CN110227420A - A kind of preparation method of boehmite modified cation adsorbent - Google Patents

A kind of preparation method of boehmite modified cation adsorbent Download PDF

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CN110227420A
CN110227420A CN201910448796.XA CN201910448796A CN110227420A CN 110227420 A CN110227420 A CN 110227420A CN 201910448796 A CN201910448796 A CN 201910448796A CN 110227420 A CN110227420 A CN 110227420A
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boehmite
esterification
monomer
double bond
acid
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黄征青
程正发
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Hubei University of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26Synthetic macromolecular compounds
    • B01J20/264Synthetic macromolecular compounds derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/3085Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/285Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F259/00Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
    • C08F259/02Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing chlorine
    • C08F259/04Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing chlorine on to polymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F259/00Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
    • C08F259/08Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F271/00Macromolecular compounds obtained by polymerising monomers on to polymers of nitrogen-containing monomers as defined in group C08F26/00
    • C08F271/02Macromolecular compounds obtained by polymerising monomers on to polymers of nitrogen-containing monomers as defined in group C08F26/00 on to polymers of monomers containing heterocyclic nitrogen
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/06Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F292/00Macromolecular compounds obtained by polymerising monomers on to inorganic materials

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  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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Abstract

The invention discloses a kind of preparation methods of boehmite modified cation adsorbent, belong to field of compound material.The preparation method includes first being esterified with organic acid containing double bonds to boehmite, obtain double bond containing esterification boehmite, then initiator is added in water, monomer (contains carboxyl, sulfonic monomer), the polymer microballoon of a small amount of crosslinking agent and esterification boehmite or the boehmite containing esterification, it is graft-polymerized under nitrogen protection to double bond containing esterification boehmite, obtain boehmite modified cation adsorbent, the adsorbent can pass through the metal cation in ion exchange or complexing quick adsorption water body, cationic surfactant or the dye of positive ion etc., with large amount of adsorption, the rate of adsorption is fast, the features such as being easily recycled with regeneration.

Description

A kind of preparation method of boehmite modified cation adsorbent
Technical field
The invention belongs to field of compound material, and in particular to a kind of preparation method of boehmite modified cation adsorbent.
Background technique
Activated alumina is a kind of common adsorbent, and in order to improve its adsorption capacity, Du Wen etc. is modified using copper chloride Aluminium oxide adsorbs demercuration ability to improve it;Also sodium hydroxide is used to go fluorine ability to alumina modified to improve;Also it adopts With calcium, magnesium-modified aluminium oxide, to improve the removal ability to fluorine and humic acid;Also its using the modified raising of manganese removes fluorine Removing solid capacity;Also it uses phosphotungstic acid for modifying agent, support type alumina adsorbant removing wax tailings is prepared for using infusion process Middle nitride is also had and is introduced using coupling agent (silane coupling agent, titanate coupling agent, aluminate coupling agent) by etherification reaction Then double bond is grafted and is modified to aluminium oxide.
Boehmite (γ-Al00H) contains a large amount of hydroxyl, itself has certain adsorption capacity, in recent years, Many researchers pair The modification of boehmite has carried out a large amount of research, as Wu Xiu bravely prepares boehmite powder using esterification assisting alcohol-hydrothermal method: should Application (application number: the 201220319265.4) water for generating esterification, for the hydrolysis of urea, and then in hydrothermal condition Under, it reacts with aluminium salt, while obtaining esterification product, obtains that granularity is small and uniform boehmite powder;With this Meanwhile the consumption of water, the balanced sequence of esterification can also be promoted, be conducive to shorten reaction time of esterification, a reaction week In phase, organic esterified product and inorganic ultrafine powder can be obtained simultaneously, is conducive to the comprehensive utilization of energy, energy-saving effect is bright It is aobvious;For another example by the activity and chloroacetate reaction of sulfydryl in 5- amido-1,3,4-thiadiazoles -2- mercaptan, prepare end group is beam space The corrosion inhibiter of carboxylic acid group.Then corrosion inhibiter is bonded by esterification with the hydroxyl in boehmite, is grafted to boehmite PH sensitivity release type inhibition antirust filler is made in surface.
In general, containing carboxyl, sulfonic polymer such as polyacrylic acid, polyphenyl sodium sulfonate to the dye of positive ion in water body, Cation surface activating and metal ion have very strong adsorption capacity, but they are dissolved in water, cannot be very when using as adsorbent Good recycling, and boehmite is weak to cation adsorbing capabilities, not soluble in water;By the method that is esterified, is grafted by two Person is firmly combined together the shortcomings that both can overcoming, and plays its advantage, can prepare can recycle it is new and effective Adsorbent.
Summary of the invention
A kind of boehmite modified cation absorption that the purpose of the present invention is design aiming at the problem that background technique proposes The preparation method of agent, this method obtains boehmite and organic acid reaction containing double bond to be esterified boehmite containing double bond, then to containing double The esterification boehmite of key is graft-polymerized, the boehmite modified cation adsorbent of preparation can be used for adsorbing in water sun from Sub- dyestuff, cationic surfactant, Pb2+、Ni2+、Cr3+、Au3+、Cu2+、Cd2+, Hg2+,Ca2+,Mg2+, Fe3+, Ag+,Zn2+, Al3+Equal cations.
Inventor passes through a large number of experiments and unremitting effort, is finally obtained following scheme:
A kind of preparation method of boehmite modified cation adsorbent, includes the following steps:
(1) boehmite be first added to the water or the water containing a certain amount of hydroquinone in or be added dimethylbenzene in carry out at dispersion Reason, double bond containing organic acid is then added and carries out esterification, obtains double bond containing esterification boehmite, esterification condition Are as follows: aqueous solution is stirred to react 10-72 hours or in dimethylbenzene, 138-145 DEG C, reflux 10-72 hours at 70-100 DEG C of temperature;
The molar ratio of the boehmite and the organic acid containing double bond is 1:1-1:4;
The double bond containing organic acid is acrylic acid, methacrylic acid, butene dioic acid, styrene sulfonic acid, trans--styrene Any one of acetic acid (4- phenyl -3-butenoic acid);
Concentration of the boehmite in water or in the water containing a certain amount of hydroquinone or in dimethylbenzene is 1-8wt%;
(2) initiator, monomer, crosslinking agent and esterification boehmite are added in water, to containing double bond under nitrogen protection, stirring Esterification boehmite be graft-polymerized, reaction temperature be 50-80 DEG C, reaction time 3-15 hour, then through centrifugation, mistake Filter, washing are dried in vacuo to get boehmite modified cation adsorbent is arrived;
Monomer concentration is 2-10wt% in the aqueous solution, and initiator additive amount is the 0.5-2wt% of monomer;Crosslinking agent is used Amount is the 0.5-3wt% of monomer, and the mass ratio for being esterified boehmite and monomer is 1:1-1:10.
The initiator includes any one of potassium peroxydisulfate, sodium peroxydisulfate and ammonium persulfate;
The monomer is containing carboxyl, sulfonic monomer, is specifically acrylic acid, propylene containing carboxyl, sulfonic monomer Sour sodium, methacrylic acid, Sodium methacrylate, sodium p styrene sulfonate, butene dioic acid it is any one or more;
The crosslinking agent that obtains is any one of ethylene glycol, diethylenetriamine.
Preferably, a kind of preparation method of boehmite modified cation adsorbent as described above, in the step (2) Being esterified boehmite can also be the polymer magnetic micro-sphere of the boehmite containing esterification.
Preferably, a kind of preparation method of boehmite modified cation adsorbent as described above, described is vigorous containing esterification The polymer magnetic micro-sphere of nurse stone the preparation method comprises the following steps: by polymer, ferroso-ferric oxide, double bond containing esterification boehmite, solvent, Pore-foaming agent mixing, is prepared using immersion precipitation phase inversion process;
The polymer is any one of polyvinyl chloride, Kynoar, polysulfones;
The pore-foaming agent includes any one of polyethylene glycol and polyvinylpyrrolidone;
The solvent is dimethylformamide, dimethyl acetamide, dimethyl sulfoxide, any in N-Methyl pyrrolidone Kind.
The present invention is as follows using the principle of boehmite and the organic acid reaction containing double bond: contain great amount of hydroxy group on boehmite, with Carboxyl in organic acid containing double bond reacts, and dehydration obtains double bond containing ester.
Compared with prior art, advantages of the present invention are as follows:
1, by the esterification of boehmite and the organic acid containing double bond, double bond containing active monomer is secured by covalent bond Ground is incorporated on boehmite, and then can easily carry out subsequent graft modification, to overcome the profit of hydrophobic adsorbent The problems such as wet problem or the water solubility of hydrophilic adsorbent.
2, boehmite modified adsorbent prepared by the present invention not only contains hydroxyl, also contains a large amount of carboxyl or sulfonic group, Adsorbent soluble easily in water, is on the other hand fixed on boehmite not soluble in water by the adsorption capacity on the one hand improving boehmite On, it can recycle very well.This boehmite modified adsorbent can be by ion exchange or complexing quick adsorption water body Metal cation, cationic surfactant or the dye of positive ion etc., have that large amount of adsorption, the rate of adsorption are fast, are easily recycled The features such as with regeneration.
3, the cation adsorbent prepared by the present invention can be used for adsorbing the dye of positive ion, cation surface activating in water Agent, Pb2+、Ni2+、Cr3+、Au3+、Cu2+、Cd2+, Hg2+,Ca2+,Mg2+, Fe3+, Ag+,Zn2+,Al3+Cation.
Detailed description of the invention
Fig. 1 is the schematic diagram that boehmite is reacted with acrylic acid.
Specific embodiment
Below in conjunction with attached drawing, embodiments of the present invention is further illustrated, to make the purpose of the present invention, technical solution and excellent Point is clearer, below technical solution in the present invention be clearly and completely described, it is clear that described embodiment is this Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of preparation method of boehmite modified cation adsorbent, this method comprises the following steps:
(1) 6.49g sodium hydroxide is added to the sodium hydroxide solution that 3.24M is made into 50 milliliters of water, then violent Sodium hydroxide is added dropwise with 2.94 milliliters of speed per minute into the aluminum chloride aqueous solution that 30ml aluminium ion concentration is 1.78M under stirring Solution is added dropwise completely for about 17 minutes, then ultrasound 3 hours at 25 DEG C, and precipitating filtering washing, finally baking 4 is small at 220 DEG C When, obtain boehmite.
(2) it takes 50 grams of boehmites (0.83mol) to be added in 800 milliliters of distilled water to disperse, and is ultrasonically treated, 5 points 3 grams of hydroquinones are added after clock;Then it is slowly added to methacrylic acid (154g, 1.8mol) at room temperature, under 70 DEG C of stirrings Carry out reaction in 20 hours, solid matter with deionized water washing, finally in a vacuum 50 DEG C drying 20 hours be to be esterified Boehmite.
(3) with 10g polyvinyl chloride, 5g ferroso-ferric oxide, 10g esterification boehmite, 5g polyethylene glycol and 70g dimethylacetamide Amine is added drop-wise to the polymer magnetic for obtaining the boehmite containing esterification for gel 24 hours in distilled water in 60 DEG C of stirrings, 12 hours wiring solution-formings Property microballoon, drains to be put into ethyl alcohol and impregnate 1 hour, air drying.
(4) glycol water that acrylic acid and 0.05wt% containing 3wt% are prepared with 500 milliliters of aqueous solutions, leads to nitrogen 15 minutes, the polymer microballoon and 0.1g potassium peroxydisulfate of boehmite of the 15g containing esterification, then logical nitrogen 10 minutes are added, stir, It reacts 4 hours at 70-75 DEG C, then washes, boehmite modified cation microsphere adsorbing agent, performance are dried to obtain at 50 DEG C It is shown in Table 1.
Embodiment 2
A kind of preparation method of boehmite modified cation adsorbent, this method comprises the following steps:
(1) 10.2g sodium metaaluminate and 28.8g urea are dissolved in the deionized water of 1L, then pipette 30mL meta-aluminic acid Sodium/urea mixed solution is placed in the hydrothermal reaction kettle of 50mL, carries out hydro-thermal reaction for 24 hours in 160 DEG C of baking oven, cooling, is washed It washs filtration drying and obtains boehmite.
(2) it disperses 10.0g boehmite in 250mL dimethylbenzene, adds 48g acrylic acid, mixture 138- in dimethylbenzene 145 DEG C are flowed back 72 hours, and vacuum distillation removal toluene washs solid removal impurity with ether, and it is vigorous that white esterification is obtained after dry Nurse stone powder.
(3) 20.6g sodium p styrene sulfonate and 0.2g diethylenetriamine and 5g is added to be esterified boehmite powder into the water of 500mL End, leads to nitrogen 15 minutes, then plus 0.1g potassium peroxydisulfate and logical nitrogen, stirring, react 5 hours at 70-80 DEG C, then washing with Ethanol washing is dried to obtain boehmite modified cation adsorbent at 80 DEG C.
Embodiment 3
A kind of preparation method of boehmite modified cation adsorbent, this method comprises the following steps:
(1) take 6.0g business boehmite, after adding 250mL water dispersion, then plus 11.6g butene dioic acid, agitating and heating is in diformazan It flows back 24 hours for 138-145 DEG C in benzene, filtering, ethanol washing is dried to obtain esterification boehmite at 80 DEG C.
(2) with 12g Kynoar, 5g ferroso-ferric oxide, 5g esterification boehmite, 3g polyvinylpyrrolidone and 75g bis- Then first sulfoxide is added drop-wise to gel 24 hours in distilled water in 60 DEG C of stirrings, 12 hours wiring solution-formings and obtains polymer microballoon, drip Dry be put into ethyl alcohol is impregnated 1 hour, and air drying obtains esterification boehmite polymer microballoon.
(3) sodium p styrene sulfonate that acrylic acid and 3wt% containing 3wt% are prepared with 500 milliliters of aqueous solutions, adds 0.7g second Glycol leads to nitrogen 15 minutes, and the polymer microballoon and 0.2g ammonium persulfate of 10g boehmite containing esterification, then logical nitrogen gas stirring is added, It reacts 4 hours at 60-70 DEG C, then washes, boehmite modified cation microsphere adsorbing agent is dried to obtain at 80 DEG C.
The sample that we prepare embodiment 1 is determined the absorption property of its cation, is specifically shown in Table 1.
The absorption property of table 1, boehmite modified cation adsorbent

Claims (3)

1. a kind of preparation method of boehmite modified cation adsorbent, it is characterised in that: this method comprises the following steps:
(1) boehmite be first added to the water or the water containing a certain amount of hydroquinone in or be added dimethylbenzene in carry out decentralized processing, so After double bond containing organic acid be added carry out esterification, obtain double bond containing esterification boehmite, esterification condition are as follows: temperature At 70-100 DEG C aqueous solution be stirred to react 10-72 hours or in dimethylbenzene, 138-145 DEG C reflux 10-72 hours;
The molar ratio of the boehmite and the organic acid containing double bond is 1:1-1:4;
The double bond containing organic acid is acrylic acid, methacrylic acid, butene dioic acid, styrene sulfonic acid, trans--phenylethyl acetate Any one of (4- phenyl -3-butenoic acid);
Concentration of the boehmite in water or in the water containing a certain amount of hydroquinone or in dimethylbenzene is 1-8wt%;
(2) initiator, monomer, crosslinking agent and esterification boehmite are added in water, obtains mixed aqueous solution, in nitrogen protection, stirs Mix it is lower be graft-polymerized to double bond containing esterification boehmite, reaction temperature be 50-80 DEG C, reaction time 3-15 hour, so Boehmite modified cation adsorbent is arrived by being centrifuged, being filtered, washed, be dried in vacuo afterwards;
Monomer concentration is 2-10wt% in the mixed aqueous solution, and initiator additive amount is the 0.5-2wt% of monomer;Dosage of crosslinking agent For the 0.5-3wt% of monomer, the mass ratio for being esterified boehmite and monomer is 1:1-1:10;
The initiator is any one of potassium peroxydisulfate, sodium peroxydisulfate and ammonium persulfate;
The monomer be containing carboxyl, sulfonic monomer, specifically containing carboxyl, sulfonic monomer be acrylic acid, sodium acrylate, Methacrylic acid, Sodium methacrylate, sodium p styrene sulfonate, butene dioic acid are any one or more of;
The crosslinking agent is any one of ethylene glycol, diethylenetriamine.
2. a kind of preparation method of boehmite modified cation adsorbent as described in claim 1, it is characterised in that: the step Suddenly the esterification boehmite in (2) can also be the polymer magnetic micro-sphere of the boehmite containing esterification.
3. a kind of preparation method of boehmite modified cation adsorbent as claimed in claim 2, it is characterised in that: it is described The polymer magnetic micro-sphere of the boehmite containing esterification the preparation method comprises the following steps: by polymer, ferroso-ferric oxide, the vigorous nurse of double bond containing esterification Stone, solvent, pore-foaming agent mixing, are prepared using immersion precipitation phase inversion process;
The polymer is any one of polyvinyl chloride, Kynoar, polysulfones;
The pore-foaming agent is any one of polyethylene glycol and polyvinylpyrrolidone;
The solvent is dimethylformamide, in dimethyl acetamide, dimethyl sulfoxide, N-Methyl pyrrolidone
It is any.
CN201910448796.XA 2018-12-13 2019-05-27 A kind of preparation method of boehmite modified cation adsorbent Pending CN110227420A (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN112316910A (en) * 2020-10-28 2021-02-05 东北大学 Method for preparing adsorbent by graft modification of waste boric sludge sulfonic acid group
CN112691637A (en) * 2020-12-22 2021-04-23 广东电网有限责任公司电力科学研究院 Adsorbent for transformer oil and preparation method thereof
CN113735151A (en) * 2021-09-24 2021-12-03 中铝郑州有色金属研究院有限公司 Low-iron boehmite and preparation method and application thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112316910A (en) * 2020-10-28 2021-02-05 东北大学 Method for preparing adsorbent by graft modification of waste boric sludge sulfonic acid group
CN112691637A (en) * 2020-12-22 2021-04-23 广东电网有限责任公司电力科学研究院 Adsorbent for transformer oil and preparation method thereof
CN113735151A (en) * 2021-09-24 2021-12-03 中铝郑州有色金属研究院有限公司 Low-iron boehmite and preparation method and application thereof

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Application publication date: 20190913

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