CN108620053A - A kind of method that molten-salt growth method prepares meta-titanium perborate-potassium tetratitanate composite catalyzing material - Google Patents
A kind of method that molten-salt growth method prepares meta-titanium perborate-potassium tetratitanate composite catalyzing material Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 31
- 239000010936 titanium Substances 0.000 title claims abstract description 26
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 229910052700 potassium Inorganic materials 0.000 title claims abstract description 25
- 239000011591 potassium Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 claims abstract description 17
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 11
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 11
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 20
- 238000001354 calcination Methods 0.000 claims description 9
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 8
- 239000011833 salt mixture Substances 0.000 claims description 7
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 7
- 229910019016 NaNO3—KNO3 Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 238000010931 ester hydrolysis Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 8
- 239000002243 precursor Substances 0.000 abstract description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 5
- 239000006184 cosolvent Substances 0.000 abstract description 5
- 230000001699 photocatalysis Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002127 nanobelt Substances 0.000 abstract description 3
- 238000007146 photocatalysis Methods 0.000 abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 14
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 7
- 239000004408 titanium dioxide Substances 0.000 description 7
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000007500 overflow downdraw method Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- -1 alkali metal cation Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002121 nanofiber Substances 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- 238000003746 solid phase reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910003083 TiO6 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007716 flux method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- IRPDISVJRAYFBI-UHFFFAOYSA-N nitric acid;potassium Chemical compound [K].O[N+]([O-])=O IRPDISVJRAYFBI-UHFFFAOYSA-N 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
- B01J23/04—Alkali metals
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a kind of methods preparing meta-titanium perborate potassium tetratitanate composite catalyzing material as the molten-salt growth method of cosolvent using mixed nitrate, belong to technical field of material.For the present invention using butyl titanate as raw material, TiO is made in hydro-thermal method2Material precursor adds mixed nitrate as cosolvent, meta-titanium perborate potassium tetratitanate composite catalyzing material is prepared by nitrate molten-salt growth method.This method have many advantages, such as preparation condition easy controllable, equipment and it is simple for process, yield is big, at low cost.The product obtained is 6 13 microns long, and the wide nanobelt of about 200 rans has wide practical use in photocatalytic pollutant degradation and photocatalysis hydrogen production etc..
Description
Technical field
The present invention relates to a kind of methods that fusion method prepares meta-titanium perborate-potassium tetratitanate composite catalyzing material, belong to material
Preparing technical field.
Background technology
Titanate is the higher a kind of semiconductor layers metallic compound of presently found photocatalytic activity, good because possessing
Anti-light corrosivity and high activity the advantages that, cause extensively study concern.The laminate skeleton of layered titanate is by octahedron
TiO6It is connected to each other in a manner of total side or corner-sharing, sprawls to form negatively charged two-dimensional layer oxide, negatively charged layer
Contain alkali metal cation between plate.And alkali metal cation have interlayer ion switching performance, excellent absorption property and compared with
High chemism.In addition layer structure can keep good stability in ion exchange, can adsorb harmful heavy metal
Ion has the function that purify water with this.Currently, titanate is also widely studied there are many preparation method, mainly have
Fusion method, flux method, sintering process, KDC (Kneading Drying Calcination) methods and hydro-thermal method.
Fusion method is using titanium dioxide and carbonate as raw material, and it is mixed in proportion, and is placed in 1200~1500
It is melted at a high temperature of DEG C, then carries out crystallisation by cooling, finally prepare titanate whisker.Purity can be obtained with the method
Higher monocrystalline, product good crystallinity, but yield is relatively low, and reaction temperature is higher.Shen etc. is reported through fusion method pair
The preparation of Nano lines of potassium titanate, using TiO2And K2CO3For raw material, with the amount of substance than 3：1 mixes grinding uniformly, then
Roasting 2 hours is carried out at 1000 DEG C, finally prepares potassium titanate nanofiber.
Flux growth metrhod is using titanium dioxide and carbonate as raw material, using corresponding tungstates or molybdate as fluxing agent and original
Material mixing, is melted at a high temperature of 900~1300 DEG C, to form supersaturated molten liquid, and crystallization is therefrom precipitated, is obtained
Titanate nanobelt.This method high income, good crystallinity, but fluxing agent and separation are costly, and cost is higher.
Sintering process is to be mixed the uniform height for being placed on 600~1200 DEG C using titanium dioxide and carbonate as raw material
Temperature is lower to carry out solid phase reaction, finally prepares titanate nanobelt.The method is at low cost, simple for process, easy to operate, and last system
Standby titanate high income is suitble to industrialized production, but that there are reaction temperatures is excessively high, the production cycle is long, energy consumption is big, and product is made
The shortcomings of high crystalline is bad.In addition, there are also modification method, if chilling is sintered crystallisation, the method be with titanium dioxide and
Carbonate is raw material, carries out solid phase reaction at a temperature of what is be uniformly mixed be placed on 900~1200 DEG C, then sample is in air
Quick refrigeration is carried out, it is finally thermally treated to prepare titanate whisker.But this method needs high-temperature process twice, energy consumption compared with
Height, production cost are higher.And KDC methods also belong to the sintering process of improvement, which is by regarding titanium dioxide and carbonate as original
Expect and be slurried with water mixing, is reacted at a temperature of 1000~1100 DEG C after dry, prepare titanate whisker.With this
Product crystallinity prepared by method is preferable, but technics comparing is complicated.For Alnano etc. using P25 as raw material, the KOH for being placed in 17M is molten
Liquid carries out hydro-thermal reaction at 110 DEG C.Product after hydro-thermal uses CH respectively3The aqueous solution and deionized water of COOH is washed
It washs, is roasted at 400~700 DEG C, finally prepare Nano lines of potassium titanate.
Hydro-thermal method is under high pressure to carry out aqueous solution and titanium dioxide using metal hydroxides and carbonate as raw material
Hydro-thermal reaction finally prepares titanate nano fiber.This method high income can obtain the bigger whisker of path length, but needs pair
The parameters such as temperature, basicity, reaction time are strictly controlled, and of high cost, dangerous property.Gier and Salzberg are in 600
~700 DEG C, prepare crystal whisker of hexa potassium titanate under the conditions of 500~4000atm.Toshitaka etc. uses hydrated titanium dioxide conduct
Raw material, using metal Zn as dehydrating agent, prepares crystal whisker of hexa potassium titanate under the conditions of 390 DEG C, 150~200atm.
Above method is required for carrying out the preparation of sample under the high temperature conditions, and the present invention uses molten-salt growth method, relatively low with fusing point
Nitrate substitution carbonate reduce calcination temperature, be prepared for titanate material.In addition, answering by different-shape titanate
It closes, improves titanate photocatalysis performance.
Invention content
It is an object of the invention to propose a kind of to prepare-four titanium of meta-titanium perborate by the molten-salt growth method of cosolvent of mixed nitrate
The method of sour potassium composite catalyzing material；For this method using butyl titanate as raw material, TiO is made in hydro-thermal2Material precursor, then with mixed
Conjunction nitrate is cosolvent, and meta-titanium perborate-potassium tetratitanate composite catalyzing material is prepared by molten-salt growth method；This method, which has, prepares item
Part is convenient controllable, equipment and it is simple for process, product yield is high, of low cost the advantages that；Meta-titanium perborate-the potassium tetratitanate obtained
Composite catalyzing material, pattern are nano strip, and nanometer belt surface is smooth, and edge corner angle are clear, and length is about 6-13 microns, wide
Degree is about 200 rans.The composite material photocatalysis performance is excellent.
Prepared by the molten-salt growth method of meta-titanium perborate-potassium tetratitanate composite catalyzing material, which is characterized in that the method passes through metatitanic acid
Four butyl esters occur hydrolysis and mixed nitrate later and melt, obtained meta-titanium perborate-potassium tetratitanate composite catalyzing material, including with
Lower step：
(1) using solution of tetrabutyl titanate as raw material, hydro-thermal reaction is carried out, then centrifuged, washed and is dried, be made
TiO2Presoma；
(2) by TiO obtained2Presoma and NaNO3-KNO3Salt-mixture is uniformly mixed, calcining, and Temperature fall washs, and does
It is dry, you can meta-titanium perborate-potassium tetratitanate composite catalyzing material is made.
In the above preparation method, the butyl titanate in the step (1) and nitrate are respectively four fourth of commercially available metatitanic acid
Ester.
In the above preparation method, the operation in the step (1) carries out under stirring.
In the above preparation method, in the step (1), hydro-thermal method prepares TiO2In presoma, the temperature of hydro-thermal reaction
It is 80-200 DEG C.
In the above preparation method, the soaking time in the step (1) under hydrothermal temperature is 12-48 hours.
In the above preparation method, in the step (1) and (2) drying mode using 50-100 DEG C of vacuum drying.
In the above preparation method, the salt-mixture in the step (2) is commercially available NaNO3And KNO3。
In the above preparation method, NaNO in the step (2)3And KNO3Mixed mass ratio is controlled 5：1 to 1：5 it
Between.
In the above preparation method, TiO in the step (2)2Precursor samples and NaNO3-KNO3The mixing matter of salt-mixture
Amount is than control 5：1 to 1：Between 5.
In the above preparation method, the calcination temperature in the step (2) is 300-800 DEG C.
In the above preparation method, soaking time is 2-6 hours at calcination temperatures in the step (2).
Meta-titanium perborate-potassium tetratitanate composite catalyzing the material prepared using this technology has equipment and simple for process, preparation
The features such as condition is stringent controllable, product yield is high, of low cost, the meta-titanium perborate-potassium tetratitanate composite catalyzing material obtained
In nano strip, catalytic performance is excellent.
Description of the drawings
Fig. 1 is the XRD spectrum of meta-titanium perborate-potassium tetratitanate composite catalyzing material obtained by the embodiment of the present invention 1
Fig. 2 is the transmission electron microscope photo of meta-titanium perborate-potassium tetratitanate composite catalyzing material obtained by the embodiment of the present invention 1
Specific implementation mode
Technical solution of the present invention is described further with reference to embodiment.
The present invention proposes a kind of to prepare that meta-titanium perborate-potassium tetratitanate is compound to urge using mixed nitrate as the molten-salt growth method of cosolvent
Change the method for material, which is characterized in that metatitanic acid is made by the hydrolysis of butyl titanate and the fused salt of nitrate in the method
Sodium-potassium tetratitanate composite catalyzing material, and include the following steps and content：
(1) used butyl titanate, sodium nitrate, potassium nitrate are respectively commercially available butyl titanate, sodium nitrate, nitric acid
Potassium.
(2) experimental implementation carries out under stirring.
(3) hydro-thermal reaction for slowly carrying out butyl titanate, is then centrifuged and is dried.
(4) hydrothermal temperature tested is 80-200 DEG C, and soaking time is 12-48 hours.
(5) experiment drying temperature is 50-100 DEG C.
(6) by TiO obtained2Precursor samples and NaNO3-KNO3Salt-mixture mixing, calcining, Temperature fall, by abundant
Washing, drying, you can meta-titanium perborate-potassium tetratitanate composite catalyzing material is made.
(7) NaNO in testing3And KNO3Mixed mass ratio is controlled 5：1 to 1：Between 5.
(8) TiO in testing2Precursor samples and NaNO3-KNO3The mixing quality of salt-mixture is than control 5：1 to 1：5 it
Between
(9) calcination temperature tested is 300-800 DEG C, and soaking time is 2-6 hours.
It is white powder in prepared meta-titanium perborate-potassium tetratitanate composite catalyzing material appearance.
Under transmission electron microscope, it may be observed that a large amount of nano strip substance, nanometer belt surface is smooth, edge corner angle
Clearly, length is about 6-13 microns, and width is about 200 rans.XRD tests are shown as meta-titanium perborate and potassium tetratitanate.
In short, the composite catalyzing material of meta-titanium perborate-potassium tetratitanate can be obtained with this technology.
Embodiment：5ml acetums are slowly mixed together with 2ml butyl titanates under stirring, continue to stir
30min carries out hydro-thermal reaction for 24 hours at 150 DEG C, and the sample after centrifugation is dried in vacuo at 60 DEG C, obtains TiO2Presoma sample
Product.
Then by TiO2Precursor samples, NaNO3And KNO3With 5：1：1 mass ratio is uniformly mixed, and is calcined at 350 DEG C
4h, after fully washing and dry, you can obtain the composite catalyzing material of meta-titanium perborate-potassium tetratitanate.
Prepared meta-titanium perborate-potassium tetratitanate composite catalyzing material (see Fig. 1) is nano strip, nanometer belt surface light
Sliding, edge corner angle are clear, and length is about 6-13 microns, and width is about 200 rans (see Fig. 2).
Claims (2)
1. the molten salt preparation method of meta-titanium perborate-potassium tetratitanate composite catalyzing material, it is characterised in that：The method passes through metatitanic acid
Meta-titanium perborate-potassium tetratitanate composite catalyzing material is made in the melting of four fourth ester hydrolysis and nitrate, including following
Step：
(1) using solution of tetrabutyl titanate as raw material, hydro-thermal reaction is carried out, then centrifuged, washed and is dried, TiO is made2Before
Drive body；
(2) by TiO obtained2Presoma and NaNO3-KNO3Salt-mixture is uniformly mixed, calcining, and Temperature fall washs, dry, i.e.,
Meta-titanium perborate-potassium tetratitanate composite catalyzing material can be made.
2. preparation method described in accordance with the claim 1, it is characterised in that：Step (1) hydro-thermal method prepares TiO2Presoma
In, it need to be slowly added to butyl titanate under stirring；The temperature of hydro-thermal reaction is 80-200 DEG C in the step (1), is protected
The warm time is 12-48 hours；Drying mode is using 50-100 DEG C of vacuum drying in the step (1)；In the step (2)
NaNO3And KNO3Mass ratio control 5：1 to 1：Between 5, and it is uniformly mixed；TiO in the step (2)2Presoma with
NaNO3-KNO3The mixing quality ratio of salt-mixture is also controlled 5：1 to 1：Between 5, and it is uniformly mixed；Calcining in the step (2)
Temperature is 300-800 DEG C, soaking time 2-6 hours.
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| CN110846717A (en) * | 2019-11-29 | 2020-02-28 | 南京科技职业学院 | Method for preparing sodium titanate whisker by using waste salt containing NaCl |
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- 2017-07-17 CN CN201710579584.6A patent/CN108620053B/en not_active Expired - Fee Related
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