60 ℃ temperature conditions, and wherein, hyperacoustic energy is controlled at 1-10W/cm 2Between,(4) microwave treatmentAfter the Powdered Activated Carbon drying that gained suspension filtered in the step (3) is made, in nitrogen N 2Protection is that 2450MHZ, power are that the microwave of 200-850W is handled 5-15min and obtained the modified support charcoal under 800-1100 ℃ of hot conditions with frequency down.
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| CNA2008100312563A CN101269345A (en) | 2008-05-08 | 2008-05-08 | Oxidation treatment method for carrier carbon surface |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811016A (en) * | 2010-04-22 | 2010-08-25 | 浙江大学 | Method for preparing modified active carbon for hydrogen iodide catalytic decomposition through microwave treatment |
| CN101559989B (en) * | 2009-05-15 | 2011-04-20 | 黄樟焱 | Method for preparing powdered water treatment material used together with microporous ceramics |
| CN102527359A (en) * | 2012-01-18 | 2012-07-04 | 遵义医学院 | Method for modifying activated carbon for blood perfusion |
| CN104549238A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Catalyst for hydrorefining crude terephthalic acid and preparation method of catalyst |
| CN104707566A (en) * | 2015-02-17 | 2015-06-17 | 中国海洋大学 | Charcoal sphere as well as preparation method and application thereof |
| CN104707567A (en) * | 2015-04-08 | 2015-06-17 | 东南大学 | Preparation method of microwave nitric acid modified activated carbon for removing lead ions from water and application of microwave nitric acid modified activated carbon |
| CN104790262A (en) * | 2015-04-28 | 2015-07-22 | 杭州特种纸业有限公司 | Activated carbon filter paper, and preparation method and application thereof |
| CN105085138A (en) * | 2014-05-16 | 2015-11-25 | 上海星可高纯溶剂有限公司 | Purification method of high-purity organic solvent n-hexane |
| CN105233790A (en) * | 2015-09-30 | 2016-01-13 | 江苏通瑞环保科技发展有限公司 | Preparation method of modified active carbon |
| CN105883799A (en) * | 2016-04-25 | 2016-08-24 | 贵州安凯达实业股份有限公司 | Method for improving activity of activated carbon |
| CN105905897A (en) * | 2015-07-01 | 2016-08-31 | 洛阳名力科技开发有限公司 | Preparation method of active carbon for waste water treatment |
| CN107936775A (en) * | 2017-12-22 | 2018-04-20 | 枞阳县三金颜料有限责任公司 | A kind of preparation method of heat-resistant, wear-resistant ceramic resin coating |
| CN109455716A (en) * | 2018-10-23 | 2019-03-12 | 中国科学院山西煤炭化学研究所 | A kind of preparation method of the super capacitor active carbon with ultra low surface oxygen-containing functional group |
| WO2019109337A1 (en) * | 2017-12-08 | 2019-06-13 | 南京林业大学 | Graphite-like microcrystal carbon nanomaterial, preparation method therefor and use thereof |
| CN110624501A (en) * | 2019-08-28 | 2019-12-31 | 江苏中科睿赛污染控制工程有限公司 | Adsorbent for strengthening radon removal and adsorption purification device |
-
2008
- 2008-05-08 CN CNA2008100312563A patent/CN101269345A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559989B (en) * | 2009-05-15 | 2011-04-20 | 黄樟焱 | Method for preparing powdered water treatment material used together with microporous ceramics |
| CN101811016A (en) * | 2010-04-22 | 2010-08-25 | 浙江大学 | Method for preparing modified active carbon for hydrogen iodide catalytic decomposition through microwave treatment |
| CN102527359A (en) * | 2012-01-18 | 2012-07-04 | 遵义医学院 | Method for modifying activated carbon for blood perfusion |
| CN104549238A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Catalyst for hydrorefining crude terephthalic acid and preparation method of catalyst |
| CN104549238B (en) * | 2013-10-28 | 2017-09-15 | 中国石油化工股份有限公司 | Hydrofining crude terephthalic acid catalyst and its preparation method |
| CN105085138A (en) * | 2014-05-16 | 2015-11-25 | 上海星可高纯溶剂有限公司 | Purification method of high-purity organic solvent n-hexane |
| CN104707566A (en) * | 2015-02-17 | 2015-06-17 | 中国海洋大学 | Charcoal sphere as well as preparation method and application thereof |
| CN104707567A (en) * | 2015-04-08 | 2015-06-17 | 东南大学 | Preparation method of microwave nitric acid modified activated carbon for removing lead ions from water and application of microwave nitric acid modified activated carbon |
| CN104790262A (en) * | 2015-04-28 | 2015-07-22 | 杭州特种纸业有限公司 | Activated carbon filter paper, and preparation method and application thereof |
| CN105905897A (en) * | 2015-07-01 | 2016-08-31 | 洛阳名力科技开发有限公司 | Preparation method of active carbon for waste water treatment |
| CN105233790A (en) * | 2015-09-30 | 2016-01-13 | 江苏通瑞环保科技发展有限公司 | Preparation method of modified active carbon |
| CN105233790B (en) * | 2015-09-30 | 2018-05-18 | 江苏通瑞环保科技发展有限公司 | A kind of preparation method of modified activated carbon |
| CN105883799A (en) * | 2016-04-25 | 2016-08-24 | 贵州安凯达实业股份有限公司 | Method for improving activity of activated carbon |
| CN105883799B (en) * | 2016-04-25 | 2018-06-29 | 贵州安凯达实业股份有限公司 | A kind of activity carbon activity improves method |
| WO2019109337A1 (en) * | 2017-12-08 | 2019-06-13 | 南京林业大学 | Graphite-like microcrystal carbon nanomaterial, preparation method therefor and use thereof |
| CN107936775A (en) * | 2017-12-22 | 2018-04-20 | 枞阳县三金颜料有限责任公司 | A kind of preparation method of heat-resistant, wear-resistant ceramic resin coating |
| CN109455716A (en) * | 2018-10-23 | 2019-03-12 | 中国科学院山西煤炭化学研究所 | A kind of preparation method of the super capacitor active carbon with ultra low surface oxygen-containing functional group |
| CN110624501A (en) * | 2019-08-28 | 2019-12-31 | 江苏中科睿赛污染控制工程有限公司 | Adsorbent for strengthening radon removal and adsorption purification device |
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Open date: 20080924 |