CN210079501U - Solvothermal synthesis device for nano catalyst production - Google Patents
Solvothermal synthesis device for nano catalyst production Download PDFInfo
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- CN210079501U CN210079501U CN201920458391.XU CN201920458391U CN210079501U CN 210079501 U CN210079501 U CN 210079501U CN 201920458391 U CN201920458391 U CN 201920458391U CN 210079501 U CN210079501 U CN 210079501U
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Abstract
The utility model provides a solvent thermal synthesis device for producing nano-catalyst. The utility model discloses a base, the base on be provided with an annular groove, the annular groove the inside is provided with the seal filler, be provided with the overhead tank on the annular groove, the top seal of overhead tank, the bottom embedding the annular groove in and through the seal filler seal, be provided with on the base and arrange in the reaction vessel of overhead tank the inside, the overhead tank on be provided with the steam input hole, the steam input hole passes through the steam conduit and connects the boiler, the last booster pump that is provided with of steam conduit, the overhead tank top is provided with four synchronous hydro-cylinders. The utility model discloses the required pressure of reaction is provided by outside pressure source, and pressure is stable in the reaction vessel to the heating is simple and convenient, has avoided the amorphous hydroxide that metal oxide precursor and water direct contact arouse to produce simultaneously, and product quality is stable.
Description
The technical field is as follows:
the utility model relates to a solvent thermal synthesis device is used in nanometer catalyst production belongs to catalyst production facility technical field.
Background art:
the nano-catalyst has the characteristics of large specific surface area, many surface active sites and the like, and shows excellent catalytic performances of high activity, high selectivity and the like in some chemical reactions, so that the nano-catalyst has attracted extensive attention of researchers. At present, there are many methods for preparing the nano-catalyst, such as hydrolysis method, precipitation method, sol-gel method, solvent thermal synthesis method, chemical vapor method, micro-emulsion method, etc.
The solvothermal synthesis method is a simple method for synthesizing nano-crystals, and many subject groups at home and abroad use the method to synthesize nano-materials, and the method is crucial to control of some reaction conditions, such as solvent, temperature, pH, surfactant and the like. The existing synthesis reaction device for the solvent thermal synthesis method is generally a closed reaction container with a polytetrafluoroethylene lining, when synthesizing a metal oxide nanocrystal material, a metal oxide precursor is directly contacted with water and placed into the reaction container, and the reaction container is closed and placed in an oven with a required reaction temperature for reaction. However, for most metal oxide nanocrystalline materials, due to the very high hydrolysis reactivity of their metal oxide precursors themselves, direct contact with water immediately leads to a vigorous liquid phase rapid hydrolysis reaction, resulting in the formation of large amounts of amorphous hydroxide precipitate aggregates. The subsequent high-temperature roasting treatment can convert the amorphous state into the crystal to obtain the metal oxide nano-crystal, thereby further intensifying the agglomeration of the particles, and further causing a plurality of technical problems such as the increase of the size of the nano-particles, the reduction of the specific surface area, the unstable crystal phase structure and the like which limit the application of the nano-material.
In order to solve the above problems, chinese patent CN201720084168.4 discloses a hydrothermal synthesis reaction apparatus comprising: a stainless steel reaction vessel having an upper opening; the polytetrafluoroethylene lining is arranged in the reaction kettle, and the outer wall of the polytetrafluoroethylene lining is in close contact with the inner wall of the reaction kettle; the reaction vessel is made of inert materials, the upper part of the reaction vessel is open, the reaction vessel is arranged in the polytetrafluoroethylene lining, and a gap for filling water is reserved between the periphery of the reaction vessel and the polytetrafluoroethylene lining; and a polytetrafluoroethylene cover disposed in said reaction vessel for covering said polytetrafluoroethylene liner; and the reaction kettle cover is in threaded connection with an opening at the upper part of the reaction kettle and is used for sealing the reaction kettle and tightly pressing the polytetrafluoroethylene cover. The vapor phase hydrothermal synthesis reaction successfully avoids the generation of amorphous hydroxide caused by direct contact reaction of liquid water and a metal oxide precursor solution. However, the solution thermal synthesis reaction produced by the nano catalyst is carried out at high temperature and high pressure, the sealing performance of the threaded connection cannot meet the requirement, so that the reaction pressure is insufficient, the product quality is finally affected, and the device needs to integrally place the reaction container in a heating environment for heating, so that the heating is inconvenient and the heat consumption is large.
The invention content is as follows:
the utility model aims at the problem that above-mentioned exists provide a nanometer catalyst production is with solvothermal synthesizer, and the required pressure of reaction is provided by outside pressure source, and pressure is stable in the reaction vessel to the heating is simple and convenient, has avoided the amorphous hydroxide production that metal oxide precursor and water direct contact arouse simultaneously, and product quality is stable.
The above purpose is realized by the following technical scheme:
solvent thermal synthesis device is used in nano-catalyst production, the on-line screen storage device comprises a base, the base on be provided with an annular groove, the annular groove the inside is provided with sealing filler, be provided with the overhead tank on the annular groove, the top of overhead tank is sealed, the bottom embedding the annular groove in and through sealing filler seal, be provided with on the base and arrange in the reaction vessel of overhead tank the inside, the overhead tank on be provided with the steam input hole, the steam input hole passes through steam conduit and connects the boiler, the last booster pump that is provided with of steam conduit, the overhead tank top is provided with four synchronous hydro-cylinders.
The solvent thermal synthesis device for producing the nano catalyst is characterized in that a pressure sensor, a temperature sensor and a flow meter are arranged on a connecting section between the booster pump and the steam input hole on the steam pipeline.
The solvent thermal synthesis device for producing the nano catalyst is characterized in that a polytetrafluoroethylene inner lining layer is arranged on the inner wall of the pressure tank.
The solvothermal synthesis device for producing the nano catalyst is characterized in that a magnetic stirrer is arranged in the reaction vessel.
The solvent thermal synthesis device for producing the nano catalyst is characterized in that a valve is arranged on the steam pipeline.
Has the advantages that:
1. the utility model discloses a steam conduit lets in high temperature steam and replaces water to participate in with the reaction, has avoided liquid water and metal oxide precursor solution direct contact reaction and the amorphous hydroxide who leads to produce, heats through high temperature steam simultaneously, and heating efficiency is high, and the heat consumes for a short time, the utility model discloses a pressure tank inversion sets up on the base, and the bottom seals through the sealing filler that ring channel the inside set up, and upper portion pressurizes through four synchronous hydro-cylinders, and whole pressure is stable, and steam passes through the booster pump input, plays the effect of heating, pressure boost pressurization, and direct participation reaction, and device simple structure, temperature and pressure are convenient for control, and the heat consumes lowly, and product quality is stable.
2. Because steam conduit and the inside intercommunication of overhead tank, the utility model discloses a steam conduit is last the booster pump with be provided with pressure sensor, temperature sensor, flowmeter on the linkage segment between the steam input hole, be convenient for master reactor internal pressure and temperature at any time, master the total amount of the water of participating in the reaction, the product quality's of being convenient for control through the steam volume of flowmeter measurement input simultaneously.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
FIG. 1, base; 2. an annular groove; 3. sealing and filling; 4. a pressure tank; 5. a reaction vessel; 6. a steam input hole; 7. a boiler; 8. a booster pump; 9. an oil cylinder; 10. a pressure sensor; 11. a temperature sensor; 12. a flow meter; 13. magnetic stirrer; 14. and (4) a valve.
The specific implementation mode is as follows:
example 1:
as shown in fig. 1: the solvent thermal synthesis device for producing the nano catalyst comprises a base 1, the base on be provided with an annular groove 2, the annular groove the inside is provided with sealing filler 3, the last overhead tank 4 that is provided with of annular groove, the top seal of overhead tank, the bottom embedding the annular groove in and through sealing filler seal, be provided with on the base and arrange in the reaction vessel 5 of overhead tank the inside, the overhead tank on be provided with steam input hole 6, steam input hole passes through steam pipe and connects boiler 7, the last booster pump 8 that is provided with of steam pipe, the overhead tank top is provided with four synchronous hydro-cylinders 9.
In the solvothermal synthesis apparatus for producing a nano-catalyst in this embodiment, the steam pipeline is provided with a pressure sensor 10, a temperature sensor 11, and a flow meter 12 at a connection section between the booster pump and the steam input hole.
In the solvothermal synthesis device for producing the nano-catalyst, a polytetrafluoroethylene inner liner layer is arranged on the inner wall of the pressure tank.
In the solvothermal synthesis apparatus for producing a nano-catalyst described in this embodiment, a magnetic stirrer 13 is disposed in the reaction vessel. The magnetic stirrer of the utility model adopts a conventional magnetic stirrer.
In the solvothermal synthesis apparatus for producing a nano-catalyst described in this embodiment, the steam pipeline is provided with a valve 14.
The working process is as follows:
the method is characterized in that a metal oxide precursor solution is added into a reactor, then steam with proper temperature is input according to the temperature required by the reaction, the pressure and the temperature in the reactor are convenient to master at any time through a booster pump, a pressure sensor, a temperature sensor and a flowmeter, and meanwhile, the total amount of water participating in the reaction is mastered through the amount of the steam input through the flowmeter, so that the product quality is convenient to control. The four synchronous oil cylinders are uniformly arranged at the top of the pressure tank to compress the pressure tank, so that the stability of the internal pressure of the pressure tank is ensured.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (5)
1. A solvent thermal synthesis device for producing nano-catalyst is characterized in that: the base on be provided with an annular groove, the annular groove the inside is provided with sealing filler, be provided with the overhead tank on the annular groove, the top seal of overhead tank, the bottom embedding the annular groove in and through sealing filler seal, be provided with on the base and arrange in the reaction vessel of overhead tank the inside, the overhead tank on be provided with the steam input hole, the steam input hole passes through the steam pipe and connects the boiler, the last booster pump that is provided with of steam pipe, the overhead tank top is provided with four synchronous hydro-cylinders.
2. The solvothermal synthesis apparatus for producing a nanocatalyst according to claim 1, wherein: and a pressure sensor, a temperature sensor and a flow meter are arranged on the connecting section between the booster pump and the steam input hole on the steam pipeline.
3. The solvothermal synthesis apparatus for producing a nanocatalyst according to claim 1, wherein: and a polytetrafluoroethylene inner liner is arranged on the inner wall of the pressure tank.
4. The solvothermal synthesis apparatus for producing a nanocatalyst according to claim 1, wherein: and a magnetic stirrer is arranged in the reaction vessel.
5. The solvothermal synthesis apparatus for producing a nanocatalyst according to claim 1, wherein: and a valve is arranged on the steam pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920458391.XU CN210079501U (en) | 2019-04-08 | 2019-04-08 | Solvothermal synthesis device for nano catalyst production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920458391.XU CN210079501U (en) | 2019-04-08 | 2019-04-08 | Solvothermal synthesis device for nano catalyst production |
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| Publication Number | Publication Date |
|---|---|
| CN210079501U true CN210079501U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920458391.XU Expired - Fee Related CN210079501U (en) | 2019-04-08 | 2019-04-08 | Solvothermal synthesis device for nano catalyst production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939633A (en) * | 2019-04-08 | 2019-06-28 | 南京威安新材料科技有限公司 | Nanocatalyst production solvent-thermal process device |
-
2019
- 2019-04-08 CN CN201920458391.XU patent/CN210079501U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939633A (en) * | 2019-04-08 | 2019-06-28 | 南京威安新材料科技有限公司 | Nanocatalyst production solvent-thermal process device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 |