CN106540691A - A kind of preparation method of nano-silver catalyst - Google Patents

A kind of preparation method of nano-silver catalyst Download PDF

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Publication number
CN106540691A
CN106540691A CN201610879677.6A CN201610879677A CN106540691A CN 106540691 A CN106540691 A CN 106540691A CN 201610879677 A CN201610879677 A CN 201610879677A CN 106540691 A CN106540691 A CN 106540691A
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China
Prior art keywords
silver
montmorillonite
nano
preparation
catalyst
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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CN201610879677.6A
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Chinese (zh)
Inventor
潘中海
司荣美
刘彩风
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Tianjin Baoxingwei Technology Co Ltd
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Tianjin Baoxingwei Technology Co Ltd
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Priority to CN201610879677.6A priority Critical patent/CN106540691A/en
Publication of CN106540691A publication Critical patent/CN106540691A/en
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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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/48—Silver or gold
    • B01J23/50—Silver
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20—Organic substances
    • A62D2101/26—Organic substances containing nitrogen or phosphorus
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20—Organic substances
    • A62D2101/28—Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Catalysts (AREA)

Abstract

The present invention provides a kind of preparation method of nano-silver catalyst, it is characterised in that comprise the following steps：1. compound concentration is the silver nitrate solution of 0.025mol/L；2. the silver nitrate solution for having configured is added into montmorillonite while stirring；3. polyethylene of dispersing agent ketopyrrolidine (PVP) is added after standing 0.5 hour；4. stir 0.5 hour, Deca aqueous ascorbic acid, be elemental silver by silver ion reduction；5. reacted suspension sucking filtration is separated to filtrate and is clarified, and be washed with deionized；6. product is sealed after 80 DEG C of dryings preservation；Described montmorillonite is sodium form montmorillonite；Described aqueous ascorbic acid concentration is 0.1mol/L；Obtained in of the invention, nanometer silver/montmorillonite catalyst good dispersion, heat stability are high, have good room temperature degraded catalysis activity to methylene blue, and catalyst still keeps high catalytic activity after no more than 200 DEG C of heat treatment.

Description

A kind of preparation method of nano-silver catalyst
Technical field
The present invention relates to catalyst preparation technical field, more particularly to a kind of preparation method of nano-silver catalyst.
Background technology
It is catalyzed in petrochemical industry in addition, dehydrogenation and the oxidation reaction of various hydro carbons, metal is urged as a class is important Agent is widely used, therefore the nano metal particles with high catalytic activity are in preparation, the dispersion of various catalyst carriers One of the advanced subject in the field, such as silicon dioxide, aluminium oxide, zeolite and heteropoly acid etc. are always with stabilisation research.
The natural clay minerals such as the silicate mineral with nanometer laminated structure, such as montmorillonite, due to there is big inner surface Can as reactor, well swellability and cation interchangeability in aqueous, be particularly suitable for preparing load thereon Nano semiconductor or noble metal with narrow particle diameter and polymolecularity, clay mineral can also make nanoparticle stabilisation, have Effect avoids the generation reunited.
Nanometer silver has good catalytic action, and nanometer silver/montmorillonite catalyst has preferable room temperature to methylene blue Degraded catalysis activity, good dispersion, heat stability are high, have great practical value, but nanometer silver/montmorillonite catalyst at present Research be in the starting stage, most of preparation method is difficult to prepare the high nanometer silver/montmorillonite of good dispersion, heat stability Catalyst.
The content of the invention
Present invention seek to address that the deficiencies in the prior art, and a kind of preparation method of nano-silver catalyst is provided.
The present invention for achieving the above object, is employed the following technical solutions：A kind of preparation method of nano-silver catalyst, which is special Levy and be, comprise the following steps：
1. compound concentration is the silver nitrate solution of 0.025mol/L；
2. the silver nitrate solution for having configured is added into montmorillonite while stirring；
3. polyethylene of dispersing agent ketopyrrolidine (PVP) is added after standing 0.5 hour；
4. stir 0.5 hour, Deca aqueous ascorbic acid, be elemental silver by silver ion reduction；
5. reacted suspension sucking filtration is separated to filtrate and is clarified, and be washed with deionized；
6. product is sealed after 80 DEG C of dryings preservation.
Described montmorillonite is sodium form montmorillonite, and maximum ion exchange capacity is 120mmol/100g.
Described polyethylene of dispersing agent ketopyrrolidine (PVP) molecular weight is 30000.
Described aqueous ascorbic acid concentration is 0.1mol/L.
The invention has the beneficial effects as follows：Nanometer silver/montmorillonite catalyst good dispersion, heat stability obtained in of the invention Height, has good room temperature degraded catalysis activity to methylene blue, and catalyst still keeps high after no more than 200 DEG C of heat treatment Catalysis activity.
Specific embodiment
With reference to embodiment, the invention will be further described：
The present invention provides a kind of preparation method of nano-silver catalyst, it is characterised in that comprise the following steps：
1. compound concentration is the silver nitrate solution of 0.025mol/L；
2. the silver nitrate solution for having configured is added into montmorillonite while stirring；
3. polyethylene of dispersing agent ketopyrrolidine (PVP) is added after standing 0.5 hour；
4. stir 0.5 hour, Deca aqueous ascorbic acid, be elemental silver by silver ion reduction；
5. reacted suspension sucking filtration is separated to filtrate and is clarified, and be washed with deionized；
6. product is sealed after 80 DEG C of dryings preservation.
Described montmorillonite is sodium form montmorillonite, and maximum ion exchange capacity is 120mmol/100g.
Described polyethylene of dispersing agent ketopyrrolidine (PVP) molecular weight is 30000.
Described aqueous ascorbic acid concentration is 0.1mol/L.
Above the present invention is exemplarily described, it is clear that the present invention is implemented and is not subject to the restrictions described above, As long as employing method of the present invention design and the various improvement that carry out of technical scheme, or not improved directly apply to other fields Close, within protection scope of the present invention.

Claims (4)

1. a kind of preparation method of nano-silver catalyst, it is characterised in that comprise the following steps：
1. compound concentration is the silver nitrate solution of 0.025mol/L；
2. the silver nitrate solution for having configured is added into montmorillonite while stirring；
3. polyethylene of dispersing agent ketopyrrolidine (PVP) is added after standing 0.5 hour；
4. stir 0.5 hour, Deca aqueous ascorbic acid, be elemental silver by silver ion reduction；
5. reacted suspension sucking filtration is separated to filtrate and is clarified, and be washed with deionized；
6. product is sealed after 80 DEG C of dryings preservation.
2. the preparation method of nano-silver catalyst according to claim 1, it is characterised in that described montmorillonite is sodium form Montmorillonite, maximum ion exchange capacity are 120mmol/100g.
3. the preparation method of nano-silver catalyst according to claim 1, it is characterised in that described polyethylene of dispersing agent Ketopyrrolidine (PVP) molecular weight is 30000.
4. the preparation method of nano-silver catalyst according to claim 1, it is characterised in that described ascorbic acid is water-soluble Liquid concentration is 0.1mol/L.
CN201610879677.6A 2016-09-30 2016-09-30 A kind of preparation method of nano-silver catalyst Withdrawn CN106540691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610879677.6A CN106540691A (en) 2016-09-30 2016-09-30 A kind of preparation method of nano-silver catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610879677.6A CN106540691A (en) 2016-09-30 2016-09-30 A kind of preparation method of nano-silver catalyst

Publications (1)

Publication Number Publication Date
CN106540691A true CN106540691A (en) 2017-03-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108929543A (en) * 2018-08-27 2018-12-04 南京师范大学 Silicon rubber/carrying nano silver ester/modified montmorillonite nano antimicrobial composite material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1583332A (en) * 2004-06-08 2005-02-23 陈丽琼 Nanometer silver sol and preparing method thereof
CN102585493A (en) * 2010-12-28 2012-07-18 上海杰事杰新材料(集团)股份有限公司 Nano particle/polyamide composite material, preparation method and application thereof
CN105585099A (en) * 2015-12-23 2016-05-18 中国科学院烟台海岸带研究所 Decolorization treatment method for colored liquid waste

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1583332A (en) * 2004-06-08 2005-02-23 陈丽琼 Nanometer silver sol and preparing method thereof
CN102585493A (en) * 2010-12-28 2012-07-18 上海杰事杰新材料(集团)股份有限公司 Nano particle/polyamide composite material, preparation method and application thereof
CN105585099A (en) * 2015-12-23 2016-05-18 中国科学院烟台海岸带研究所 Decolorization treatment method for colored liquid waste

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李新平等: ""纳米银/蒙脱土催化剂的制备及对亚甲基蓝的催化降解"", 《北京化工大学学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108929543A (en) * 2018-08-27 2018-12-04 南京师范大学 Silicon rubber/carrying nano silver ester/modified montmorillonite nano antimicrobial composite material and preparation method thereof

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