Development of gravity-impervious, transportable chemical processes and creation of specialized reaction systems

1.制作了阿基米德微通道，并用于分离固体颗粒和水。螺旋通道保持水平或垂直，并将浆料引入微螺旋的内端。固体颗粒沿着二次流（迪恩涡）运动，同时，由于重力作用，上升到下壁面。CFD模拟为适用于液/固分离的微螺旋的设计提供了有益的建议.提出了一种利用激光反射形成的干涉条纹测量液滴或液膜局部厚度的新技术。根据激光的波长和液体的折射率来评价液体层的增加高度。这种条纹法在获得快速相变的液膜三维结构方面具有很大的潜力.研制了一种新型的硅/玻璃微流控器件， ...更多信息 对LLS进行改性以选择性地产生亲水/疏水表面。这种改进过程使得在分别引入上部和下部入口的较重的水和较轻的己烷流之间形成稳定的双层层流界面成为可能。在连续流动的微管反应器中制备了CdSe纳米晶。研究了反应条件对纳米晶光学性质的影响。结果表明，微流反应器有利于制备粒径分布窄的纳米晶.以戊二醛和对甲醛为交联剂，将α-胰凝乳蛋白酶固定在聚四氟乙烯（PTFE）微管内壁上。当底物浓度与酶浓度相当时，微管内的初始反应速率随酶浓度的增加而增加，而在均相间歇式反应器中，在较高的酶浓度范围内，初始反应速率下降.上述结果可用于设计不受重力影响的可运输化工过程，并可应用于特种化学品的生产。少

1. An Archimedean microchannel was fabricated and used to separate solid particles from water. The spiral channel was held either horizontally or vertically, and slurries were introduced into the inner end of the microspiral. Solid particles moved along with the secondary flow (Dean vortex), and, at the same time, ascended to the lower walls due to the gravity. CFD simulation gave beneficial suggestions for designs of microspirals applicable to liquid/solid separation.2. A novel technique to measure the local thickness of a droplet or a liquid film was developed by using an interference fringe pattern that was formed by reflecting laser lights. The incremental height of the liquid layer was evaluated from the wavelength of the laser light and the refractive index of the liquid. This fringe method has great potential to obtain the three dimensional structure of liquid films which transform rapidly.3. A novel silicon/glass microfluidic device was developed, in which microchannel inner wa … More lls were modified to produce hydrophilic/hydrophobic surfaces selectively. This modification procedure made it possible to form a stable two-layer laminar flow interface between a flow of heavier water and lighter hexane, which were introduced into the upper and lower inlets, respectively.4. CdSe nanocrystals were prepared in a continuous-flow microtube reactor. Effects of reaction conditions on optical properties of the nanocrystals were investigated. The results showed that the micro flow reactor was beneficial for preparation of nanocrystals with narrow size distributions.5. a-Chymotrypsin was immobilized on the inner surface of a PTFE microtube by using glutalaldehyde and parahormaldehyde as cross linkers. The initial reaction rate in the microtubes increased with increasing enzyme concentration even when the substrate concentration was equivalent to the enzyme concentration, while those in the homogeneous batchwise reactor decreased in the range of higher enzyme concentrations.6. The above results were summarized to design gravity-impervious, transportable chemical processes which could be applied to production of specialty chemicals. Less