The present invention relates to a method for controlling an ultrafast chemical reaction using a microfluidic reactor, and more specifically, the present invention relates to a method for controlling an ultrafast chemical reaction such as the Fries rearrangement reaction and the like by using a microfluidic reactor by the 3D metal printing technique.

A distributor is described for distributing a fluid flow from a smaller to a more broad fluid flow. It comprises a fluid input and a plurality of fluid outputs, and a channel structure in between the fluid input and the plurality of fluid outputs. The channel structure comprises alternatingly bifurcating channel substructures and common channel substructures wherein the substructures are arranged so that fluid exiting different channels from a bifurcating channel substructure mixes in a subsequent common channel substructure, and whereby fluid channels of the bifurcating channel substructure are arranged such that these do not contact the subsequent common channel substructure at the edges thereof.

Methods are disclosed for operating devices in diffusion-limited regimes, where diffusion rates are sufficiently low that device operation can be optimized by taking the rate of diffusion into account when directing devices what actions to take.

The invention discloses a reactor for preparing a formulation. The reactor comprises at least two apertures, a base and at least one sidewall extending flush therefrom, wherein the base and the sidewall together define a mixing chamber with a height h.sub.M and at least one axis of symmetry arranged substantially perpendicular to the base and at least one distance r from the sidewall. A first aperture is arranged within the base or adjacent to the base in the sidewall of the mixing chamber at a height h.sub.A ranging from 0.6 to 0.0 h.sub.M in order to introduce free-flowing materials and/or mixtures to the mixing chamber. The first aperture is configured with a non-return valve disposed therein or adjacent thereto, the non-return valve permitting the introduction of free-flowing materials to the mixing chamber through the aperture, but preventing outflow of free-flowing materials from the mixing chamber through the aperture. The first aperture is formed with an aperture area extending in a range between a minimum and a maximum, the minimum area being 0.05 mm.sup.2 and the maximum area being determined by a value resulting from Volume.sub.mixing chamber [cm.sup.3]/Area.sub.first aperture [cm.sup.2]≈5500.

The present disclosure relates to a method of synthesizing metal nanoparticles, where the method includes mixing a metal precursor with a stabilizing ligand in a first zone of a first fluidic device to form a first mixture and mixing the first mixture with a reductant in a second zone of the first fluidic device to form a second mixture, such that the metal nanoparticles form in the second zone.

A method for producing a chemical reactor, wherein the chemical reactor comprises one or more effective channels which comprise pillar structures, an input connected to one of the effective channels to allow fluid/gas into the effective channels and an output connected to one of the effective channels to remove at least one component of the liquid/gas. The method comprises obtaining an initial design of the reactor, further introducing into the initial design at least a structured area positioned adjacent to an effective channel of the one or more effective channels located at the edge of the initial design, the structured area not being fluidly connected to one of the effective channels, to obtain a further design and the production of the reactor according to the further design.

A multi-autoclave lateral conversion module includes a central mixing process pipe having first and second terminal ends, a heating unit providing heated air at the first terminal end of the central mixing process pipe, two or more gas injection units connected to opposing sides of the central mixing process pipe at a first addition point located between the first and the second terminal ends, and each gas injection unit receiving the process discharge gas from an autoclave unit. The process discharge gas is transmitted from an autoclave unit through the gas injection unit into the central mixing process pipe where it mixes with the process discharge gas from the other autoclave unit, and then the mixed process gases are converted. Process units other than autoclaves can also utilize the module and method provided.

This disclosure relates to organic synthesis, and more particularly to a method for preparing 3-chloro-4-oxopentyl acetate using a fully continuous-flow micro-reaction system. In this method, chlorine and an acetylbutyrolactone-containing liquid are simultaneously transported to a first micro-channel reactor for continuous chlorination to obtain α-acetyl-α-chloro-γ-butyrolactone. The reaction mixture is simultaneously transported to a micro-mixer and a second micro-channel reactor together with a mixed solution of glacial acetic acid, hydrochloric acid and water, and the continuous acylation is carried out to obtain 3-chloro-4-oxopentyl acetate. After quenched with a quenching agent, the reaction mixture was subjected to extraction and separation to obtain the 3-chloro-4-oxopentyl acetate.

Different Au—Pd nanoparticles, ranging from sharp-branched octopods to core@shell octahedra, can be achieved by inline manipulation of reagent flowrates in a microreactor for seeded growth. Significantly, these structures represent different kinetic products, demonstrating an inline control strategy toward kinetic nanoparticle products that should be generally applicable.

It discloses a polyether polyols for preparing flexible polyurethane foam, and a preparation method and application thereof. The method comprises the following steps: (1) carrying out a reaction on phosphorus oxychloride, epichlorohydrin, a first acidic catalyst and an inert solvent in a first microchannel reactor to obtain a chloroalkoxy phosphorus compound; (2) carrying out a reaction on the chloroalkoxy phosphorus compound, glycidol, a second acidic catalyst and an inert solvent in a second microchannel reactor to obtain a hydroxy compound; (3) carrying out a ring-opening reaction on the hydroxy compound, epoxy vegetable oil, a basic catalyst and an inert solvent in a third microchannel reactor to obtain a vegetable oil polyol; and (4) carrying out an addition polymerization reaction on the vegetable oil polyol, propylene oxide and an inert solvent in a fourth microchannel reactor to obtain the polyether polyols for preparing flexible polyurethane foam.