Photocatalytic reaction device

Abstract

The utility model provides a photocatalytic reaction device which comprises a magnetic stirrer, a reactor main body positioned above the magnetic stirrer, a light source positioned above the reactor main body and a plurality of reaction bottles inserted into the reactor main body, a plurality of through holes for obliquely inserting the reaction bottles are formed in the side wall of the reactor main body, grooves are formed in the contact positions of the bottom in the reactor main body and the bottoms of the reaction bottles, a bracket for fixing the light source is mounted on the side wall of the reactor main body, and the center of the light source and the circle center of the bottom surface of the reactor main body are positioned on the same vertical line. The photocatalytic reaction device provided by the utility model can realize higher light utilization rate by adopting a simple structure, can ensure the consistency of each group of experimental conditions during parallel contrast experiments, reduces experimental errors and improves accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of photocatalysis, in particular to a photocatalytic reaction device. Background Art

[0002] Photocatalysis uses light to stimulate electrons to initiate chemical reactions, enabling the breaking and reforming of chemical bonds under mild conditions. Compared to traditional heating reactions, it offers advantages such as being green, clean, safe, environmentally friendly, and easy to control. In recent years, the application of photocatalysis in organic synthesis has rapidly developed.

[0003] Since there are many influencing factors in the photocatalytic organic synthesis reaction, and the time period of the photocatalytic experiment is generally long, in order to ensure the consistency of the experimental conditions, it is necessary to carry out multiple sets of parallel comparative experiments at the same time. CN104190344A discloses a light irradiation multi-sample parallel reaction device, in which the light source of the device is incident into the reaction bottle from the bottom of the reaction bottle, and the irradiation intensity incident on the solution is consistent during the parallel comparative experiment. However, there is one light source module under each reaction bottle of the device. Considering the size of the structure and the structure of natural heat dissipation, the power of a single module is bound to be relatively low, so the light intensity output is bound to be relatively weak, resulting in a too slow reaction speed. In order to improve the uniformity of illumination of all reaction bottles, the device adopts a rotating light source for irradiation, which will lose the utilization time of the light source, and secondly, it will increase the complexity of the structure and increase the cost of the equipment. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a photocatalytic reaction device with a simple structure and high light utilization rate.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A photocatalytic reaction device includes: a magnetic stirrer, a reactor body located above the magnetic stirrer, a light source located above the reactor body, and multiple reaction bottles inserted into the reactor body. The reactor body is a cylindrical container with an open upper end, and the side wall is provided with multiple through holes for the reaction bottles to be inserted at an angle. A groove is provided at the contact point between the bottom of the reactor body and the bottom of the reaction bottle. A bracket for fixing the light source is installed on the side wall of the reactor body, and the center of the light source and the center of the bottom surface of the reactor body are located on the same vertical line.

[0007] Furthermore, a circular boss is provided in the middle of the inner bottom surface of the reactor body, and the multiple grooves are located on the circular boss and arranged in a circle around the center of the bottom surface.

[0008] Furthermore, the inner wall of the reactor body is a highly reflective diffuse reflection surface with a reflectivity of ≥85%.

[0009] Furthermore, the reactor body is integrally formed, and the inner side wall and the bottom surface are connected by an arc transition.

[0010] Furthermore, the inclination angle of the reaction bottle is 0° to 70°, preferably 20° to 60°.

[0011] Furthermore, a loading platform is provided on the upper portion of the magnetic stirrer, and a slot matching the loading platform is provided on the outer side of the bottom of the reactor body, and the loading platform is embedded in the slot.

[0012] Furthermore, the light source is an LED light source with a power of 40 to 100W.

[0013] Furthermore, the wavelength range of the light source is 230nm to 840nm.

[0014] Furthermore, the bracket is composed of mutually perpendicular transverse support members and vertical rods, the vertical rods are installed on the side walls of the reactor body, one end of the transverse support member is connected to the vertical rod, and the other end fixes the light source.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The photocatalytic reaction device provided by the utility model can achieve high light utilization rate with a simple structure, can ensure the consistency of experimental conditions of each group in parallel comparative experiments, reduce experimental errors and improve accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the photocatalytic reaction device;

[0018] Figure 2 This is an assembly cross-sectional view of the photocatalytic reaction device.

[0019] Figure numerals: 1-magnetic stirrer, 101-stirrer body, 102-stage, 2-reactor body, 3-light source, 4-reaction bottle, 5-bracket, 501-horizontal plate, 502-vertical rod. DETAILED DESCRIPTION

[0020] To enable those skilled in the art to more clearly understand the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the following, in conjunction with the accompanying drawings and preferred embodiments, further describes in detail the specific implementation methods, structures, features, and effects of the present invention. The examples are provided only to illustrate the present invention and are not intended to limit the scope of the present invention.

[0021] Reference Figures 1 to 2 As shown, a photocatalytic reaction device provided in this embodiment includes: a magnetic stirrer 1, a reactor body 2, a light source 3, and a reaction bottle 4.

[0022] The magnetic stirrer 1 is a conventional magnetic stirrer, and a stage 102 is provided on the upper portion of the stirrer body 101 .

[0023] The reactor body 2 is a cylindrical container with an open top. There are multiple through holes on the side wall arranged in a circle around the side wall. The reaction bottle 4 is inserted into the reactor body 2 at an angle through the through holes. There is a circular boss in the middle of the bottom surface of the reactor body 2. There are multiple grooves on the circular boss arranged in a circle around the center of the bottom surface. The number of grooves is the same as the number of through holes. The bottom of the reaction bottle 4 is inserted into the groove to play a role of locking and fixing.

[0024] The reactor body 2 is CNC-machined from an aluminum alloy, with an arc-shaped transition between the internal sidewalls and bottom. The inner wall is treated with a highly reflective diffuse reflective treatment, achieving a reflectivity of ≥85%, which helps improve light utilization and reduce halation. 6063 aluminum alloy is preferably used, with an anodized surface and a bright silver anodized interior to achieve better light utilization and color rendering.

[0025] The reactor body 2 is installed above the magnetic stirrer 1 . A slot matching the stage 102 is provided on the outer side of the bottom of the reactor body 2 . The stage 102 is embedded in the slot and fixed.

[0026] The number of through holes on the reactor body 2 is preferably 6 to 12, evenly distributed around the side wall. The angle of the line connecting the through holes and the corresponding grooves is 0° to 70°, preferably 20° to 60°, which makes it easier and faster to insert the reaction bottle 4.

[0027] A bracket 5 for fixing the light source 3 is installed on the side wall of the reactor body 2. The bracket 5 consists of a horizontal plate 501 and a vertical rod 502 that are perpendicular to each other. One end of the vertical rod 502 has an external thread, and the upper end face of the side wall of the reactor body 2 has a blind hole with an internal thread. The vertical rod 502 is inserted into the blind hole and fixed to the side wall of the reactor body 2 by threads; one end of the horizontal plate 501 has two screw holes, which are connected to the corresponding screw holes on the outer shell of the light source 3 by bolts to fix the light source 3. The other end of the horizontal plate 501 has a through hole for the vertical rod 502 to pass through, and the end face also has a screw hole axially connected to the through hole. A knob bolt is installed in the screw hole, and the horizontal plate 501 is fixed to the vertical rod 502 by the knob bolt, and the height of the horizontal plate 501 can be adjusted.

[0028] The outer shell of light source 3 is a straight cylinder with two screw holes at the top corresponding to the screw holes on horizontal plate 501 for mounting fixing bolts. The lower end is equipped with an irradiation lamp bead. Light source 3 is located directly above reactor body 2, with its center on the same vertical line as the center of the bottom surface of reactor body 2.

[0029] Light source 3 is an LED light source with a power of 40 to 100W and multiple adjustable power levels. The wavelength range is 230 nm to 840 nm, with typical wavelengths including 230 nm, 254 nm, 265 nm, 275 nm, 285 nm, 295 nm, 305 nm, 308 nm, 325 nm, 330 nm, 340 nm, 360 nm, 365 nm, 370 nm, 380 nm, 390 nm, 400 nm, 427 nm, 440 nm, 456 nm, 467 nm, 525 nm, 640 nm, 760 nm, and 840 nm.

[0030] The reaction bottle 4 is made of quartz glass and has a circular or rectangular cross section.

[0031] When in use, the prepared reaction solution is loaded into the reaction bottle 4, and the magnetic stirrer is placed in the bottle. The reaction bottle 4 is inserted obliquely into the reactor body 2 through the through hole on the side wall of the reactor body 2, and the bottom of the reaction bottle 4 is inserted into the groove. Turn on the power switch of the magnetic stirrer 1, adjust the speed, and adjust the height and power of the light source 3 to ensure that the light intensity at each reaction bottle position is consistent.

[0032] The photocatalytic reaction device provided in this embodiment allows for direct parallel comparison of multiple experiments. The consistent intensity of the radiation incident on the solution during the experiment eliminates the need for additional control of external factors, minimizing experimental error and improving accuracy. Furthermore, the device has a simple structure, is easily disassembled, and its components are easily replaced, resulting in lower costs.

[0033] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any person skilled in the art may, without departing from the scope of the present invention, utilize the above-disclosed technical content to make slight changes or modifications to equivalent embodiments. However, any simple modifications, equivalent changes, and modifications to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the scope of the present invention.

Claims

1. A photocatalytic reaction device, characterized in that: include: A magnetic stirrer, a reactor body located above the magnetic stirrer, a light source located above the reactor body, and multiple reaction bottles inserted into the reactor body. The reactor body is a cylindrical container with an open upper end, and the side wall is provided with multiple through holes for the reaction bottles to be inserted obliquely. A groove is provided at the contact point between the bottom of the reactor body and the bottom of the reaction bottle. A bracket for fixing the light source is installed on the side wall of the reactor body, and the center of the light source and the center of the bottom surface of the reactor body are located on the same vertical line.

2. The photocatalytic reaction device according to claim 1, characterized in that: A circular boss is provided in the middle of the inner bottom surface of the reactor body, and the plurality of grooves are located on the circular boss and arranged in a circle around the center of the bottom surface.

3. The photocatalytic reaction device according to claim 1, characterized in that: The inner wall of the reactor body is a highly reflective diffuse reflection surface with a reflectivity of ≥85%.

4. The photocatalytic reaction device according to claim 1, characterized in that: The reactor body is integrally formed, and the inner side wall and the bottom surface are connected by an arc transition.

5. The photocatalytic reaction device according to claim 1, characterized in that: The inclination angle of the reaction bottle is 20° to 60°.

6. The photocatalytic reaction device according to claim 1, characterized in that: A loading platform is provided on the upper portion of the magnetic stirrer, and a slot matching the loading platform is provided on the outer side of the bottom of the reactor body, and the loading platform is embedded in the slot.

7. The photocatalytic reaction device according to claim 1, characterized in that: The light source is an LED light source with a power of 40 to 100W.

8. The photocatalytic reaction device according to claim 1, characterized in that: The wavelength range of the light source is 230nm to 840nm.

9. The photocatalytic reaction device according to claim 1, characterized in that: The bracket is composed of a mutually perpendicular transverse support member and a vertical rod. The vertical rod is installed on the side wall of the reactor body. One end of the transverse support member is connected to the vertical rod, and the other end fixes the light source.

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