CN109126795A - Fe-Ti composite catalyst and its preparation method and application - Google Patents
Fe-Ti composite catalyst and its preparation method and application Download PDFInfo
- Publication number
- CN109126795A CN109126795A CN201810984272.8A CN201810984272A CN109126795A CN 109126795 A CN109126795 A CN 109126795A CN 201810984272 A CN201810984272 A CN 201810984272A CN 109126795 A CN109126795 A CN 109126795A
- Authority
- CN
- China
- Prior art keywords
- solution
- composite catalyst
- preparation
- ferrous
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
Abstract
Application the invention discloses a kind of Fe-Ti composite catalyst and preparation method thereof and in the treatment of waste water; preparation method includes the following steps: (1) after titanium salt being dissolved in acid solution; ferrous salt is added into acid solution under inert gas protection; stirring to ferrous salt dissolves, and obtains ferrous iron-metatitanic acid solution；(2) aqueous slkali is added dropwise into ferrous iron-metatitanic acid solution and its pH is adjusted to 9~14, then be added dropwise to nitrate solution, be stirred to react；(3) after reaction, reaction solution is cooled to room temperature, be aged, be filtered, washed, dry after obtain Fe-Ti composite catalyst.Preparation method of the invention realizes nanometer Fe using isomorphous replacement method3O4The doping of Ti, has not only widened Fe in lattice3O4Catalysis be applicable in pH value range, and enhance Fe3O4Catalytic activity.
Description
Technical field
The present invention relates to field of waste water treatment more particularly to a kind of Fe-Ti composite catalyst and preparation method thereof and answer
With.
Background technique
With the fast development of dye industry, relative environmental problem increasingly causes the concern of society.Wherein, it contaminates
Material waste water is always to perplex due to the features such as being related to more organic dopant species, coloration height, complicated component, poor biodegradability
The social problem that waste water from dyestuff is effectively administered.
Compared with physico-chemical process other in wastewater treatment, high-level oxidation technology is generated active extremely strong by oxidation reaction
Free radical, it is anti-to carry out the oxidations such as open loop, scission of link, addition, substitution, electronics transfer using free radical and persistent organic pollutants
Process is answered, CO is mineralized into2And H2O is inherently eliminated organic pollutant.Therefore, high-level oxidation technology has been widely used
In the processing links of industrial wastewater and sanitary sewage, and achieve preferable treatment effect.But people are it has also been found that advanced oxidation
Technology there is also some problems in the application, if optimum reaction condition is limited under acidic environment, only pH=3 or so just have compared with
High reactivity, and acid condition is unfavorable to chemical industry equipment；Catalyst Fe2+It is converted into Fe after the completion of reaction3+, thus
A large amount of solid wastes can be generated in subsequent N-process, cannot achieve recycling for catalyst.
In view of the above deficiencies, the exploitation of Fenton-like catalytic oxidation system in recent years has become advanced oxidation processes processing work
The research hotspot of industry waste water.If the Chinese patent literature of Publication No. CN102218321B is to carry by biomass Organic Ingredients
Body, load active component prepare Fe2O3/ C heterogeneous catalysis, oxidative degradation Methyl Orange in Wastewater solve traditional Fenton reaction
The problem of acid consumption is big, equipment is corroded；The Chinese patent literature of Publication No. CN102161526B does carrier with magnesia, bears
Ferro-cobalt metal nano material is carried, the orange II of degrading organic dye waste water achieves good catalytic degradation effect, avoids reaction
Front and back adjusts the pH of waste water, has widened the pH scope of application of heterogeneous Fenton system.
Known Fe2+It is the active constituent in Fenton reaction, and Fe3O4Because of its unique spinel structure and contain Fe2+Group
Point, so having stronger high grade oxidation catalytic reactivity.But it processing with methylene blue (MB) be representative sun from
When subtype waste water from dyestuff, because dye molecule has stable aromatic heterocycle structure, make Fe3O4It is difficult to show preferably advanced urge
Oxidation activity.
Summary of the invention
The present invention provides a kind of Fe-Ti composite catalyst and preparation method thereof, the preparation method is heavy by alkali, aoxidizes
Etc. reaction process realize nanometer Fe3O4The doping of Ti in lattice, to synthesize the Fe-Ti composite catalyst of high activity.
The present invention provides the following technical scheme that
A kind of preparation method of Fe-Ti composite catalyst, comprising the following steps:
(1) after titanium salt being dissolved in acid solution, ferrous salt, stirring to Asia is added into acid solution under inert gas protection
Iron salt dissolved obtains ferrous iron-metatitanic acid solution；
(2) aqueous slkali is added dropwise into ferrous iron-metatitanic acid solution and its pH is adjusted to 9~14, then be added dropwise to nitrate solution, stir
Mix reaction；
(3) after reaction, reaction solution is cooled to room temperature, to obtain Fe-Ti compound after being aged, be filtered, washed, drying
Catalyst.
Preparation method of the invention utilizes the principle of isomorphous replacement, and, oxidation heavy by alkali etc. allows Ti ion to replace a small amount of Fe
Ion realizes nanometer Fe3O4The doping of Ti, has not only widened Fe in lattice3O4Catalysis be applicable in pH value range, and enhance
Fe3O4Catalytic activity, in conjunction with the magnetic separation of solid and liquid with strengthening subsequent that Fe-Ti composite catalyst retains, to obtain
A kind of not only heterogeneous Fenton catalytic performance is excellent, and waste water treating agent efficiently, green.
Nanometer Fe3O4The doping of Ti is excessive or very few in lattice, will affect the Fenton of Fe-Ti composite catalyst
Catalytic performance.Preferably, in step (1), the amount of ferrous salt in terms of ferrous ion, the amount of titanium salt in terms of titanium ion, ferrous salt with
The molar ratio of titanium salt is 2~20: 1.When ferrous salt and titanium salt are in the molar ratio range, in nanometer Fe3O4The doping of Ti in lattice
Measure more appropriate, the Fenton catalytic performance of Fe-Ti composite catalyst is preferable.
It is further preferred that the molar ratio of ferrous salt and titanium salt is 2~10: 1.
It is further preferred that the total concentration of ferrous salt and titanium salt is 0.2~5mol/L in ferrous iron-metatitanic acid solution.Ferrous-
In metatitanic acid solution, when the excessive concentration of ferrous salt and titanium salt, subsequent oxidation reaction is difficult to aoxidize thoroughly, cannot be effectively formed Ti and mix
Miscellaneous nanometer Fe3O4Crystal form influences the catalytic effect of finally obtained catalyst.
Preferably, in step (1), the concentration of the acid solution is 0.5~5mol/L；The acid solution is hydrochloric acid or sulphur
The aqueous solution of acid.
The titanium salt is at least one of titanium sulfate and titanium chloride；The ferrous salt is ferrous sulfate and protochloride
At least one of iron.
Ferrous ions in order to prevent, into acid solution be added ferrous salt when need under inert gas protection into
Row.The inert gas is argon gas, nitrogen or helium.
After titanium salt and ferrous salt is dissolved in acid solution, it is added dropwise to aqueous slkali, is added dropwise to nitrate solution again after mixing evenly,
By ferrous ion partial oxidation at iron ion, and then ferrous ion, iron ion and titanium ion co-precipitation are at Fe-Ti combined oxidation
Object, it is aged to form crystal completely, form the nanometer Fe of Ti doping3O4Crystal, i.e. Fe-Ti composite catalyst.
The aqueous slkali is the aqueous solution of sodium hydroxide, potassium hydroxide, sodium carbonate or sodium bicarbonate.
After ferrous iron-metatitanic acid solution pH is adjusted to 9~14 by dropwise addition aqueous slkali, the temperature of system is maintained at 25~80
℃。
In order to be conducive to the growth of nanocrystal, it is preferred that in step (2), the concentration of nitrate is 0.5~2mol/L；Nitre
The rate of addition of hydrochlorate is 10~100ml/min.
The additional amount of nitrate is related with the amount of initial ferrous ion, and the additional amount of nitrate should ensure that the Asia of sufficient amount
Iron ion is oxidized.Preferably, the molar ratio of initial ferrous ion and the nitrate anion of addition is greater than or equal to 12.
In order to which oxidation reaction carries out completely, it is preferred that in step (2), be stirred to react 1~6h.
In step (3), digestion time long enough should ensure that, to ensure that crystal forms completely, it is preferred that digestion time 4
~for 24 hours.
After the completion of ageing, Fe-Ti composite catalyst is can be obtained in filtering, drying.The drying is vacuum drying, is done
Dry temperature is 40~90 DEG C.
The present invention also provides the Fe-Ti composite catalysts of above-mentioned preparation method preparation.Invention further provides
Application of the Fe-Ti composite catalyst of above-mentioned preparation method preparation in degrading waste water, comprising: H is added into waste water2O2With
The pH of waste water is adjusted to 3~11 by Fe-Ti composite catalyst, carries out catalysis oxidation to waste water.
Fenton-type reagent agent H2O2Additional amount with Fe-Ti composite catalyst is for catalytic oxidation effect and oxidant
Utilization efficiency influence it is significant, it is preferred that H2O2Molar ratio with Fe-Ti composite catalyst is 0.5~32: 1.At this
Within the scope of feed ratio, the degradation effect of catalysis oxidation is preferable, oxidant H2O2Utilization rate it is higher.
Preferably, catalytic oxidation temperature is 20~50 DEG C；The catalytic oxidation time is 1~10h.
Preferably, the waste water is waste water from dyestuff；It is further preferred that the waste water is useless for methylene blue (MB)
Water.
Compared with prior art, the invention has the benefit that
(1) the Fe-Ti composite catalyst that the present invention is synthesized using isomorphous Shift Method, for waste water from dyestuff difficult to degrade
When Fenton-like advanced oxidation reaction, show that catalytic activity is high, the pH scope of application is wide, multiple circulating effect is good and catalyst
The advantages such as ion turnover rate is low, thus be it is a kind of efficiently, the novel heterogeneous Fenton catalyst of green, in Industrial Wastewater Treatment
Field has broad application prospects；
(2) heterogeneous Fe-Ti composite catalyst has wider pH applicable elements, has widened typical Fenton reaction pair
The requirement of pH value of solution, avoids the tune acid or alkali tune process carried out to keep optimum reaction condition, that is, saves operating cost,
In turn simplify processing step.Meanwhile the magnetism of Fe-Ti composite catalyst makes subsequent separation of solid and liquid become simple, conveniently, not only
The recycling and utilization of catalyst are enhanced, and greatly reduces solid waste amount, alleviates its potential hazard to environment.
Detailed description of the invention
Fig. 1 is the XRD spectrum of the Fe-Ti composite catalyst of different iron titanium ratios；
Fig. 2 is that Fe-Ti composite catalyst prepared by embodiment 1 recycles catalytic efficiency figure.
Specific embodiment
Embodiment 1
By 6.5mL TiCl4Solution is added in the HCl solution of 350mL 1M, and under argon gas protection, 80.9g is added
FeSO4·7H2O, stirring is until be completely dissolved；4mol/L sodium hydroxide is added at 80 DEG C in the above solution, as the pH=of solution
When 12.5, then with the speed addition 1mol/LNaNO of 20mL/min3Solution continues to stop after being stirred to react 3h.It is cooled to room temperature,
It is aged 12h, washing to weakly acidic pH, 70 DEG C of vacuum drying are ground spare.
The additional amount of nitrate is equation based on the following reaction, anti-by equimolar according to the initial ferrous ion amount of addition
It should calculate:
(12-4x)Fe2++4x Ti4++(23+9x)HO-+(1-x)NO3 -→4Fe3-xTixO4+(10+6x)H2O+(1-x)NH3
In the present embodiment, the molal quantity of initial ferrous ion is 0.29, and the molal quantity of titanium ion is 0.06, therefore above-mentioned
X=0.5 (i.e. Fe in reaction equation2.5Ti0.5O4), the additional amount for thus calculating nitrate anion is 0.0145 mole.
Thus method calculates the additional amount of nitrate anion in following embodiment.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2.5Ti0.5O4, XRD spectrum is as shown in Figure 1.
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 2: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L (H2O2Additional amount it is identical as the theoretical COD amount of initial MB), adjust
PH=7,25 DEG C of reaction 6h are saved, the COD of reaction front and back solution is measured, calculating solution C OD removal rate is 75.2%.
H2O2-Fe2.5Ti0.5O4After system catalysis oxidation MB, Fe2.5Ti0.5O4Catalyst can be regenerated through ozone.After regeneration
Fe2.5Ti0.5O4Catalyst can be repeated for oxidative degradation MB.
It can be seen that in continuous 5 oxidation-regeneration cycles from such as Fig. 2, Fe2.5Ti0.5O4Catalyst activity restores good,
H2O2-Fe2.5Ti0.5O4The COD removal rate of system catalysis oxidation MB is held essentially constant, 75% or so.
Embodiment 2
14.4g Ti(SO4)2Solution is added in the HCl solution of 75mL 5M, and under nitrogen protection, 58g FeCl is added2·
4H2O, stirring is until be completely dissolved；4mol/L potassium hydroxide is added at 80 DEG C in the above solution, makes the pH=11.9 of solution
When, then with the NaNO of the speed addition 2mol/L of 20mL/min3Solution continues to stop after being stirred to react 6h.It is cooled to room temperature, it is old
Change washing to weakly acidic pH for 24 hours, 60 DEG C of vacuum drying are ground spare.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2.5Ti0.5O4, XRD spectrum is as shown in Figure 1.
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 3: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=5,25 DEG C of reaction 6h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 79.3%.
Embodiment 3
3.2mL TiCl4Solution is added in the HCl solution of 360mL 0.5M, and under helium protection, 50.2g is added
FeSO4·7H2O, stirring is until be completely dissolved；1mol/L sodium hydroxide is added at 80 DEG C in the above solution, makes the pH=of solution
When 14, then with the NaNO of the speed addition 1mol/L of 100mL/min3Solution continues to stop after being stirred to react 1h.It is cooled to room
Temperature, is aged 4h, washing to weakly acidic pH, and 90 DEG C of vacuum drying are ground spare.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2.6Ti0.4O4。
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 32: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=6,25 DEG C of reaction 10h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 65.8%.
Comparative example 1
6.5mL TiCl4Solution is added in the HCl solution of 300mL 1M, stirring and dissolving；Add in the above solution at 80 DEG C
Enter 5mol/L sodium carbonate liquor, when making solution system pH=9, then with the NaNO of the speed addition 1mol/L of 10mL/min3Solution,
Continue to stop after being stirred to react 4h.It is cooled to room temperature, is aged 8h, washing to weakly acidic pH, 40 DEG C of vacuum drying are ground spare.
The catalyst of this comparative example preparation is TiO2, XRD spectrum is as shown in Figure 1.
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 2: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=7,20 DEG C of reaction 10h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 30.2%.
Comparative example 2
Under argon gas protection, by 80.9g FeSO4·7H2O is added to the H of 350mL 0.5M2SO4In solution, stirring is until complete
Fully dissolved；The mixed solution of sodium bicarbonate and sodium hydroxide is added at 80 DEG C in the above solution, makes solution system pH=12.0
When, then with the KNO of the speed addition 0.8mol/L of 20mL/min3Solution continues to stop after being stirred to react 3h.It is cooled to room temperature,
It is aged 12h, washing to weakly acidic pH, 70 DEG C of vacuum drying are ground spare.
The catalyst of this comparative example preparation is Fe3O4, XRD spectrum is as shown in Figure 1.
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 8: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=3,40 DEG C of reaction 10h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 12.5%.
Embodiment 4
6.5mL TiCl4Solution is added in the HCl solution of 350mL 1M, and under argon gas protection, 80.9g FeSO is added4·
7H2O, stirring is until be completely dissolved；Sodium hydroxide is added in the above solution at 80 DEG C, when making pH value of solution=10.0, then with
The KNO of 0.5mol/L is added in the speed of 20mL/min3Solution continues to stop after being stirred to react 3h.It is cooled to room temperature, is aged 12h,
Washing to weakly acidic pH, 50 DEG C of vacuum drying are ground spare.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2.5Ti0.5O4。
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 2: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=11,50 DEG C of reaction 8h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 70.2%.
Embodiment 5
9.12g Ti(SO4)2Solution is added in the HCl solution of 400mL 1M, and under argon gas protection, 106g is added
FeSO4·7H2O, stirring is until be completely dissolved；Sodium hydroxide is added in the above solution at 80 DEG C, when making pH value of solution=10.0,
2mol/LNaNO is added with the speed of 40mL/min again3Solution continues to stop after being stirred to react 4h.It is cooled to room temperature, is aged 9h,
Washing to weakly acidic pH, 60 DEG C of vacuum drying are ground spare.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2.7Ti0.3O4。
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 0.5: 1 adds
Enter H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=9,35 DEG C of reaction 6h, measure reaction before and after it is molten
The COD of liquid, calculating solution C OD removal rate is 62.4%.
Embodiment 6
2.1mL TiCl4Solution is added in the HCl solution of 350mL 1M, and under argon gas protection, 106g FeSO is added4·
7H2O, stirring is until be completely dissolved；Sodium hydroxide is added in the above solution at 50 DEG C, when making pH value of solution=9.0, then with
1mol/LNaNO is added in the speed of 20mL/min3Solution continues to stop after being stirred to react 3h.It is cooled to room temperature, is aged 12h, washes
It washs to weakly acidic pH, 70 DEG C of vacuum drying are ground spare.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2.86Ti0.14O4。
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 2: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=7,25 DEG C of reaction 6h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 35.3%.
Embodiment 7
5.6mL TiCl4Solution is added in the HCl solution of 300mL 1M, and under argon gas protection, 27.8g FeSO is added4·
7H2O, stirring is until be completely dissolved；Sodium hydroxide solution is added in the above solution at 70 DEG C, makes solution system pH=10.0
When, then with the NaNO of the speed addition 1mol/L of 20mL/min3Solution continues to stop after being stirred to react 3h.It is cooled to room temperature, it is old
Change 12h, washing to weakly acidic pH, 70 DEG C of vacuum drying are ground spare.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2.25Ti0.75O4, XRD spectrum is as shown in Figure 1.
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 1: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=7,25 DEG C of reaction 6h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 42.4%.
Embodiment 8
8.4mL TiCl4Solution is added in the HCl solution of 300mL 1M, and under argon gas protection, 41.7g FeSO is added4·
7H2O, stirring is until be completely dissolved；Potassium hydroxide is added in the above solution at 60 DEG C, when making pH value of solution=12.0, then with
The NaNO of 0.6mol/L is added in the speed of 50mL/min3Solution continues to stop after being stirred to react 5h.It is cooled to room temperature, is aged
12h, washing to weakly acidic pH, 70 DEG C of vacuum drying are ground spare.
Fe-Ti composite catalyst manufactured in the present embodiment is Fe2TiO4, XRD spectrum is as shown in Figure 1.
It will be seen from figure 1 that being typical Fe when without Ti doping3O4Spinel structure, wherein in 2 θ=30.2 °,
Characteristic diffraction peak at 35.5 °, 43.4 °, 53.7 °, 57.2 °, 62.8 ° respectively correspond in standard spectrogram (220), (311),
(400), (422), (511), (440) crystal face.With the increase of Ti doping, Fe in map3O4Diffraction peak intensity gradually subtract
It is weak, until that obtain is the TiO of rutile-type when Ti replaces Fe completely2, wherein in 2 θ=27.8 °, 36.1 °, 41.5 °, 55 °,
Characteristic diffraction peak at 57.5 °, 70 ° respectively corresponds in standard spectrogram (110), (101), (111), (211), (220), (301)
Crystal face.
100mL 210mg/L MB solution is taken, according to H2O2The ratio that amount ratio with Fe-Ti catalyst material is 2: 1 is added
H2O2With Fe-Ti catalyst, H2O2Additional amount be 386mg/L, adjust pH=7,25 DEG C of reaction 6h, measure reaction before and after solution
COD, calculate solution C OD removal rate be 78.7%.
Technical solution of the present invention and beneficial effect is described in detail in embodiment described above, it should be understood that
Above is only a specific embodiment of the present invention, it is not intended to restrict the invention, it is all to be done in spirit of the invention
Any modification, supplementary, and equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of Fe-Ti composite catalyst, which comprises the following steps:
(1) after titanium salt being dissolved in acid solution, ferrous salt, stirring to ferrous salt is added into acid solution under inert gas protection
Dissolution, obtains ferrous iron-metatitanic acid solution；
(2) aqueous slkali is added dropwise into ferrous iron-metatitanic acid solution and its pH is adjusted to 9~14, then be added dropwise to nitrate solution, stirring is anti-
It answers；
(3) after reaction, reaction solution is cooled to room temperature, be aged, be filtered, washed, dry after obtain the compound catalysis of Fe-Ti
Agent.
2. the preparation method of Fe-Ti composite catalyst according to claim 1, which is characterized in that sub- in step (1)
The amount of molysite is in terms of ferrous ion, and for the amount of titanium salt in terms of titanium ion, the molar ratio of ferrous salt and titanium salt is 2~20: 1.
3. the preparation method of Fe-Ti composite catalyst according to claim 1 or 2, which is characterized in that ferrous iron-metatitanic acid
In solution, the total concentration of ferrous salt and titanium salt is 0.2~5mol/L.
4. the preparation method of Fe-Ti composite catalyst according to claim 1, which is characterized in that in step (1), institute
The concentration for stating acid solution is 0.5~5mol/L.
5. the preparation method of Fe-Ti composite catalyst according to claim 1, which is characterized in that in step (2), nitre
The concentration of hydrochlorate is 0.5~2mol/L；The rate of addition of nitrate is 10~100ml/min.
6. the preparation method of Fe-Ti composite catalyst according to claim 1, which is characterized in that old in step (3)
Change the time be 4~for 24 hours.
7. a kind of Fe-Ti composite catalyst, which is characterized in that described in any item preparation method systems according to claim 1~6
It is standby to obtain.
8. a kind of application of Fe-Ti composite catalyst as claimed in claim 7 in degrading waste water characterized by comprising
H is added into waste water2O2With Fe-Ti composite catalyst, the pH of waste water is adjusted to 3~11, catalysis oxidation is carried out to waste water.
9. application according to claim 8, which is characterized in that H2O2Molar ratio with Fe-Ti composite catalyst is
0.5~32: 1.
10. application according to claim 8, which is characterized in that catalytic oxidation temperature is 20~50 DEG C；Catalysis oxidation
Reaction time is 1~10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810984272.8A CN109126795A (en) | 2018-08-27 | 2018-08-27 | Fe-Ti composite catalyst and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810984272.8A CN109126795A (en) | 2018-08-27 | 2018-08-27 | Fe-Ti composite catalyst and its preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109126795A true CN109126795A (en) | 2019-01-04 |
Family
ID=64828517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810984272.8A Pending CN109126795A (en) | 2018-08-27 | 2018-08-27 | Fe-Ti composite catalyst and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109126795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075846A (en) * | 2019-05-08 | 2019-08-02 | 武汉工程大学 | A kind of titanium MODIFIED Fe3O4Magnetic nanoparticle and its preparation method and application |
| CN113546625A (en) * | 2021-04-02 | 2021-10-26 | 中国科学院城市环境研究所 | Electrostatic spinning defective TiO2/Fe3O4Composite nanofiber material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601998A (en) * | 2009-06-11 | 2009-12-16 | 浙江省环境保护科学设计研究院 | A kind of Preparation of catalysts method that is used for treating high-concentration organic wastewater through catalytic oxidation |
| CN102755892A (en) * | 2012-07-12 | 2012-10-31 | 浙江大学 | Method and application of preparing high-level oxidation catalyst through cobalt ore smelting slag |
-
2018
- 2018-08-27 CN CN201810984272.8A patent/CN109126795A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601998A (en) * | 2009-06-11 | 2009-12-16 | 浙江省环境保护科学设计研究院 | A kind of Preparation of catalysts method that is used for treating high-concentration organic wastewater through catalytic oxidation |
| CN102755892A (en) * | 2012-07-12 | 2012-10-31 | 浙江大学 | Method and application of preparing high-level oxidation catalyst through cobalt ore smelting slag |
Non-Patent Citations (2)
| Title |
|---|
| SOMA BANERJEE ET AL.: "Graphene oxide (rGO)-metal oxide (TiO2/Fe3O4) based nanocomposites for the removal of methylene blue", 《APPLIED SURFACE SCIENCE》 * |
| 花俊峰: "废水处理中非均相中性催化氧化体系的研究", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075846A (en) * | 2019-05-08 | 2019-08-02 | 武汉工程大学 | A kind of titanium MODIFIED Fe3O4Magnetic nanoparticle and its preparation method and application |
| CN113546625A (en) * | 2021-04-02 | 2021-10-26 | 中国科学院城市环境研究所 | Electrostatic spinning defective TiO2/Fe3O4Composite nanofiber material and preparation method thereof |
| CN113546625B (en) * | 2021-04-02 | 2024-04-16 | 中国科学院城市环境研究所 | Electrostatic spinning defect TiO 2 /Fe 3 O 4 Composite nanofiber material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Photocatalytic degradation of rhodamine B and phenol by solution combustion synthesized BiVO4 photocatalyst | |
| CN107376968B (en) | Tungstic acid/double Z shaped photochemical catalyst of carbonitride/bismuth oxide and its preparation method and application | |
| CN108097261B (en) | Efficient and stable iron-manganese composite oxide catalyst and preparation method and application thereof | |
| CN111790422A (en) | Graphitized radical nitrogen complexed Fe (III) -Fe0Catalyst and synthesis method and application thereof | |
| CN113663693B (en) | Preparation method of indium zinc sulfide-titanium dioxide composite material and application of indium zinc sulfide-titanium dioxide composite material in production of hydrogen peroxide for wastewater treatment | |
| Zhou et al. | Hollow Meso-crystalline Mn-doped Fe3O4 Fenton-like catalysis for ciprofloxacin degradation: Applications in water purification on wide pH range | |
| CN102600857A (en) | Preparation method of carbon ball-loaded CuO-BiVO4 heterojunction compound photocatalyst | |
| CN113231082A (en) | High-activity iron-based-sulfide heterogeneous Fenton composite material and method for removing organic pollutants by using same | |
| CN113209968B (en) | Preparation method and application of magnetic copper-iron bimetallic biomass charcoal microsphere | |
| CN105056973B (en) | Efficient Bi2S3-BiFeO3 composite visible-light-driven photocatalyst prepared through in-situ growth with chemical corrosion method and application of Bi2S3-BiFeO3 composite visible-light-driven photocatalyst | |
| Zhang et al. | Photo-assisted bismuth ferrite/manganese dioxide/nickel foam composites activating PMS for degradation of enrofloxacin in water | |
| CN109126795A (en) | Fe-Ti composite catalyst and its preparation method and application | |
| CN110813349A (en) | Binary metal oxide composite carbon nitride catalyst and preparation method and application thereof | |
| CN101716503B (en) | Visible light catalyst BiNbO4, preparation method thereof and application thereof | |
| CN110433830A (en) | Preparation method of modified flower-shaped bismuth oxyiodide photocatalyst | |
| CN113751015A (en) | Amorphous heterogeneous Fenton catalyst and preparation method and application thereof | |
| CN106964333B (en) | Rare earth supported catalyst for treating sewage, preparation method and application thereof, and method for treating sewage by catalytic oxidation of ozone | |
| Qu et al. | A new visible-light-induced Z-scheme photocatalytic system: Er3+: Y3Al5O12/(MoS2/NiGa2O4)-(BiVO4/PdS) for refractory pollutant degradation with simultaneous hydrogen evolution | |
| CN113426455B (en) | Fenton-like catalyst with manganese dioxide clusters loaded with iron and preparation method thereof | |
| CN112723493B (en) | Cobaltosic oxide/magnesium oxide-titanium composite electrode, preparation method and application thereof, and treatment method of ammonia nitrogen-containing wastewater | |
| CN103143368B (en) | A kind of process chemical industrial organic wastewater Catalysts and its preparation method | |
| CN110354845A (en) | A kind of bismuth tungstate photocatalyst and its preparation method and application of carbon nano dot modification | |
| CN111871417B (en) | Mesoporous nanorod catalyst and preparation method and application thereof | |
| CN106732538B (en) | A kind of composite catalyst and the preparation method and application thereof | |
| CN103449511A (en) | Strontium titanate submicron crystal and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190104 |