CN107352555A - A kind of wet type solid phase mechanical attrition method prepares Fe0The method of the composites of/ZSM 5 - Google Patents
A kind of wet type solid phase mechanical attrition method prepares Fe0The method of the composites of/ZSM 5 Download PDFInfo
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- CN107352555A CN107352555A CN201710453860.4A CN201710453860A CN107352555A CN 107352555 A CN107352555 A CN 107352555A CN 201710453860 A CN201710453860 A CN 201710453860A CN 107352555 A CN107352555 A CN 107352555A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/36—Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
- C01B39/38—Type ZSM-5
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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Abstract
The invention discloses a kind of wet type solid phase mechanical attrition method to prepare Fe0The method of the composites of/ZSM 5, belong to the synthesis technical field of load-type zero-valent iron.Technical scheme main points are：（1）By Zero-valent Iron and the molecular sieves of ZSM 5 in mass ratio 1:1.5 6 it is well mixed after disperse to obtain raw material mixed liquor in propylene glycol solution；（2）According to ratio of grinding media to material it is 30 40 by zirconium oxide balls and raw material mixed liquor:1 mass ratio is placed in ball grinder, and intermittently replacing the 8h of rotating ball milling 6 under the conditions of rotating speed is 300 400r/min mechanical ball mill obtains ball milling mixing liquid；（3）Ball milling mixing liquid is poured out from ball grinder, centrifugation makes separation of solid and liquid, then washs solid product 23 times with absolute ethyl alcohol, is subsequently placed in vacuum drying chamber and is dried to obtain Fe0The composites of/ZSM 5.Present invention process is simple and cost is cheap, yield can prepare the Fe having good stability greatly0The composites of/ZSM 5, and the Fe prepared0The composites of/ZSM 5 are used to handle the pollutant superior performance in water and soil.
Description
Technical field
The invention belongs to the preparing technical field of load-type zero-valent iron, and in particular to a kind of wet type solid phase mechanical ball mill legal system
Standby Fe0The method of/ZSM-5 composites.
Background technology
Molecular sieve is the silicate or alumino-silicate of crystalline state, passes through oxygen bridge key phase by silicon-oxy tetrahedron or aluminum-oxygen tetrahedron
Even formed, there is unique duct and cavity system, so as to the characteristic with screening molecule.Because molecular sieve has energy of adsorption
Not the advantages of other adsorbents such as power is high, heat endurance is strong do not have so that molecular sieve is widely applied.At present, zeroth order
The preparation method of iron can be divided into the major class of Mechanical Method, liquid phase method, solid phase method and vapor phase method etc. four.
Wherein, wet chemical methods principle is simple, the Zero-valent Iron of stable dispersion can be prepared, yet with liquid-phase condition
Lower reaction, large batch of production is restricted, while wet chemical methods are easy to reunite in washing process, cause zero
The performance of valency iron reduces；Although Zero-valent Iron purity that its gas-phase preparation method is prepared is high, advantages of good crystallization, and grain is through small, and particle is through distribution
Also than more uniform, but high is required to appointed condition, operating difficulties, it is difficult to adapt to the requirement of large-scale production；And solid phase prepares method,
Particularly high-energy ball milling method, simple to operate, cost is low, and yield is high, easy industrialization.
With the getting worse of environmental problem, how people improves environmental problem if increasingly focusing on.Since discovery zero
After valency iron has good potentiality in processing environment in terms of the inorganic pollution such as heavy metal and organic pollution, it is extensive
Applied to the reparation of ecological environment, but big yield prepares the Zero-valent Iron having good stability and just turns into the problem in the world, and this is also big
The big process for limiting Zero-valent Iron industry.Therefore, find technique simply and yield can prepare the Zero-valent Iron that has good stability greatly
Method is particularly important.
The content of the invention
Present invention solves the technical problem that it there is provided the wet type solid phase mechanical ball mill that a kind of technique is simple and cost is cheap
Method prepares Fe0The method of/ZSM-5 composites, this method yield can prepare the Fe having good stability greatly0/ ZSM-5 composite woods
Material, and the Fe prepared0/ ZSM-5 composites are used to handle the pollutant superior performance in water and soil.
The present invention adopts the following technical scheme that prepared by a kind of wet type solid phase mechanical attrition method to solve above-mentioned technical problem
Fe0The method of/ZSM-5 composites, it is characterised in that concretely comprise the following steps：
（1）By Zero-valent Iron and ZSM-5 molecular sieve in mass ratio 1:It is scattered in propylene glycol solution after 1.5-6 is well mixed to obtain original
Expect mixed liquor；
（2）By zirconium oxide balls and step（1）Obtained raw material mixed liquor is 30-40 according to ratio of grinding media to material:1 mass ratio is placed in
In ball grinder, under the conditions of rotating speed is 300-400r/min mechanical ball mill intermittently replacing rotating ball milling 6-8h obtains ball milling and mixes
Close liquid；
（3）By step（2）Obtained ball milling mixing liquid is poured out from ball grinder, and centrifugation makes separation of solid and liquid, then is washed with absolute ethyl alcohol
Wash solid product 2-3 times, be subsequently placed in vacuum drying chamber and be dried to obtain Fe0/ ZSM-5 composites.
Further preferably, step（1）The mass ratio of middle Zero-valent Iron and ZSM-5 molecular sieve is 1:2.
Further preferably, step（2）In zirconium oxide balls include a diameter of 1mm zirconium oxide balls, a diameter of 2mm oxygen
Change zirconium abrading-ball, a diameter of 4mm zirconium oxide balls and a diameter of 8mm zirconium oxide balls, wherein a diameter of 1mm zirconium oxides are ground
Ball, a diameter of 2mm zirconium oxide balls, the mass ratio of a diameter of 4mm zirconium oxide balls and a diameter of 8mm zirconium oxide balls
For 3:8:20:8.
Further preferably, step（2）In interval alternating rotating mechanical milling process be intermittently to stop 5min after ball milling 10min
After be further continued for ball milling, so repeatedly until ball milling accumulated time be equal to setting Ball-milling Time.
Fe is made by wet type solid phase mechanical attrition method in the present invention0/ ZSM-5 composites, technique is simple and cost is cheap,
Yield it can prepare the Fe having good stability greatly0/ ZSM-5 composites, and the Fe prepared0/ ZSM-5 composites are used to locate
Manage the pollutant superior performance in water and soil.
Brief description of the drawings
Fig. 1 is Fe made from embodiment 10The XRD of/ZSM-5 composites；
Fig. 2 is Fe made from embodiment 10The SEM figures of/ZSM-5 composites；
Fig. 3 is the XRD of Zero-valent Iron made from comparative example 1；
Fig. 4 is the SEM figures of Zero-valent Iron made from comparative example 1.
Embodiment
The above of the present invention is described in further details by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment 1
1st, by Zero-valent Iron and ZSM-5 molecular sieve in mass ratio 1:2 it is well mixed after disperse to obtain raw material in propylene glycol solution to mix
Liquid is closed, abrading-ball includes tetra- kinds of Φ 1mm, Φ 2mm, Φ 4mm and Φ 8mm zirconium oxide balls, quality corresponding to four kinds of zirconium oxide balls
Than for 3:8:20:8；
2nd, it is 35 according to ratio of grinding media to material by abrading-ball and raw material mixed liquor:1 mass ratio is placed in ball grinder, starts mechanical ball mill
Interval rotating alternating ball milling 8h obtains ball milling mixing liquid, and the wherein rotating speed of mechanical ball grinding machine is 375r/min, and interval alternating is just
Reversion mechanical milling process is to be further continued for ball milling after intermittently stopping 5min after ball milling 10min, so repeatedly until ball milling accumulated time etc.
In setting Ball-milling Time；
3rd, ball milling mixing liquid to be poured out from ball grinder, centrifugation makes separation of solid and liquid, then washs solid product 2 times with absolute ethyl alcohol,
It is subsequently placed in vacuum drying chamber and is dried to obtain Fe0/ ZSM-5 composites.
From XRD（Fig. 1）It can be seen that obtained Fe0/ ZSM-5 composites maintain the main spy of ZSM-5 molecular sieve
Diffraction maximum is levied, and occurs the diffraction maximum of fe at 2 θ=44.8 °, the diffraction maximum for the oxide of iron do not occur.Scheme from SEM
（Fig. 2）It can be seen that obtained Fe0The particle diameter of/ZSM-5 composites diminishes, and forms loose micrograined texture, some is even
Reach Nano grade, also largely change its pattern.
Comparative example 1
1st, weigh with the Zero-valent Iron of the quality such as embodiment 1 and to disperse to obtain stock dispersion liquid in propylene glycol solution, abrading-ball includes Φ
Tetra- kinds of 1mm, Φ 2mm, Φ 4mm and Φ 8mm zirconium oxide balls, mass ratio corresponding to four kinds of zirconium oxide balls are 3:8:20:8；
2nd, it is 35 according to ratio of grinding media to material by abrading-ball and stock dispersion liquid:1 mass ratio is placed in ball grinder, starts mechanical ball mill
Interval rotating alternating ball milling 8h obtains ball milling liquid, and the wherein rotating speed of mechanical ball grinding machine is 375r/min, interval alternately rotating
Mechanical milling process is to be further continued for ball milling after intermittently stopping 5min after ball milling 10min, so repeatedly until ball milling accumulated time is equal to sets
Determine Ball-milling Time；
3rd, ball milling liquid is poured out from ball grinder, centrifugation makes separation of solid and liquid, then washs solid product 2 times with absolute ethyl alcohol, then
It is placed in vacuum drying chamber and is dried to obtain Zero-valent Iron.
From XRD（Fig. 3）In it can be seen that there is the diffraction maximum of fe at 2 θ=44.8 ° in obtained Zero-valent Iron, and
And diffraction peak intensity is very high, the diffraction maximum of the oxide of iron is not occurred yet.Scheme from SEM（Fig. 4）It is it can be seen that individually mechanical
The Fe of ball milling0There is obvious agglomeration.
Embodiment 2
1st, by Zero-valent Iron and ZSM-5 molecular sieve in mass ratio 1:1.5 it is well mixed after disperse to obtain raw material in propylene glycol solution
Mixed liquor, abrading-ball include tetra- kinds of Φ 1mm, Φ 2mm, Φ 4mm and Φ 8mm zirconium oxide balls, matter corresponding to four kinds of zirconium oxide balls
Amount is than being 3:8:20:8；
2nd, it is 30 according to ratio of grinding media to material by abrading-ball and raw material mixed liquor:1 mass ratio is placed in ball grinder, starts mechanical ball mill
Interval rotating alternating ball milling 8h obtains ball milling mixing liquid, and the wherein rotating speed of mechanical ball grinding machine is 300r/min, and interval alternating is just
Reversion mechanical milling process is to be further continued for ball milling after intermittently stopping 5min after ball milling 10min, so repeatedly until ball milling accumulated time etc.
In setting Ball-milling Time；
3rd, ball milling mixing liquid to be poured out from ball grinder, centrifugation makes separation of solid and liquid, then washs solid product 2 times with absolute ethyl alcohol,
It is subsequently placed in vacuum drying chamber and is dried to obtain Fe0/ ZSM-5 composites.
It can be seen that obtained Fe from XRD0Also there is spreading out for fe at 2 θ=44.8 ° in/ZSM-5 composites
Peak is penetrated, the diffraction maximum for the oxide of iron do not occur.
Embodiment 3
1st, by Zero-valent Iron and ZSM-5 molecular sieve in mass ratio 1:6 it is well mixed after disperse to obtain raw material in propylene glycol solution to mix
Liquid is closed, abrading-ball includes tetra- kinds of Φ 1mm, Φ 2mm, Φ 4mm and Φ 8mm zirconium oxide balls, quality corresponding to four kinds of zirconium oxide balls
Than for 3:8:20:8；
2nd, it is 40 according to ratio of grinding media to material by abrading-ball and raw material mixed liquor:1 mass ratio is placed in ball grinder, starts mechanical ball mill
Interval rotating alternating ball milling 8h obtains ball milling mixing liquid, and the wherein rotating speed of mechanical ball grinding machine is 400r/min, and interval alternating is just
Reversion mechanical milling process is to be further continued for ball milling after intermittently stopping 5min after ball milling 10min, so repeatedly until ball milling accumulated time etc.
In setting Ball-milling Time；
3rd, ball milling mixing liquid to be poured out from ball grinder, centrifugation makes separation of solid and liquid, then washs solid product 2 times with absolute ethyl alcohol,
It is subsequently placed in vacuum drying chamber and is dried to obtain Fe0/ ZSM-5 composites.
It can be seen that obtained Fe from XRD0Also there is spreading out for fe at 2 θ=44.8 ° in/ZSM-5 composites
Peak is penetrated, the diffraction maximum for the oxide of iron do not occur.
Embodiment above describes the general principle of the present invention, main features and advantages, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (4)
1. a kind of wet type solid phase mechanical attrition method prepares Fe0The method of/ZSM-5 composites, it is characterised in that concretely comprise the following steps：
（1）By Zero-valent Iron and ZSM-5 molecular sieve in mass ratio 1:It is scattered in propylene glycol solution after 1.5-6 is well mixed to obtain original
Expect mixed liquor；
（2）By zirconium oxide balls and step（1）Obtained raw material mixed liquor is 30-40 according to ratio of grinding media to material:1 mass ratio is placed in
In ball grinder, under the conditions of rotating speed is 300-400r/min mechanical ball mill intermittently replacing rotating ball milling 6-8h obtains ball milling and mixes
Close liquid；
（3）By step（2）Obtained ball milling mixing liquid is poured out from ball grinder, and centrifugation makes separation of solid and liquid, then is washed with absolute ethyl alcohol
Wash solid product 2-3 times, be subsequently placed in vacuum drying chamber and be dried to obtain Fe0/ ZSM-5 composites.
2. wet type solid phase mechanical attrition method according to claim 1 prepares Fe0The method of/ZSM-5 composites, its feature
It is：Step（1）The mass ratio of middle Zero-valent Iron and ZSM-5 molecular sieve is 1:2.
3. wet type solid phase mechanical attrition method according to claim 1 prepares Fe0The method of/ZSM-5 composites, its feature
It is：Step（2）In zirconium oxide balls include a diameter of 1mm zirconium oxide balls, a diameter of 2mm zirconium oxide balls, diameter
The zirconium oxide balls of zirconium oxide balls and a diameter of 8mm for 4mm, wherein a diameter of 1mm zirconium oxide balls, a diameter of 2mm
The mass ratio of zirconium oxide balls, a diameter of 4mm zirconium oxide balls and a diameter of 8mm zirconium oxide balls is 3:8:20:8.
4. wet type solid phase mechanical attrition method according to claim 1 prepares Fe0The method of/ZSM-5 composites, its feature
It is：Step（2）In interval alternating rotating mechanical milling process be to be further continued for ball milling after intermittently stopping 5min after ball milling 10min,
So repeatedly until ball milling accumulated time is equal to setting Ball-milling Time.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330537A (en) * | 2020-03-05 | 2020-06-26 | 国家能源集团宁夏煤业有限责任公司 | Heavy metal adsorbent and preparation method and application thereof |
| CN112691777A (en) * | 2020-12-10 | 2021-04-23 | 北京机械力化学研究院有限公司 | Preparation method of ceramic-zero-valent iron nano composite material |
| CN113264575A (en) * | 2021-05-07 | 2021-08-17 | 河南师范大学 | Electrochemical coupling granulation ZVI/Fe3O4Method for removing Cr (VI) in underground water by using AC material |
| CN115304077A (en) * | 2022-08-10 | 2022-11-08 | 浙江浙能技术研究院有限公司 | Molecular sieve for selective catalytic reduction of nitrogen oxides and preparation method and application thereof |
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Patent Citations (2)
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| JPH05184935A (en) * | 1992-01-17 | 1993-07-27 | Nissan Motor Co Ltd | Catalyst for purifying exhaust gas |
| KR20030047252A (en) * | 2001-12-10 | 2003-06-18 | 현대자동차주식회사 | Catalyst apparatus to reduce hydrocarbon |
Non-Patent Citations (1)
| Title |
|---|
| 王春峰等: "机械球磨制备Fe0/ZSM-5 复合材料及其对Pb2+的去除研究", 《高校化学工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330537A (en) * | 2020-03-05 | 2020-06-26 | 国家能源集团宁夏煤业有限责任公司 | Heavy metal adsorbent and preparation method and application thereof |
| CN112691777A (en) * | 2020-12-10 | 2021-04-23 | 北京机械力化学研究院有限公司 | Preparation method of ceramic-zero-valent iron nano composite material |
| CN113264575A (en) * | 2021-05-07 | 2021-08-17 | 河南师范大学 | Electrochemical coupling granulation ZVI/Fe3O4Method for removing Cr (VI) in underground water by using AC material |
| CN115304077A (en) * | 2022-08-10 | 2022-11-08 | 浙江浙能技术研究院有限公司 | Molecular sieve for selective catalytic reduction of nitrogen oxides and preparation method and application thereof |
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