JP4591759B2 - Micro electrochemical reactor - Google Patents

Description

The present invention relates to a microelectrochemical reactor in which an electrochemical reaction is performed.
More specifically, the present invention relates to a microelectrochemical reactor that can efficiently prevent mixing of reaction products.

Prior art documents related to microelectrochemical reactors include the following.
JP 2003-285298 A

FIG. 9 is an explanatory diagram of the main part configuration of a conventional example that is generally used conventionally.
An example of the configuration of a microchannel device that performs separation and analysis by flowing a small amount of liquid is shown.
It consists of three layers of a substrate part 101, a photocurable resin 102, and a light-transmitting cover plate 103 in this order.
In this flow channel device, the uncured photocurable resin is filled between the substrate unit 101 and the cover substrate 103, and then the peripheral portion of the flow channel pattern 104 is cured by a photocuring reaction. Are formed, and the microchannel device is integrally formed.

Here, in the case where a light-transmitting material is used for the substrate unit 101, the sample solution and the reaction solution are caused to flow from the injection ports 105 and 105 ′ on the liquid feeding side by an external pump, thereby causing a reaction in the mixing unit 106. This change can be detected as a change in absorbance, and based on this change, the concentration of the target substance in a small amount of sample liquid can be known.
The mixed liquid is discharged from the waste liquid port 107.

  However, in such an apparatus, one reactant can be taken out, but two reactants cannot be taken out efficiently.

An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a microelectrochemical reactor that can efficiently prevent mixing of reaction products.
In short, when applying an electric voltage between two electrodes formed in the microchannel to cause an electrochemical reaction, a separating means for easily separating an anode reaction product and a cathode reaction product. An object of the present invention is to provide a microelectrochemical reactor provided with

In order to achieve such a problem, in the present invention, in the microelectrochemical reactor according to claim 1,
In a microelectrochemical reactor in which a fluid is caused to flow through a flow path to generate two types of reactants, the separation means is provided in a reaction section of the flow path and separates the two types of reactants, A continuous separation plate that is provided along the center of the flow channel in the flow direction of the reaction section and continuously blocks the flow channel in a direction orthogonal to the flow direction, and is provided in the flow channel so as to face the continuous separation plate. This continuous separation plate and a groove that continuously forms a gap in a direction orthogonal to the flow path direction are provided.

In the microelectrochemical reactor according to claim 2 of the present invention,
In a microelectrochemical reactor in which a fluid is caused to flow through a flow path to generate two kinds of reactants, the separation means is provided in a reaction section of the flow path and separates the two kinds of reactants. The flow path of the reaction section is provided along the flow path center and continuously blocks the flow path in a direction orthogonal to the flow path direction and continuously forms a gap in the direction orthogonal to the flow path and the flow path direction. A continuous separator is provided.

As described above, according to the first aspect of the present invention, the following effects can be obtained.
Since a separation means for separating the two reactants is provided in the reaction section of the flow path, a microelectrochemical reactor capable of efficiently preventing the reaction products from mixing can be obtained.

According to claim 2 of the present invention, there are the following effects.
The separation means is provided along the center of the flow path in the flow path direction of the reaction section and continuously blocks the flow path in the direction orthogonal to the flow path direction and continuously in the direction orthogonal to the flow path and the flow path direction. Since it has the 2nd continuous separator which comprises a clearance gap, a structure can be performed easily and an inexpensive microelectrochemical reactor is obtained.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is an explanatory diagram of a main part configuration of a reference example, FIG. 2 is an AA cross-sectional view of FIG. 1, and FIG. 3 is a BB cross-sectional view of FIG.

In the figure, an electrode 2 and an electrode 3 are formed on an insulating substrate 1.
As the insulating substrate 1, for example, a glass substrate is used.
A flow path forming film 4 is provided on the electrodes 2 and 3.
For the flow path forming film 4, for example, a photoresist or a low melting point glass is used.

The electrode 2 and the electrode 3 are structured to be taken out from the outside of the flow path while being sealed by the flow path forming film 4.
The insulating substrate 5 is bonded to the flow path forming film 4 via the adhesive layer 6.
As the insulating substrate 5, for example, a glass substrate is used.

For example, an adhesive or a photoresist is used for the adhesive layer 6.
The insulating substrate 1, the flow path forming film 4 and the insulating substrate 5 constitute flow paths 7 and 8.
The flow paths 7 and 8 include inflow flow paths 71 and 81, reaction portions 72 and 82 corresponding to the electrodes 2 and 3, and outflow flow paths 73 and 83.

The flow paths 7 and 8 are in contact with each other at the reaction portions 72 and 82.
The separation means 9 is provided in the reaction units 72 and 82 and separates the two reactants.
In this case, the separating means 9 is provided with an intermittent separation plate that is provided along the center of the flow path in the flow path direction of the reaction sections 72 and 82 and intermittently blocks the flow paths 7 and 8 in the direction orthogonal to the flow path direction. Have.
In this case, the intermittent separation plate 9 has a through hole 91 that is intermittent in the flow path direction.

In this case, the through hole 91 is a square hole.
In this case, the intermittent separation plate 9 can be said to be a column in which the columns made of the flow path forming film 4 are arranged.
The insulating substrate 5 is provided with inflow holes 74 and 84 that communicate with the inflow channels 71 and 81 and outflow holes 75 and 85 that communicate with the outflow channels 73 and 83.

In the above configuration, the device of the present invention is manufactured as follows.
An electrode 2 and an electrode 3 are formed on the insulating substrate 1, and a pattern of the flow path forming film 4 is formed thereon.
The flow paths 7 and 8 are formed by the pattern of the flow path forming film 4.

The insulating substrate 5 has inflow holes 74 and 84 and outflow holes 75 and 85, and the adhesive layer 6 is formed on the surface of the substrate 5.
The insulating substrate 1 and the insulating substrate 5 are completed by bonding them together with the adhesive layer 6.

In the above configuration, the following operation is performed.
When a voltage is applied between the electrode 2 and the electrode 3 with the fluid flowing in the flow path 7 and the flow path 8, an electrochemical reaction occurs on the surfaces of the electrode 2 and the electrode 3, and a reaction product is generated.
Separation means 9 prevents mixing of the reaction product of electrode 2 and the reaction product of electrode 3.

As a result,
Since the separation means 9 for separating the two reactants is provided in the reaction sections 72 and 82 of the flow paths 7 and 8, a microelectrochemical reactor capable of efficiently preventing reaction products from mixing is provided. can get.

  Since the separating means 9 has the intermittent separation plate 9 provided along the flow path center in the flow path direction of the reaction portions 72 and 82 and intermittently blocks the flow paths 7 and 8 in the direction orthogonal to the flow path direction. A microelectrochemical reactor capable of efficiently preventing mixing of two reactants is obtained.

  Since the separation plate 9 has the through-holes 91 that are intermittent in the direction of the flow path, a micro electrochemical reactor that can maintain an electrochemical reaction and can efficiently prevent mixing of reaction products is obtained.

Since the through-hole 91 is a square hole, a micro-electrochemical reactor capable of ensuring a wide through-hole area and maintaining an electrochemical reaction efficiently can be obtained.
Since the inflow channels 71 and 81 are separated into two in the channels 7 and 8, a microelectrochemical reactor capable of reliably reacting the two inflowing fluids in the reaction units 72 and 82 is obtained.

FIG. 4 is a diagram for explaining the configuration of the main part of the reference example, FIG. 5 is a sectional view taken along the line CC in FIG. 4, and FIG. 6 is a sectional view taken along the line DD in FIG.
In this embodiment, the inflow hole 11 is provided in the insulating substrate 5 as a common inflow hole in the flow paths 7 and 8.
It is convenient to obtain two reaction products from one fluid.

FIG. 7 is an explanatory view showing the configuration of the main part of another embodiment of the present invention.
In the present embodiment, the separating means 21 is a first continuous separation that is provided along the center of the flow path in the flow path direction of the reaction sections 72 and 82 and continuously blocks the flow path in the direction orthogonal to the flow path direction. Opposite to the continuous separation plate 22, there is a plate 22 and a groove 23 provided in the flow path and continuously forming a gap in a direction orthogonal to the flow path direction.

  As a result, a microelectrochemical reactor can be obtained that can maintain an electrochemical reaction and reliably prevent mixing of two reactants.

FIG. 8 is an explanatory view showing the configuration of the main part of another embodiment of the present invention.
In the present embodiment, the separation means 31 is provided along the center of the flow path in the flow path direction of the reaction sections 72 and 82 and continuously blocks the flow path in the direction orthogonal to the flow path direction and the flow path. It has the 2nd continuous separation plate 32 which comprises the clearance gap 33 continuously in a direction orthogonal to a flow path direction.
As a result, an inexpensive microelectrochemical reactor can be obtained that can be simply configured.

  The insulating substrates 1 and 4 may be not only the insulating substrates 1 and 4 themselves, but also an ordinary substrate having an insulating film formed on the surface thereof. In short, any insulating substrate may be used.

  In the above-described embodiment, it has been described that the insulating substrate 5 is bonded to the flow path forming film 4 via the adhesive layer 6, but the present invention is not limited thereto, and the insulating substrate 5 itself, Alternatively, when the flow path forming film 4 itself has adhesiveness, the adhesive layer 6 is not necessary. For example, when the insulating substrate 5 itself has adhesive properties such as PDMS (polydimethylsiloxane), or when the low melting point glass is used as the flow path forming film 4.

The above description merely shows a specific preferred embodiment for the purpose of explanation and illustration of the present invention.
Therefore, the present invention is not limited to the above-described embodiments, and includes many changes and modifications without departing from the essence thereof.

It is principal part structure explanatory drawing of a reference example. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is principal part structure explanatory drawing of a reference example. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is principal part structure explanatory drawing of the other Example of this invention. It is principal part structure explanatory drawing of the other Example of this invention. It is principal part structure explanatory drawing of the prior art example generally used conventionally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Insulating substrate 2 Electrode 3 Electrode 4 Channel formation film 5 Insulating substrate 6 Adhesive layer 7 Channel 71 Inflow channel 72 Reaction part 73 Outflow channel 74 Inflow hole 75 Outflow hole 8 Channel 81 Inflow channel 82 Reaction Part 83 Outflow channel 84 Inflow hole 85 Outflow hole 9 Separation means 91 Through hole 11 Inflow hole 21 Separation means 22 First continuous separation plate 23 Groove 31 Separation means 32 Second continuous separation plate 33 Gap

Claims (2)

In a microelectrochemical reactor in which a fluid is flowed through a flow path to produce two reactants,
Separation means for separating the two kinds of reactants provided in the reaction section of the flow path,
The separation means is provided along the center of the flow path in the flow path direction of the reaction unit, and continuously separates the flow path in the direction orthogonal to the flow path direction;
A microelectrochemical reactor comprising: the continuous separation plate provided in the flow channel facing the continuous separation plate; and a groove that continuously forms a gap in a direction orthogonal to the flow channel direction. In a microelectrochemical reactor in which a fluid is flowed through a flow path to produce two reactants,
A separation means for separating the two kinds of reactants provided in the reaction section of the flow path;
The separation means is provided along the flow path center in the flow path direction of the reaction unit and continuously blocks the flow path in the direction orthogonal to the flow path direction and continuously in the direction orthogonal to the flow path and the flow path direction. A microelectrochemical reactor comprising a continuous separation plate constituting a gap.

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