CN108499519A - A kind of carrier hydrotalcite and preparation method thereof and carrier hydrotalcite calcining matter - Google Patents
A kind of carrier hydrotalcite and preparation method thereof and carrier hydrotalcite calcining matter Download PDFInfo
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- CN108499519A CN108499519A CN201710104774.2A CN201710104774A CN108499519A CN 108499519 A CN108499519 A CN 108499519A CN 201710104774 A CN201710104774 A CN 201710104774A CN 108499519 A CN108499519 A CN 108499519A
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- hydrotalcite
- carrier
- calcining matter
- waste water
- carrier hydrotalcite
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
Abstract
The invention belongs to hydrotalcite fields more particularly to a kind of carrier hydrotalcite and preparation method thereof and carrier hydrotalcite calcining matter.Carrier hydrotalcite provided by the invention, including Al2O3Be supported on Al2O3On hydrotalcite.The calcining matter that carrier hydrotalcite provided by the invention obtains after roasting has stronger adsorption capacity to the Cr (VI) in waste water, and its water phase during processing is containing Cr (VI) waste water does not generate muddy suspended matter, processed waste water need to only achieve that the separation of water phase and carrier hydrotalcite calcining matter by standing.The experimental results showed that：Carrier hydrotalcite calcining matter provided by the invention has good adsorption effect to the Cr (VI) in waste water；Compared to using calcined hydrotalcite as adsorbent, using carrier hydrotalcite calcining matter provided by the invention as adsorbent processing waste water containing chrome after, the separation of water phase and adsorbent is more easy.
Description
Technical field
The invention belongs to hydrotalcite fields more particularly to a kind of carrier hydrotalcite and preparation method thereof and carrier hydrotalcite to roast
Burn object.
Background technology
In recent years, with the rapid development of economy, chromium and compound is as metallurgy, plating, process hides, paint, dyestuff etc.
The important source material of industry obtains very extensive application.A large amount of chromium slag, dirt containing chromium powder and chromate waste water are discharged into environment, right
Air, water body and soil cause serious pollution, and potential threaten is constituted to ecological environment and health.
The compound of chromium exists in the form of divalent, trivalent and sexavalence, and toxicity is most strong with Cr VI.Cr VI is to human body
With carcinogenic, mutagenic effect, one of maximum 8 kinds of chemical substances of harm to the human body are listed in, are internationally recognized three kinds
One of 129 kinds of priority pollutants that one of carcinogenic metal object and Environmental Protection Agency generally acknowledge.
In view of the harmfulness of chromium, countries in the world have all carried out strictly the discharge form and discharge capacity of chromium in efflux wastewater
It limits.The discharge upper limit of hexavalent chromium is 0.5mg/L in China, waste water, and the discharge upper limit of total chromium is 1.5mg/L.Strictly
Discharge standard undoubtedly increase the intractability of chromate waste water, how efficient process chromate waste water is current research hotspot.
There are many processing method of chromate waste water, and domestic and international common processing method is by absorption method, reduction method, electrolysis at present
Method, membrane separation process, ion-exchange and bioanalysis etc..Metal composite oxide (LDO) after hydrotalcite roasting, that is, roast water
Talcum has stronger adsorption capacity to Cr (VI), and the adsorbent that can be used as processing waste water containing chrome uses, but due to calcined hydrotalcite
It will disperse during handling waste water in water phase and form suspension, to make calcined hydrotalcite must after completing wastewater treatment
Must carry out centrifugation could be separated from the water.
Invention content
In view of this, the purpose of the present invention is to provide a kind of carrier hydrotalcites and preparation method thereof and carrier hydrotalcite to roast
Object is burnt, when being handled chromate waste water using carrier hydrotalcite calcining matter provided by the invention, carrier hydrotalcite calcining matter is easy
Waste water detaches with treated.
The present invention provides a kind of carrier hydrotalcites, including Al2O3Be supported on Al2O3On hydrotalcite.
Preferably, the Al2O3Mesh number be 30~80 mesh.
The present invention provides a kind of preparation methods of carrier hydrotalcite, include the following steps：
A), by Al2O3It is immersed in the aqueous solution containing magnesium salts and urea；
B) Al after, impregnating2O3It is reacted in hydrothermal reaction kettle, obtains carrier hydrotalcite.
Preferably, in step a), Mg in the aqueous solution2+Total mol concentration with urea is 0.1~2mol/L.
Preferably, in step a), Mg in the aqueous solution2+Molar ratio with urea is 1：(2~4).
Preferably, in step a), the Al2O3Amount ratio with the aqueous solution is (1~2) g：(20~30) mL.
Preferably, in step a), the mode of the immersion is to vacuumize immersion；The time of the immersion is 0.5~2h.
Preferably, in step b), the temperature of the reaction is 100~150 DEG C；The time of the reaction is 8~16h.
The present invention provides a kind of carrier hydrotalcite calcining matter, by carrier hydrotalcite described in above-mentioned technical proposal or above-mentioned
Carrier hydrotalcite prepared by technical solution the method is made after roasting.
Application of the carrier hydrotalcite calcining matter in processing waste water containing chrome described in above-mentioned technical proposal.
Compared with prior art, the present invention provides a kind of carrier hydrotalcites and preparation method thereof and carrier hydrotalcite to roast
Object.Carrier hydrotalcite provided by the invention, including Al2O3Be supported on Al2O3On hydrotalcite.Carrier water provided by the invention
The calcining matter that talcum obtains after roasting has stronger adsorption capacity to the Cr (VI) in waste water, and it contains Cr in processing
(VI) water phase does not generate muddy suspended matter during waste water, and processed waste water only need to achieve that water phase and carry by standing
The separation of body hydrotalcite calcining matter.The experimental results showed that：Carrier hydrotalcite calcining matter provided by the invention is to the Cr in waste water
(VI) there is good adsorption effect；Compared to using calcined hydrotalcite as adsorbent, carrier neatly provided by the invention is used
After stone calcining matter is as adsorbent processing waste water containing chrome, the separation of water phase and adsorbent is more easy.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the SEM figures for the carrier hydrotalcite that the embodiment of the present invention 1 provides；
Fig. 2 is the XRD diagram for the carrier hydrotalcite that the embodiment of the present invention 1 provides；
Fig. 3 is Cr (VI) adsorbance curve graph that the embodiment of the present invention 3 provides.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of carrier hydrotalcites, including Al2O3Be supported on Al2O3On hydrotalcite.Wherein, described
Al2O3Preferably γ-Al2O3；The Al2O3Mesh number be preferably 30~80 mesh, more preferably 40~60 mesh.In the present invention,
The hydrotalcite is preferably magnalium hydrotalcite.
The calcining matter that carrier hydrotalcite provided by the invention obtains after being roasted has the Cr (VI) in waste water relatively strong
Adsorption capacity, and its water phase during processing is containing Cr (VI) waste water does not generate muddy suspended matter, and processed waste water is only
The separation of water phase and carrier hydrotalcite need to be achieved that by standing.The experimental results showed that：Carrier hydrotalcite provided by the invention
Calcining matter has good adsorption effect to the Cr (VI) in waste water；Compared to using calcined hydrotalcite as adsorbent, this is used
After the carrier hydrotalcite calcining matter provided is invented as adsorbent processing waste water containing chrome, the separation of water phase and adsorbent is more held
Easily.
The present invention provides a kind of preparation methods of carrier hydrotalcite, include the following steps：
A), by Al2O3It is immersed in the aqueous solution containing magnesium salts and urea；
B) Al after, impregnating2O3It is reacted in hydrothermal reaction kettle, obtains carrier hydrotalcite.
In preparation method provided by the invention, first by Al2O3It is immersed in the aqueous solution containing magnesium salts and urea.Wherein,
The Al2O3Preferably γ-Al2O3；The Al2O3Mesh number be preferably 30~80 mesh, more preferably 40~60 mesh.In the present invention
In, the Al2O3Before being impregnated, first activated.Wherein, the temperature of the activation is preferably 400~700 DEG C, specifically
It can be 450 DEG C, 500 DEG C, 550 DEG C, 600 DEG C or 650 DEG C；The time of the activation is preferably 2~6h.Concretely 3h, 4h or
5h；The activation carries out preferably in Muffle furnace.In the present invention, the magnesium salts is the soluble salt of magnesium, including but not limited to Mg
(NO3)2；Mg in the aqueous solution2+Total mol concentration with urea is preferably 0.1~2mol/L, concretely 0.1mol/L,
0.5mol/L, 1mol/L, 1.5mol/L or 2mol/L；Mg in the aqueous solution2+Molar ratio with urea is preferably 1：(2~4),
Concretely 1：3.In the present invention, the Al2O3Amount ratio with the aqueous solution is preferably (1~2) g：(20~30) mL,
More preferably 1.5g：25mL.In the present invention, the mode of the immersion preferably vacuumizes immersion；The time of the immersion is excellent
It is selected as 0.5~2h, concretely 1h or 1.5h.
After immersion, by the Al after immersion2O3It is fitted into hydrothermal reaction kettle and is reacted.Wherein, Al2O3Before immersion
The ratio of quality and hydrothermal reaction kettle volume is preferably (1~2) g：(30~70) mL, more preferably 1.5g：50mL；The hydro-thermal is anti-
It is preferably 2/3 to answer the compactedness of kettle；The temperature of the reaction is preferably 100~150 DEG C, concretely 110 DEG C, 120 DEG C, 130
DEG C or 140 DEG C；The time of the reaction is preferably 8~16h, concretely 9h, 10h, 11h, 12h, 13h, 14h or 15h.Reaction
After, solid obtained by the reaction is post-processed, carrier hydrotalcite is obtained.In the present invention, the specific packet of the post-processing
It includes：Solid obtained by the reaction is washed and dried successively.Wherein, the detergent of the washing is preferably deionized water；Institute
It is preferably 60~90 DEG C to state dry temperature, more preferably 70~80 DEG C；The time of the drying is preferably 12~48h, more excellent
It is selected as 24~36h.
Carrier hydrotalcite can be prepared using method provided by the invention, which includes Al2O3Be supported on
Al2O3The magnalium hydrotalcite thin layer on surface.The calcining matter that carrier hydrotalcite prepared by the present invention obtains after roasting is in waste water
Cr (VI) there is stronger adsorption capacity, and its water phase during processing is containing Cr (VI) waste water does not generate muddy suspension
Object, processed waste water need to only achieve that the separation of water phase and carrier hydrotalcite by standing.The experimental results showed that：The present invention carries
The carrier hydrotalcite calcining matter of confession has good adsorption effect to the Cr (VI) in waste water；Compared to using calcined hydrotalcite as
Adsorbent, using carrier hydrotalcite calcining matter provided by the invention as adsorbent processing waste water containing chrome after, water phase and adsorbent
Separation it is more easy.
A kind of carrier hydrotalcite calcining matter provided by the invention is by carrier hydrotalcite described in above-mentioned technical proposal or above-mentioned
Carrier hydrotalcite prepared by technical solution the method is made after roasting.
Carrier hydrotalcite calcining matter provided by the invention is made of the carrier hydrotalcite after roasting.Wherein, described
The temperature of roasting is preferably 400~550 DEG C；The time of the roasting is preferably 6~8h.
The present invention provides application of the carrier hydrotalcite calcining matter in processing waste water containing chrome described in above-mentioned technical proposal.
In application provided by the invention, directly the carrier hydrotalcite calcining matter is added in chromate waste water, carrier
Hydrotalcite calcining matter adsorbs the Cr VI in chromate waste water.Wherein, the content of Cr VI is preferred in the chromate waste water
For 10~1000mg/L, more preferably 50~500mg/L, most preferably 100~100mg/L；The carrier hydrotalcite calcining matter
Amount ratio with chromate waste water is preferably (1~5) g：(50~100) mL, more preferably (3~4) g：50mL.It carries out later quiet
It sets, obtains solid phase (the carrier hydrotalcite calcining matter for being adsorbed with Cr VI) and water phase.Wherein, the time of the standing is preferably 10
~100min, more preferably 30~50min.Solid phase is finally removed, realizes the removal to Cr VI in chromate waste water.
For the sake of becoming apparent from, it is described in detail below by following embodiment.
Embodiment 1
Prepare carrier hydrotalcite
(1) γ-Al of 1.50g are first weighed2O3Solid (40~60 mesh) places it into Muffle furnace at 550 DEG C in crucible
4h is activated, is transferred into when temperature drops to 200 DEG C in drier cooling for use；
(2) Mg (NO are weighed again3)2·6H2O and urea are transferred to constant volume in 250mL volumetric flasks after beaker, dissolving, this is molten
Mg in liquid2+/ urea mole be 1:3, Mg in solution2+It is 1mol/L with urea total concentration；
(3) by the Al after overactivation2O3Solid is mixed with 25mL steps (2) prepared solution, is put into after being placed in beaker
It carries out vacuumizing immersion in vacuum；
(4) beaker is taken out after impregnating 1h, soak is removed, solid is transferred to the hydrothermal synthesis reaction that volume is 50mL
In kettle, it is 2/3 that reaction kettle compactedness is added water into reaction kettle, and hydrothermal synthesis reaction kettle is put into baking oven at 120 DEG C instead
12h is answered, it is made fully to react；
(5) etc. it is opened after temperature of reaction kettle reduce, solid is repeatedly washed with deionized water until cleaning solution is neutral, it
Solid is transferred in clean surface plate afterwards, is put into 80 DEG C of dryings in baking oven and takes out afterwards for 24 hours, obtain carrier hydrotalcite；
(6) carrier hydrotalcite roasts 360min at 400 DEG C, obtains carrier neatly calcining matter.
Electronic Speculum (SEM) characterization is scanned to the carrier hydrotalcite of preparation, the results are shown in Figure 1, and Fig. 1 is implementation of the present invention
The SEM figures for the carrier hydrotalcite that example 1 provides.As seen in Figure 1, γ-Al2O3The flaky substance of Surface Creation rule.
X diffraction (XRD) is carried out to the powder of the carrier hydrotalcite surface of preparation to characterize, the results are shown in Figure 2, and Fig. 2 is this
The XRD diagram for the carrier hydrotalcite that inventive embodiments 1 provide, a is commercially available magnalium hydrotalcite in Fig. 2, and b is load manufactured in the present embodiment
Body hydrotalcite surface powder, c are γ-Al2O3.As seen in Figure 2, the surface powder of carrier hydrotalcite manufactured in the present embodiment
At 11.6 ° in XRD diagram, 23.7 °, 35.1 °, 60.1 °, 62.4 ° of characteristic peaks for having significantly appeared magnalium hydrotalcite pass through at end
Fig. 2 is it can be proved that γ-Al2O3The substance of Surface Creation is magnalium hydrotalcite.
Embodiment 2
Prepare carrier hydrotalcite
(1) γ-Al of 1.50g are first weighed2O3Solid (40~60 mesh) places it into Muffle furnace at 550 DEG C in crucible
4h is activated, is transferred into when temperature drops to 200 DEG C in drier cooling for use；
(2) Mg (NO are weighed again3)2·6H2O and urea are transferred to constant volume in 250mL volumetric flasks after beaker, dissolving, this is molten
Mg in liquid2+/ urea mole be 1:3, Mg in solution2+It is 0.5mol/L with urea total concentration；
(3) by the Al after overactivation2O3Solid is mixed with 25mL steps (2) prepared solution, is put into after being placed in beaker
It carries out vacuumizing immersion in vacuum；
(4) beaker is taken out after impregnating 1h, soak is removed, solid is transferred to the hydrothermal synthesis reaction that volume is 50mL
In kettle, it is 2/3 that reaction kettle compactedness is added water into reaction kettle, and hydrothermal synthesis reaction kettle is put into baking oven at 120 DEG C instead
12h is answered, it is made fully to react；
(5) etc. it is opened after temperature of reaction kettle reduce, solid is repeatedly washed with deionized water until cleaning solution is neutral, it
Solid is transferred in clean surface plate afterwards, is put into 80 DEG C of dryings in baking oven and takes out afterwards for 24 hours, obtain carrier hydrotalcite；
(6) carrier hydrotalcite roasts 360min at 400 DEG C, obtains carrier neatly calcining matter.
Embodiment 3
Prepare carrier hydrotalcite
(1) γ-Al of 1.50g are first weighed2O3Solid (40~60 mesh) places it into Muffle furnace at 550 DEG C in crucible
4h is activated, is transferred into when temperature drops to 200 DEG C in drier cooling for use；
(2) Mg (NO are weighed again3)2·6H2O and urea are transferred to constant volume in 250mL volumetric flasks after beaker, dissolving, this is molten
Mg in liquid2+/ urea mole be 1:3, Mg in solution2+It is 0.1mol/L with urea total concentration；
(3) by the Al after overactivation2O3Solid is mixed with 25mL steps (2) prepared solution, is put into after being placed in beaker
It carries out vacuumizing immersion in vacuum；
(4) beaker is taken out after impregnating 1h, soak is removed, solid is transferred to the hydrothermal synthesis reaction that volume is 50mL
In kettle, it is 2/3 that reaction kettle compactedness is added water into reaction kettle, and hydrothermal synthesis reaction kettle is put into baking oven at 120 DEG C instead
12h is answered, it is made fully to react；
(5) etc. it is opened after temperature of reaction kettle reduce, solid is repeatedly washed with deionized water until cleaning solution is neutral, it
Solid is transferred in clean surface plate afterwards, is put into 80 DEG C of dryings in baking oven and takes out afterwards for 24 hours, obtain carrier hydrotalcite；
(6) carrier hydrotalcite roasts 360min at 400 DEG C, obtains carrier neatly calcining matter.
Embodiment 4
The effect of different carriers hydrotalcite calcining matter processing waste water containing chrome
Carrier hydrotalcite calcining matter is made in 3g Examples 1 to 3 to be added to 50mL chromate waste waters (Cr (VI) content is
In 100.0mg/L), Cr (VI) adsorbance of carrier hydrotalcite calcining matter is tested at regular intervals at room temperature, as a result
As shown in figure 3, Fig. 3 is Cr (VI) adsorbance curve graph that the embodiment of the present invention 3 provides.In Fig. 3, a is load prepared by embodiment 3
Body hydrotalcite calcining matter, b are carrier hydrotalcite calcining matter prepared by embodiment 2, and c is carrier hydrotalcite roasting prepared by embodiment 1
Burn object.As seen in Figure 3, the carrier hydrotalcite calcining matter that prepared by Examples 1 to 3 has the Cr (VI) in waste water good
Adsorption effect.
Embodiment 5
It is tested with the separating effect of water phase
Take each 50mL of Cr (VI) solution of 100mg/L respectively with the commercially available magnalium hydrotalcite calcining matter powder of 3g (200 mesh), 3g
It is prepared by the carrier hydrotalcite calcining matter and 3g embodiments 3 of carrier hydrotalcite calcining matter, the preparation of 3g embodiments 2 prepared by embodiment 1
Carrier hydrotalcite calcining matter carry out adsorption experiment.
Experiment condition：Reaction temperature is 35 DEG C and is shaken 1 hour in same thermostat water bath, and 30 points are stood after the completion of reaction
Clock takes supernatant liquid 40mL to be filtered to room temperature, and filter paper is separated by solid-liquid separation using the quantitative analysis filter paper of Φ 9, has been filtered
After put into constant weight crucible 24 hours dry at 80 DEG C, be put into 400 DEG C of roastings in Muffle furnace and weigh for 1 hour, to ensure to test number
According to reliability, carry out three groups of parallel laboratory tests, experimental result is as shown in table 1：
Weight after the burning of 1 filter paper of table
It can be seen that the weight after embodiment group filter paper burns by the data in table 1 and be significantly lower than commercially available hydrotalcite, this
Illustrate that suspension content is less in liquid phase using after embodiment group carrier hydrotalcite calcining matter processing waste water.Therefore compared to
Hydrotalcite calcining matter as adsorbent, using experimental group carrier hydrotalcite calcining matter as adsorbent processing waste water containing chrome after, water
It is mutually more easy with the separation of adsorbent.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of carrier hydrotalcite, including Al2O3Be supported on Al2O3On hydrotalcite.
2. carrier hydrotalcite according to claim 1, which is characterized in that the Al2O3Mesh number be 30~80 mesh.
3. a kind of preparation method of carrier hydrotalcite, includes the following steps：
A), by Al2O3It is immersed in the aqueous solution containing magnesium salts and urea；
B) Al after, impregnating2O3It is reacted in hydrothermal reaction kettle, obtains carrier hydrotalcite.
4. preparation method according to claim 1, which is characterized in that in step a), Mg in the aqueous solution2+With urea
Total mol concentration is 0.1~2mol/L.
5. preparation method according to claim 4, which is characterized in that in step a), Mg in the aqueous solution2+With urea
Molar ratio is 1：(2~4).
6. preparation method according to claim 1, which is characterized in that in step a), the Al2O3With the aqueous solution
Amount ratio is (1~2) g：(20~30) mL.
7. preparation method according to claim 1, which is characterized in that in step a), the mode of the immersion is to vacuumize
It impregnates；The time of the immersion is 0.5~2h.
8. preparation method according to claim 1, which is characterized in that in step b), the temperature of the reaction is 100~
150℃；The time of the reaction is 8~16h.
9. a kind of carrier hydrotalcite calcining matter, by claim 1~2 any one of them carrier hydrotalcite or claim 3~8
Carrier hydrotalcite prepared by any one the method is made after roasting.
10. application of the carrier hydrotalcite calcining matter in processing waste water containing chrome described in claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710104774.2A CN108499519A (en) | 2017-02-24 | 2017-02-24 | A kind of carrier hydrotalcite and preparation method thereof and carrier hydrotalcite calcining matter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710104774.2A CN108499519A (en) | 2017-02-24 | 2017-02-24 | A kind of carrier hydrotalcite and preparation method thereof and carrier hydrotalcite calcining matter |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972631A (en) * | 2010-09-17 | 2011-02-16 | 北京化工大学 | Multilevel-structure hydrotalcite adsorbent and preparation method thereof |
| CN102211972A (en) * | 2010-04-06 | 2011-10-12 | 中国石油化工股份有限公司 | Application of hydrotalcite-based supported catalyst to preparation of isobutene from isobutane by dehydrogenating |
-
2017
- 2017-02-24 CN CN201710104774.2A patent/CN108499519A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211972A (en) * | 2010-04-06 | 2011-10-12 | 中国石油化工股份有限公司 | Application of hydrotalcite-based supported catalyst to preparation of isobutene from isobutane by dehydrogenating |
| CN101972631A (en) * | 2010-09-17 | 2011-02-16 | 北京化工大学 | Multilevel-structure hydrotalcite adsorbent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李顺凯等: ""γ-Al2O3固载水滑石的原位制备及其对Cr(Ⅵ)的吸附性能研究"", 《沈阳化工大学学报》 * |
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