CN105413751B - A kind of preparation method of montmorillonite/polyaniline complex solid base catalyst - Google Patents

A kind of preparation method of montmorillonite/polyaniline complex solid base catalyst Download PDF

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CN105413751B
CN105413751B CN201510748492.7A CN201510748492A CN105413751B CN 105413751 B CN105413751 B CN 105413751B CN 201510748492 A CN201510748492 A CN 201510748492A CN 105413751 B CN105413751 B CN 105413751B
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montmorillonite
base catalyst
solid base
complex solid
polyaniline complex
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CN105413751A (en
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袁斌
张爱琴
唐星华
薛珂珂
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Nanchang Hangkong University
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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
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/19Catalysts containing parts with different compositions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06Halogens; Compounds thereof
    • B01J27/128Halogens; Compounds thereof with iron group metals or platinum group metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/06Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/26Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
    • B01J31/28Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of the platinum group metals, iron group metals or copper
    • B01J31/30Halides

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  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

The invention discloses a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst:Use FeCl3Carried out between montmorillonite layer after intercalation, then forerunner's product is prepared with HCl, aniline, the polyaniline that montmorillonite is combined finally is changed into the polyaniline of eigenstate using ethylene glycol, sodium acetate.The preparation process of montmorillonite of the present invention/polyaniline complex solid base catalyst is simple, prepare it is with low cost, the features such as with good catalytic activity.

Description

A kind of preparation method of montmorillonite/polyaniline complex solid base catalyst
Technical field
The present invention relates to a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst.
Background technology
Montmorillonite is a kind of natural layer silicon aluminate crystal of nanoscale, with stronger surface electronegativity, compares table Area is big, adsorptivity is strong, water swelling, suspension the features such as, have a laudatory title of " omnipotent clay mineral ", distributed in nature extensively, It is cheap, it is safe and harmless.001 crystal face of montmorillonite is very small, passes through cation exchange, it would be desirable to metal ion exchanged enter Enter interlayer, intercalation compound can be formed.
Polyaniline is considered as most to have one of conducting polymer of actual application prospect.Its anti-corrosion of metal, electromagnetic shielding, Application in terms of gas sensor just moves towards the industrialization.Due to PANI have prepare cost it is low, insoluble in most of organic molten The characteristics of agent and water, it shows incomparable excellent catalysis in organic transformation reaction as catalyst or catalyst carrier Performance.
Base catalyzed reactions are one of important reactions of chemical industry, and base catalyzed reactions include double bond isomerization reaction, esterification Reaction, ester exchange reaction, Knoevenagel condensation reactions and Michael addition reactions etc., Knoevenagel contractings therein The dehydration condensation that reaction is carbonyls and activity methene compound is closed, for the formation of carbon-carbon double bond, this is anti- It should be widely used in terms of baroque fine chemicals preparation.
Compared with liquid alkali catalyst, solid base catalyst has the following advantages that:Catalyst is easily from reactant mixture Separate;High selectivity, high catalytic activity, reaction condition is gentle;Post catalyst reaction regenerating easily, can be recycled;Ring Border is friendly, it is to avoid use polar solvent or consisting of phase-transferring agent, corrosion-free to equipment;Reaction process process continuous can be made, raising is set Standby production capacity;It can be applied in high temperature even gas phase reaction;Solid base catalyst is without C-C key fracture energies, under high temperature Reaction will not cause carbon distribution.Therefore the friendly solid base catalyst of development environment is significant.
The content of the invention
It is an object of the invention to provide a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst.
To realize the object of the invention, the technical solution adopted in the present invention is as follows:
A kind of preparation method of montmorillonite/polyaniline complex solid base catalyst, methods described is:Use FeCl3It is de- covering Carried out between rock layers after intercalation, then with HCl, aniline prepare forerunner's product, finally will be with montmorillonite using ethylene glycol, sodium acetate Compound polyaniline changes into the polyaniline of eigenstate, and the montmorillonite/polyaniline complex solid base catalyst is made.
Further, the method for the invention is carried out as follows:
(1) by 10 ~ 60gFeCl3, 1 ~ 15g montmorillonites, with 1 ~ 1.3L deionized water dissolving, 50 ~ 60 DEG C of 1 ~ 5h of stirring, Filtering, dries, obtains intercalation FeCl3Montmorillonite;
(2) the intercalation FeCl obtained in step (1) is taken3Montmorillonite 2 ~ 3g, 1 ~ 2.2mlHCl, 50 ~ 60ml deionizations are water-soluble Solution is in there-necked flask, and 50 ~ 65 DEG C of temperature control pours into 1 ~ 6ml aniline in three-necked flask, after 2 ~ 3h of reaction, filters, washing, 50 ~ 65 DEG C are dried to obtain montmorillonite polyaniline complex solid base catalyst presoma;
(3) by the montmorillonite polyaniline complex solid base catalyst presoma obtained in 1.2 ~ 1.8g steps (2), 1 ~ 4g second Sour sodium, 10 ~ 60ml ethylene glycol is incorporated with the water heating kettle of polytetrafluoroethyllining lining after stirring, 373 ~ 483k constant temperature 1 ~ 9h, takes out product, filters, and dries, obtains montmorillonite/polyaniline complex solid base catalyst.
In the step (1), the FeCl3Quality is 50 ~ 60g.
In the step (1), the mixing time is 3 ~ 5h.
In the step (1), deionized water is with 1 ~ 1.2L.
In the step (2), the HCl consumptions are 2 ~ 2.2ml.
In the step (2), the aniline consumption is 5 ~ 6ml.
In the step (3), the temperature is 473 ~ 483k.
In the step (3), the constant temperature time is 8 ~ 9h.
Montmorillonite of the present invention/polyaniline complex solid base catalyst and preparation method thereof takes full advantage of montmorillonite As the catalytic performance of the excellent performance of carrier material, and polyaniline, so as to improve the base catalysis performance of polyaniline.The present invention The montmorillonite of offer/polyaniline complex solid base catalyst has preferable base catalysis performance.
Brief description of the drawings
Fig. 1 is that embodiment 1 prepares ultraviolet-visible spectrogram in montmorillonite/polyaniline complex solid base catalyst.Wherein A It is the UV-visible spectrum of montmorillonite, B is the UV-visible spectrum of montmorillonite/polyaniline complex solid base catalyst.
Fig. 2 is that embodiment 1 prepares small angle X-ray diffraction in montmorillonite/polyaniline complex solid base catalyst(XRD)Figure Spectrum.Wherein A is the small angle XRD spectrum of montmorillonite, and B is the small angle XRD spectrum of montmorillonite/polyaniline complex solid base catalyst.
Fig. 3 is that montmorillonite/polyaniline complex solid base catalyst prepared by embodiment 1 reacts in catalysis Knoevenagel In apply mechanically active figure.
Specific embodiment
Illustrated embodiment below in conjunction with the accompanying drawings, the invention will be further described.
Embodiment 1
By 52.20gFeCl3, 10g montmorillonites, with 1L deionized water dissolving, 60 DEG C of stirring 4h are filtered, are dried, obtain Montmorillonite B;By 2.65g montmorillonite B, 2mlHCl, 50ml deionized water dissolvings in there-necked flask, 60 DEG C of temperature control, by 5ml benzene Amine is poured into three-necked flask, after reaction 2h, is filtered, washing, 60 DEG C are dried to obtain product C, by 1.4g C, 3.6g sodium acetates, 50ml ethylene glycol is incorporated with the water heating kettle of polytetrafluoroethyllining lining after stirring, in 473k constant temperature 8h, takes out product, mistake Filter, dries, obtains montmorillonite/polyaniline complex solid base catalyst.
Embodiment 2
By 50.20gFeCl3, 8g montmorillonites, with 1.1L deionized water dissolving, 60 DEG C of stirring 4.5h are filtered, are dried, obtain To montmorillonite B;By 2.8g montmorillonite B, 2.1mlHCl, 55ml deionized water dissolvings in there-necked flask, 60 DEG C of temperature control will 5.5ml aniline is poured into three-necked flask, after reaction 2.5h, is filtered, washing, 60 DEG C are dried to obtain product C, by 1.5g C, 3.8g Sodium acetate, 55ml ethylene glycol is incorporated with the water heating kettle of polytetrafluoroethyllining lining after stirring, in 478k constant temperature 8.5h, is taken out Product, is filtered, and is dried, is obtained montmorillonite/polyaniline complex solid base catalyst.
Embodiment 3
By 54.20gFeCl3, 11g montmorillonites, with 1.2L deionized water dissolving, 60 DEG C of stirring 5h are filtered, are dried, obtain To montmorillonite B;By 3g montmorillonite B, 2.2mlHCl, 60ml deionized water dissolvings in there-necked flask, 60 DEG C of temperature control, by 6ml Aniline is poured into three-necked flask, after reaction 3h, is filtered, washing, 60 DEG C are dried to obtain product C, by 1.6g C, 4g sodium acetates, 60ml ethylene glycol is incorporated with the water heating kettle of polytetrafluoroethyllining lining after stirring, in 483k constant temperature 9h, takes out product, mistake Filter, dries, obtains montmorillonite/polyaniline complex solid base catalyst.
The UV analyses of 1 montmorillonite of annex/polyaniline complex solid base catalyst:
As shown in figure 1, montmorillonite-loaded polyaniline has a strong absworption peak at 360nm, be phenyl ring in polyaniline chain π- π * transition.Absworption peak at 610nm represents the presence of quinone ring.It is polyaniline in eigenstate to illustrate montmorillonite-loaded polyaniline.
The small angle XRD analysis of 2 montmorillonites of annex/polyaniline complex solid base catalyst:
As shown in Fig. 2 as can be seen from the figure after montmorillonite-loaded polyaniline, the angle of diffraction 2 of its crystal face (001)Diminish, Corresponding interlamellar spacing d (001) increases, illustrate that montmorillonite supports big by polyaniline.
3 montmorillonites of annex/polyaniline complex solid base catalyst applies mechanically catalytic activity:
As shown in figure 3, montmorillonite/polyaniline complex solid alkali has good base catalysis activity, while this catalyst Activity does not have obvious reduction after utilization is repeated 3 times.

Claims (7)

1. a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst, it is characterised in that methods described is:Use FeCl3 Carried out between montmorillonite layer after intercalation, then forerunner's product is prepared with HCl, aniline, will finally covered using ethylene glycol, sodium acetate The compound polyaniline of de- stone changes into the polyaniline of eigenstate, and the montmorillonite/polyaniline complex solid base catalyst is made;
Methods described is carried out as follows:
(1) by 10~60g FeCl3, 1~15g montmorillonites, with 1~1.3L deionized water dissolving, 50~60 DEG C of 1~5h of stirring, Filtering, dries, obtains intercalation FeCl3Montmorillonite;
(2) the intercalation FeCl obtained in step (1) is taken3Montmorillonite 2~3g, 1~2.2ml HCl, 50~60ml deionized water dissolvings In there-necked flask, 50~65 DEG C of temperature control pours into 1~6ml aniline in three-necked flask, after 2~3h of reaction, filters, washing, 50~65 DEG C are dried to obtain montmorillonite/polyaniline complex solid base catalyst presoma;
(3) by the montmorillonite obtained in 1.2~1.8g steps (2)/polyaniline complex solid base catalyst presoma, 1~4g second Sour sodium, 10~60ml ethylene glycol is incorporated with the water heating kettle of polytetrafluoroethyllining lining after stirring, in 373~483K constant temperature 1 ~9h, takes out product, filters, washs and dries, obtains montmorillonite/polyaniline complex solid base catalyst.
2. a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst as claimed in claim 1, it is characterised in that In the step (1), the FeCl3Quality is 50~60g.
3. a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst as claimed in claim 1, it is characterised in that In the step (1), the mixing time is 3~5h.
4. a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst as claimed in claim 1, it is characterised in that In the step (2), the HCl consumptions are 2~2.2ml.
5. a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst as claimed in claim 1, it is characterised in that In the step (2), the aniline consumption is 5~6ml.
6. a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst as claimed in claim 1, it is characterised in that In the step (3), the temperature is 473~483K.
7. a kind of preparation method of montmorillonite/polyaniline complex solid base catalyst as claimed in claim 1, it is characterised in that In the step (3), the constant temperature time is 8~9h.
CN201510748492.7A 2015-11-07 2015-11-07 A kind of preparation method of montmorillonite/polyaniline complex solid base catalyst Expired - Fee Related CN105413751B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6136909A (en) * 1999-05-20 2000-10-24 Industrial Technology Research Institute Preparation of conductive polymeric nanocomposite
CN1381530A (en) * 2002-03-25 2002-11-27 浙江大学 Polyphenylamine composition with clay ore as carrier and its preparing process
CN104741096A (en) * 2015-03-16 2015-07-01 中国科学院兰州化学物理研究所 Preparation method of magnetic clay mineral/polyaniline composite adsorption material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6136909A (en) * 1999-05-20 2000-10-24 Industrial Technology Research Institute Preparation of conductive polymeric nanocomposite
CN1381530A (en) * 2002-03-25 2002-11-27 浙江大学 Polyphenylamine composition with clay ore as carrier and its preparing process
CN104741096A (en) * 2015-03-16 2015-07-01 中国科学院兰州化学物理研究所 Preparation method of magnetic clay mineral/polyaniline composite adsorption material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
原位插层聚合法制备聚苯胺/蒙脱石纳米复合导电材料的研究;胡傲厚 等;《非金属矿》;20100531;第33卷(第3期);第5-8页 *

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