Abstract: A microdevice for multistage-mixing of process fluids which has plurality of freely-detachable units connected to each other without using pipes, wherein a microchannel for flow of the process fluids and a channel for flow of a heat-exchange medium are formed in the microdevice by mutual connection of a plurality of the units and the microdevice is locally and independently temperature-controllable.

Abstract: When fluids A and B are caused to flow together from a fluid introduction portion into a microreactionchannel, they are divided into a plurality of fluid segments A and B in a diametral section of the microreactionchannel at the entrance side, and are mixed with each other by molecular diffusion to perform multiple reaction while being caused to flow as laminar flows.

Abstract: In a micro chemical apparatus, guide walls as physical barriers are provided at a region where fluid A and fluid B as unmixed raw materials and a product are discharged so that, when the fluid A and the fluid B as raw materials are charged, only the portion in which the fluid A and the fluid B are mixed and allowed to react with each other by molecular diffusion of the raw materials is discharged. As a result, only the product is in the range between the two guide walls, and the product can be selectively taken out of the outlet.

Abstract: When fluids A and B are caused to flow together from a fluid introduction portion into a microreactionchannel, they are divided into a plurality of fluid segments A and B in a diametral section of the microreactionchannel at the entrance side, and are mixed with each other by molecular diffusion to perform multiple reaction while being caused to flow as laminar flows.

Abstract: In a reaction caused by using a microreactor which provides a plurality of supply routes in communication with one reaction channel as a multicylindrical structure having a co-axis and causes a plurality of fluids L1, L2, L3 to flow together in the reaction channel via the respective fluid supply routes, whereby these fluids L1, L2, L3 are coaxially laminated and caused to flow as laminar flows whose sections orthogonal to the co-axis are annular and the fluids are diffused together in a normal direction of contact interfaces thereof to cause the reaction, among the plurality of laminated fluids L1, L2, L3, at least one fluid is constituted by a fluid not participating in the reaction of other fluids.

Abstract: In a microreactor in which a plurality of fluids L1 and L2 are led through their respective feed channels to merge in one reaction channel and react with each other while circulating, a spiral reaction channel is formed by cutting a spiral screw thread on either the outer surface of a round-bar-shaped core member or the inner surface having a circular cross section of an outer cylindrical member and engaging the outer surface of the core member in close contact with the inner surface of the outer cylindrical member.

Abstract: A microdevice for multistage-mixing of process fluids which has plurality of freely-detachable units connected to each other without using pipes, wherein a microchannel for flow of the process fluids and a channel for flow of a heat-exchange medium are formed in the microdevice by mutual connection of a plurality of the units and the microdevice is locally and independently temperature-controllable.

Abstract: There is provided a microdevice which supplies two or more kinds of fluids flowed into itself independently toward a joining region respectively, and which discharges those fluids from the joining region. The microdevice is constituted by a supply channel which supplies each fluid flowed into the microdevice toward the joining region and a discharge channel which discharges the joined fluid from the joining region toward outside of the microdevice, in a manner that a supply channel which supplies at least one kind of the fluid has a plurality of subchannels which supply the fluid supplied into the microdevice toward the joining region, and those subchannels and supply channels are formed so that at least one central axis of the plurality of subchannels and at least one central axis of the supply channel which supplies at least one kind of fluid other than the kind that the subchannel supplies or of the subchannel intersect at one point.

Abstract: The present invention provides a method for advantageously producing an iron oxyhydroxide exhibiting excellent capability of adsorbing harmful substances, such as a phosphrous components and endocrine disrupting chemicals, which are contained in industrial wastewater, exhaust gases, etc., and an adsorbent material comprising the iron oxyhydroxide produced by the method as a main component. Specifically, the present invention provides an adsorbent material produced by a method comprising the steps of: (a) adding a base to an aqueous iron ion-containing solution, adjusting the pH of the resultant mixture to 9 or less, to form a precipitate that contains an iron oxyhydroxide; (b) drying the precipitate at a temperature of 100° C. or lower to obtain an iron oxyhydroxide; (c) contacting the resultant iron oxyhydroxide with water; and (d) subjecting the resultant iron oxyhydroxide to a heat treatment under a gas atmosphere having an inert gas concentration of 80% or greater at a temperature of 100 to 280° C.

Abstract: There is provided a microdevice in which a plurality of fluids L1, L2 and L3 are caused to pass through respective fluid supply passages and flow together in one mixing reaction flow path, and the fluids are diffused in the normal direction of the contact interface thereof while being allowed to flow as a thin layer shaped laminar flow, by which mixing or reaction is carried out. The fluid supply passages are of a concentric multiple cylindrical construction to concentrically laminate the fluids L1, L2 and L3 joined together in the mixing reaction flow path, and the opening width near a joining point of the fluids is reduced to contract the flow.

Abstract: When fluids A and B are caused to flow together from a fluid introduction portion into a microreactionchannel, they are divided into a plurality of fluid segments A and B in a diametral section of the microreactionchannel at the entrance side, and are mixed with each other by molecular diffusion to perform multiple reaction while being caused to flow as laminar flows.

Abstract: The method for producing an aldehyde or ketone compound from a corresponding primary or secondary alcohol at relatively high temperature within a short time with a high yield including a step (1) of reacting a sulfoxide compound with an activating agent to produce an activation reaction product; a step (2) of reacting the activation reaction product with a primary or secondary alcohol to produce an alkoxysulfonium salt; and a step (3) of reacting the reaction product with a base to produce an aldehyde or ketone; wherein at least one of the steps, preferably the step (1) and step (2), are carried out by using a microreactor.

Abstract: The method for producing an aldehyde or ketone compound from a corresponding primary or secondary alcohol at relatively high temperature within a short time with a high yield including a step (1) of reacting a sulfoxide compound with an activating agent to produce an activation reaction product; a step (2) of reacting the activation reaction product with a primary or secondary alcohol to produce an alkoxysulfonium salt; and a step (3) of reacting the reaction product with a base to produce an aldehyde or ketone; wherein at least one of the steps, preferably the step (1) and step (2), are carried out by using a microreactor.

Abstract: A producing apparatus (1) of fine particles includes two pipes constructed by an outer pipe (11) and an inner pipe (21) arranged in a concentric shape. The tip (21a) of the inner pipe (21) is spaced from the tip (11b) of the outer pipe (11) by a comparatively long distance. Fluid II is flowed toward the tip (21a) of the inner pipe (21) within the inner pipe (21). Fluid I is flowed toward the tip of the outer pipe (11) as a continuous phase within the outer pipe (11). The flow velocities of the fluid I and the fluid II within the outer pipe (11) and the inner pipe (21) are set to appropriate values by controlling the operations of respective pumps (14, 24) by commands from a controller (31). Thus, the fluid II exhausted from the tip (21a) of the inner pipe (21) becomes a droplet (3) having a in approximately spherical shape surrounded by the fluid I within the outer pipe (11) and having a predetermined desirable diameter.

Abstract: A classifying apparatus (1) has a flow path (structure) through which an emulsion flows. The flow path is provided between at least two plates (upper plate (2), lower plate (4)) that are separated by a distance smaller than the largest diameter of a liquid droplet included in the emulsion. Emulsion is fed from a supply port (5) provided in the upper plate (2) and can be classified by passing it in the flow path.

Abstract: When fluids A and B are caused to flow together from a fluid introduction portion into a microreactionchannel, they are divided into a plurality of fluid segments A and B in a diametral section of the microreactionchannel at the entrance side, and are mixed with each other by molecular diffusion to perform multiple reaction while being caused to flow as laminar flows.

Abstract: In a micro chemical apparatus, guide walls as physical barriers are provided at a region where fluid A and fluid B as unmixed raw materials and a product are discharged so that, when the fluid A and the fluid B as raw materials are charged, only the portion in which the fluid A and the fluid B are mixed and allowed to react with each other by molecular diffusion of the raw materials is discharged. As a result, only the product is in the range between the two guide walls, and the product can be selectively taken out of the outlet.

Abstract: In a reaction caused by using a microreactor which provides a plurality of supply routes in communication with one reaction channel as a multicylindrical structure having a co-axis and causes a plurality of fluids L1, L2, L3 to flow together in the reaction channel via the respective fluid supply routes, whereby these fluids L1, L2, L3 are coaxially laminated and caused to flow as laminar flows whose sections orthogonal to the co-axis are annular and the fluids are diffused together in a normal direction of contact interfaces thereof to cause the reaction, among the plurality of laminated fluids L1, L2, L3, at least one fluid is constituted by a fluid not participating in the reaction of other fluids.

Abstract: In a microreactor in which a plurality of fluids L1 and L2 are led through their respective feed channels to merge in one reaction channel and react with each other while circulating, a spiral reaction channel is formed by cutting a spiral screw thread on either the outer surface of a round-bar-shaped core member or the inner surface having a circular cross section of an outer cylindrical member and engaging the outer surface of the core member in close contact with the inner surface of the outer cylindrical member.

Abstract: There is provided a microdevice in which a plurality of fluids L1, L2 and L3 are caused to pass through respective fluid supply passages and flow together in one mixing reaction flow path, and the fluids are diffused in the normal direction of the contact interface thereof while being allowed to flow as a thin layer shaped laminar flow, by which mixing or reaction is carried out. The fluid supply passages are of a concentric multiple cylindrical construction to concentrically laminate the fluids L1, L2 and L3 joined together in the mixing reaction flow path, and the opening width near a joining point of the fluids is reduced to contract the flow.