CN102583699A - Method for ozonizing water by using nano neodymium oxide as catalyst - Google Patents
Method for ozonizing water by using nano neodymium oxide as catalyst Download PDFInfo
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- CN102583699A CN102583699A CN2011103993012A CN201110399301A CN102583699A CN 102583699 A CN102583699 A CN 102583699A CN 2011103993012 A CN2011103993012 A CN 2011103993012A CN 201110399301 A CN201110399301 A CN 201110399301A CN 102583699 A CN102583699 A CN 102583699A
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Abstract
Catalytic ozonizing technology is a high-grade oxidative degradation process based on the combination of a catalyst and ozonization. The key lies in the development and application of an efficient catalyst. The invention develops a neodymium oxide nano catalyst through simple and convenient chemical precipitation, water heating and calcining treatment on trivalent neodymium ions, provides a using method of the neodymium oxide nano catalyst and develops a new field of water treatment to which a rare-earth oxide nano material is applied. The obtained nano structure is uniform in size and high in dispersity, shows a good catalytic performance in ozonizing and degrading phenol and has wide application prospect.
Description
Technical field
The invention belongs to water treatment and environmental catalysis field, relate to a kind of with the ozonization water treatment method of nano oxidized neodymium as catalyzer.
Background technology
Rare earth oxide has obtained using widely as the every field at functional materials such as luminescent material, magneticsubstance, superconductor, high-performance ceramic, UV light absorber.Rare earth compound has advantages of high catalytic activity, when particularly rare earth oxide is as catalyzer, has characteristics such as cost is low, activity is high, selectivity is good.Rare earth oxide is mainly used in fields such as cracking of oil, rubber are synthetic, ammonia synthesis, environment protection as catalyzer, and compares with traditional bulk phase catalyst, and the use of nano material can improve the catalytic efficiency (of catalyzer largely.
In recent years, rare earth nano material many researchs have at home and abroad all obtained many achievements, and oxide nano rare earth has shown more superior performance as in the rare earth compound important one type.Perfect along with the preparation method of oxide nano rare earth makes its application in fields such as functional material, catalyzer possess feasibility more.
The catalytic ozonation technology is developed recently, at normal temperatures and pressures with the method for oxidation operation; It is based on the advanced oxidation degradation process that catalyzer and ozonize combine; Thereby its purpose is to promote the degraded of pollutent, raising ozone utilization rate to reduce running cost, and key is the exploitation and the application of effective catalyst.The present invention is devoted to develop the rare earth nano catalyzer of highly effective, and ozonization water treatment method is provided on this basis.
Summary of the invention
The objective of the invention is through easy hydrothermal method, developed the Neodymium trioxide nanocatalyst and proposed its method of use.The object of the invention can be realized through following technical scheme:
(1) preparation of nano oxidized neodymium: preparation contains trivalent neodymium ion (Nd
3+) 0.01-0.1molL
-1Neodymium salt brine solution and 5molL
-1NaOH solution, stir down NaOH solution slowly be added dropwise in the neodymium salts solution, become 10 to the pH of mixture; Continue to stir 10min, solution is transferred in the polytetrafluoroethyllining lining reaction kettle, react 12h down at 120-180 ℃; Reaction finishes, and is cooled to room temperature, filters; Washing precipitation is neutral to pH, will precipitate oven dry and in air atmosphere 500 ℃ calcine 2h, obtain nano oxidized neodymium;
(2) ozonization water treatment: the nano oxidized neodymium sample that will obtain joins in the ozonization water treatment system as catalyzer, feeds ozone, starts organic pollutant in stirring, the degradation water simultaneously;
(3) recovery of nano oxidized neodymium sample: ozonation treatment finishes, through leave standstill, centrifugal or filter, nano oxidized neodymium sample is separated from the aqueous solution, be used for catalytic process next time.
In experimentation, we find that pH reaches at 10 o'clock, and the Neodymium trioxide nanometer material structure that obtains is even, and the ratio of the amount of gained nanocatalyst and the quality of processing waste water is 0.001, temperature of reaction can reach catalytic effect preferably when room temperature.
Beneficial effect of the present invention: at different neodymium ion (Nd
3+) initial concentration and the slightly variant sample of the following acquisition of different hydrothermal temperatures, under identical ozone input amount, catalytic amount, temperature of reaction, the degradation rate of organic pollutant in the sewage all to be accelerated to some extent, mineralization degree increases.Compare with existing treatment process, the water treatment method that the present invention proposes has outstanding feature:
(1) preparation method of nano oxidized neodymium is simple to operate, and raw material is easy to get, and the building-up process cycle is short, nontoxic pollution-free.
(2) nano oxidized neodymium particle scale is less, in water, has good dispersiveness, helps improving and the contacting of ozone, water pollutant.Therefore in use, less input amount can obtain catalytic effect preferably.
(3) nano oxidized neodymium has physical strength preferably, under the catalytic ozonation condition, has stability preferably, is repeatedly used, and catalytic effect can both be kept preferably, and this carries out practical application to helping it.
Description of drawings
Fig. 1 is the TEM photo of embodiment 1 products obtained therefrom;
Fig. 2 is the XRD figure spectrum of embodiment 1 products obtained therefrom;
Fig. 3 is the degraded situation of phenol under Neodymium trioxide nano material in independent ozonize (catalyst-free) and the instance 1 (sample 1) catalytic ozonation;
Fig. 4 is the degraded situation of phenol under Neodymium trioxide nano material (sample 3) catalytic ozonation in Neodymium trioxide nano material in independent ozonize (catalyst-free), the instance 2 (sample 2) catalytic ozonation, the instance 3;
Fig. 5 is the degraded situation of phenol under Neodymium trioxide nano material (sample 5) catalytic ozonation in Neodymium trioxide nano material in independent ozonize (catalyst-free), the instance 4 (sample 4) catalytic ozonation, the instance 5.
Embodiment
For method of the present invention is described more specifically, provide embodiments of the invention below, but application of the present invention is not limited thereto.
Take by weighing 0.40g Nd
2O
3In the single port flask, add the concentrated hydrochloric acid about about 10mL, be heated to oxide compound and dissolve fully, extremely about 140 ℃ of elevated temperatures, the concentrated hydrochloric acid in the uncovered flask of rushing.With adding 40ml deionized water, stirring and dissolving in the solid transfer in the flask to the beaker; Dripping NaOH solution (5mol/L) to pH value is 10; Continue to stir 10min, solution is transferred in the polytetrafluoroethyllining lining reaction kettle that volume is 50mL, react 12h down at 180 ℃.React and finish, be cooled to room temperature, filter, washing precipitation is neutral to pH, will be deposited in 80 ℃ of oven dry, places retort furnace air atmosphere to calcine 2h down for 500 ℃ then, obtains sample 1.Its TEM photo is seen Fig. 1, shows it is the nanorod structure of the about 10nm of diameter; The XRD figure spectrum is seen Fig. 2, and all diffraction peaks all can go out the peak position coupling with Neodymium trioxide body-centered cubic structure (JCPDS No 21-0579), and explanation is Nd
2O
3The BET specific surface area is 37.1m
2/ g.
Embodiment 2
Take by weighing 0.68g Nd
2O
3In the single port flask, add the concentrated hydrochloric acid about about 10mL, be heated to oxide compound and dissolve fully, extremely about 140 ℃ of elevated temperatures, the concentrated hydrochloric acid in the uncovered flask of rushing.With adding 40ml deionized water, stirring and dissolving in the solid transfer in the flask to the beaker; Dripping NaOH solution (5mol/L) to pH value is 10; Continue to stir 10min, solution is transferred in the polytetrafluoroethyllining lining reaction kettle that volume is 50mL, react 12h down at 120 ℃.React and finish, be cooled to room temperature, filter, washing precipitation is neutral to pH, will be deposited in 80 ℃ of oven dry, places retort furnace air atmosphere to calcine 2h down for 500 ℃ then, obtains sample 2.
Embodiment 3
Take by weighing 0.06g Nd
2O
3In the single port flask, add the concentrated hydrochloric acid about about 10mL, be heated to oxide compound and dissolve fully, extremely about 140 ℃ of elevated temperatures, the concentrated hydrochloric acid in the uncovered flask of rushing.With adding 40ml deionized water, stirring and dissolving in the solid transfer in the flask to the beaker; Dripping NaOH solution (5mol/L) to pH value is 10; Continue to stir 10min, solution is transferred in the polytetrafluoroethyllining lining reaction kettle that volume is 50mL, react 12h down at 150 ℃.React and finish, be cooled to room temperature, filter, washing precipitation is neutral to pH, will be deposited in 80 ℃ of oven dry, places retort furnace air atmosphere to calcine 2h down for 500 ℃ then, obtains sample 3.
Embodiment 4
Take by weighing 0.50g Nd
2O
3In the single port flask, add the concentrated hydrochloric acid about about 10mL, be heated to oxide compound and dissolve fully, extremely about 140 ℃ of elevated temperatures, the concentrated hydrochloric acid in the uncovered flask of rushing.With adding 40ml deionized water, stirring and dissolving in the solid transfer in the flask to the beaker; Dripping NaOH solution (5mol/L) to pH value is 10; Continue to stir 10min, solution is transferred in the polytetrafluoroethyllining lining reaction kettle that volume is 50mL, react 12h down at 160 ℃.React and finish, be cooled to room temperature, filter, washing precipitation is neutral to pH, will be deposited in 80 ℃ of oven dry, places retort furnace air atmosphere to calcine 2h down for 500 ℃ then, obtains sample 4.
Embodiment 5
Take by weighing 0.40g Nd
2O
3In the single port flask, add the concentrated hydrochloric acid about about 10mL, be heated to oxide compound and dissolve fully, extremely about 140 ℃ of elevated temperatures, the concentrated hydrochloric acid in the uncovered flask of rushing.With adding 40ml deionized water, stirring and dissolving in the solid transfer in the flask to the beaker; Dripping NaOH solution (5mol/L) to pH value is 10; Continue to stir 10min, solution is transferred in the polytetrafluoroethyllining lining reaction kettle that volume is 50mL, react 12h down at 120 ℃.React and finish, be cooled to room temperature, filter, washing precipitation is neutral to pH, will be deposited in 80 ℃ of oven dry, places retort furnace air atmosphere to calcine 2h down for 500 ℃ then, obtains sample 5.
Embodiment 6
Contain in the simulated wastewater that initial phenol concentration is 100mg L-1 at 200ml, add different oxidation neodymium nano material 0.20g, start stirring, in 20 ℃ of ozone that feed ozone flow 0.40mg min-1 down of temperature of reaction, the concentration of phenol under the record different time.The result is respectively like Fig. 3, shown in 4,5.
Be respectively the degraded situation of phenol under Neodymium trioxide nano material in independent ozonize (catalyst-free) and the instance 1 (sample 1) catalytic ozonation among Fig. 3, the adding that shows the Neodymium trioxide nano material has significantly promoted the degraded of phenol;
Be respectively in Neodymium trioxide nano material in independent ozonize (catalyst-free), the instance 2 (sample 2) catalytic ozonation, the instance 3 the degraded situation of phenol under Neodymium trioxide nano material (sample 3) the catalytic ozonation catalytic ozonation among Fig. 4, the adding that shows the Neodymium trioxide nano material has significantly promoted the degraded of phenol;
Be respectively in Neodymium trioxide nano material in independent ozonize (catalyst-free), the instance 4 (sample 4) catalytic ozonation, the instance 5 the degraded situation of phenol under Neodymium trioxide nano material (sample 5) catalytic ozonation among Fig. 5, the adding that shows the Neodymium trioxide nano material has significantly promoted the degraded of phenol.
Claims (2)
1. one kind with the ozonization water treatment method of nano oxidized neodymium as catalyzer; It is characterized in that in the system of ozonization water treatment, adding nano oxidized neodymium material as catalyzer; Promote the degraded of phenol organic pollutant, step is: the preparation of (1) nano oxidized neodymium: preparation contains trivalent neodymium ion (Nd
3+) 0.01-0.1molL
-1Neodymium salt brine solution and 5molL
-1NaOH solution, stir down NaOH solution slowly be added dropwise in the neodymium salts solution, become 10 to the pH of mixture; Continue to stir 10min, solution is transferred in the polytetrafluoroethyllining lining reaction kettle, react 12h down at 120-180 ℃; Reaction finishes, and is cooled to room temperature, filters; Washing precipitation is neutral to pH, will precipitate oven dry and in air atmosphere 500 ℃ calcine 2h, obtain nano oxidized neodymium;
(2) ozonization water treatment: the nano oxidized neodymium sample that will obtain joins in the ozonization water treatment system as catalyzer, feeds ozone, starts organic pollutant in stirring, the degradation water simultaneously;
(3) recovery of nano oxidized neodymium sample: ozonation treatment finishes, through leave standstill, centrifugal or filter, nano oxidized neodymium sample is separated from the aqueous solution, be used for catalytic process next time.
2. according to claim 1 with the ozonization water treatment method of nano oxidized neodymium as catalyzer, the amount of interpolation catalyzer is 0.001 with the ratio of the quality of processing waste water.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350002A (en) * | 2013-07-19 | 2013-10-16 | 上海中科高等研究院 | Nanorod-shaped oxide catalyst for catalyzing oxidative coupling of methane to prepare ethane and ethylene as well as preparation method and application of nanorod-shaped oxide catalyst |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003252622A (en) * | 2002-03-01 | 2003-09-10 | National Institute For Materials Science | Production method for nano acicular ceria powder |
| RU2233803C1 (en) * | 2002-11-18 | 2004-08-10 | Гончаров Владимир Ильич | Method for biochemical treatment of sewage |
| CN1546397A (en) * | 2003-12-09 | 2004-11-17 | 哈尔滨工业大学 | Method for honeycomb ceramics catalytic ozonization decomposition of organic matters in water |
| CN1552517A (en) * | 2003-12-19 | 2004-12-08 | 广东工业大学 | Preparation of nano cerium-zirconium rare-earth composite fluorine compound solid solution based catalyst |
| JP2006346528A (en) * | 2005-06-13 | 2006-12-28 | Toyota Central Res & Dev Lab Inc | Catalyst carrier for exhaust gas purification, catalyst for exhaust gas purification, and manufacturing method of catalyst carrier for exhaust gas purification |
| CN101766999A (en) * | 2009-12-31 | 2010-07-07 | 浙江工业大学 | Nd2O3-ACF catalyst, preparation method and application |
| CN102249395A (en) * | 2011-06-27 | 2011-11-23 | 江南大学 | Water ozonization treatment method by taking cerium oxide nanomaterial as catalyst |
-
2011
- 2011-12-06 CN CN2011103993012A patent/CN102583699A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003252622A (en) * | 2002-03-01 | 2003-09-10 | National Institute For Materials Science | Production method for nano acicular ceria powder |
| RU2233803C1 (en) * | 2002-11-18 | 2004-08-10 | Гончаров Владимир Ильич | Method for biochemical treatment of sewage |
| CN1546397A (en) * | 2003-12-09 | 2004-11-17 | 哈尔滨工业大学 | Method for honeycomb ceramics catalytic ozonization decomposition of organic matters in water |
| CN1552517A (en) * | 2003-12-19 | 2004-12-08 | 广东工业大学 | Preparation of nano cerium-zirconium rare-earth composite fluorine compound solid solution based catalyst |
| JP2006346528A (en) * | 2005-06-13 | 2006-12-28 | Toyota Central Res & Dev Lab Inc | Catalyst carrier for exhaust gas purification, catalyst for exhaust gas purification, and manufacturing method of catalyst carrier for exhaust gas purification |
| CN101766999A (en) * | 2009-12-31 | 2010-07-07 | 浙江工业大学 | Nd2O3-ACF catalyst, preparation method and application |
| CN102249395A (en) * | 2011-06-27 | 2011-11-23 | 江南大学 | Water ozonization treatment method by taking cerium oxide nanomaterial as catalyst |
Non-Patent Citations (2)
| Title |
|---|
| 廖静等: "纳米氧化钕的制备及其性能研究", 《无机盐工业》, vol. 41, no. 1, 10 January 2009 (2009-01-10) * |
| 沙晶等: "铜钕共掺杂纳米TiO2光催化降解二甲肼废水研究", 《光谱学与光谱分析》, vol. 28, no. 10, 1 October 2008 (2008-10-01) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350002A (en) * | 2013-07-19 | 2013-10-16 | 上海中科高等研究院 | Nanorod-shaped oxide catalyst for catalyzing oxidative coupling of methane to prepare ethane and ethylene as well as preparation method and application of nanorod-shaped oxide catalyst |
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Application publication date: 20120718 |