Abstract:
The present disclosure relates to the novel multistep procedure for preparation of polymer monoliths for use in solvent exchange, such as methods to exchange and activate fluoride ions on a flow through microfluidic chip for subsequent chemical synthesis. Methods according to the present disclosure include the application of such microfluidic platforms for rapid F18 radiosynthesis on a flow through microfluidic chip with high efficiency, followed by a subsequent nucleophilic fluorination reaction. Various other methods of exchanging and activating fluoride ions on a flow through microfluidic chip are also disclosed. Methods incorporating features of the present invention can be applicable to any flow through microfluidic device in any field, such as radiosyntheses, chemical syntheses, concentration of ions for environmental analyzes and sample preparation such as concentrating minute amounts of analyte to improve the downstream detection.
Abstract:
A microreactor device (100) comprises a microcircuit (110) defining a reaction microchamber (112) containing a liquid and reaction medium (114), in which a chemical reaction takes place generating the gas (116), and is characterized in that the device (100) is disposed substantially vertically or inclined, defining an upper part (120) and a lower part (130) of the microchamber, and in that means (150) are provided in the upper part (120) of the said microcircuit for the in situ collection and removal of the gas formed during the reaction.
Abstract:
The invention described herein concerns microchannel apparatus that contains, within the same device, at least one manifold and multiple connecting microchannels that connect with the manifold. For superior heat or mass flux in the device, the volume of the connecting microchannels should exceed the volume of manifold or manifolds. Methods of conducting unit operations in microchannel devices having simultaneous disrupted and non-disrupted flow through microchannels is also described.
Abstract:
Systems and methods are disclosed for synthesizing one or more simple alcohols from mixtures including organic acids, water, and a superparamagnetic catalyst exposed to fluctuating magnetic fields under ambient conditions.
Abstract:
An automated radiopharmaceutical production and quality control system includes a particle accelerator, a radiopharmaceutical micro-synthesis subsystem, and quality control subsystem. The micro-accelerator of the improved biomarker generator is optimized for producing radioisotopes useful in synthesizing radiopharmaceuticals in quantities on the order of multiple unit doses, allowing for significant reductions in size, power requirements, and weight when compared to conventional radiopharmaceutical cyclotrons. The radiopharmaceutical micro-synthesis subsystem encompasses a small volume chemical synthesis system comprising a microreactor and/or a microfluidic chip and optimized for synthesizing the radiopharmaceutical in small quantities, allowing for significant reductions in processing time and in the quantity of radioisotope required. The automated quality control subsystem is used to test the composition and characteristics of the radiopharmaceutical to ensure that it is safe to inject.
Abstract:
The disclosed technology relates to an apparatus, comprising: at least one microchannel, the microchannel comprising at least one heat transfer wall; a porous thermally conductive support in the microchannel in contact with the heat transfer wall; a catalyst or a sorption medium supported by the porous support; and a heat source and/or heat sink in thermal contact with the heat transfer wall.
Abstract:
In various implementations, methanol is produced using a (CO+H2) containing synthesis gas produced from a combined POX plus EHTR or a combined ATR plus EHTR at a pressure of 70 bar to 100 bar at the correct stoichiometric composition for methanol synthesis so that no feed gas compressor is required for the feed to the methanol synthesis reactor loop.
Abstract translation:在各种实施方案中,使用由组合的POX加EHTR或组合的ATR加EHTR产生的(CO + H 2)的合成气在70巴至100巴的压力下以合适的化学计量组成用于甲醇合成来生产甲醇,因此不存在 进料气压缩机是进料到甲醇合成反应器回路所必需的。
Abstract:
The invention relates to a reaction device which is used to study the behavior of a catalyst in the presence of reactants. The inventive device includes: various different mass flow regulators, which are used to supply a known controlled stream of gases, a pump which supplies the system with liquid reactants from a container, a hot box, wherein there have been placed a supply current evaporator and preheater, a valve which can be used to select the process path, a reactor into which the catalyst is introduced inside a furnace, a system which can be used to separate the liquid and gaseous products by cold condensation under pressure and which controls the pressure in the line of output gases, and a system for controlling the level in the decantation operation, the system being automated and computerized.
Abstract:
A microreactor device (100) comprises a microcircuit (110) defining a reaction microchamber (112) containing a liquid and reaction medium (114), in which a chemical reaction takes place generating the gas (116), and is characterized in that the device (100) is disposed substantially vertically or inclined, defining an upper part (120) and a lower part (130) of the microchamber, and in that means (150) are provided in the upper part (120) of the said microcircuit for the in situ collection and removal of the gas formed during the reaction.
Abstract:
This invention describes gas-solid, liquid-solid and gas-solid-liquid processes in microchannels devices including such processes as heterogeneous catalysis, particle formation, particle attrition, particle separation and adsorption or desorption of selected species. Various processes can be enhanced by the unique properties of microchannels such as the predominance of laminar flow, high rates of shear, high rates of heat transfer and high rates of mass transfer. Also encompassed by this invention are methods for the introduction to and removal from microchannels of particle containing fluid streams.