SGER: Nanoporous Membrane Reactor as Molecular Extruder

摘要-LIN-0080761这项研究涉及开发纳米膜反应器作为高效生产化学品的分子挤出机。该反应器包含一层具有催化活性的直纳米孔的无机膜，可以被认为是一束纳米级的反应器管束。通过调整纳米孔尺寸、选择合适的活性涂层物种、优化反应条件，PI可以操纵反应机理或反应路径，以合成传统技术无法获得的高产率或具有特殊性质的分子。这项研究的目的是论证直孔-纳米孔膜的合成方法以及结合它们的膜反应器概念在生产聚乙烯纳米纤维方面的技术可行性。在这一初步探索阶段，将测试直径3-5 nm、长10-100 mm的直孔氧化铝-二氧化硅膜。它们将通过原子层化学气相沉积二氧化硅对直立的无孔氧化铝薄膜进行改性来构建。纳米孔的内孔表面将用茂金属催化剂进行修饰。该反应器将用于合成具有单向取向聚合物链的聚乙烯纳米纤维。

Abstract - Lin - 0080761This research involves the development of a nanomembrane reactor as a molecular extruder for efficient production of chemicals. The reactor contains an inorganic membrane with catalytically active straight nanopores, and can be considered as a bundle of nano-sized reactor tubes. By adjusting the nanopore dimensions, selecting an appropriate active coating species, and optimizing the reaction conditions, the PI can manipulate the reaction mechanism or path for synthesis of molecules at high yield or with special properties, unattainable by the conventional technologies. The research is aimed at demonstrating the synthesis methodology of the straight-nanopore membranes and the technical feasibility of the membrane reactor concept incorporating them, for the production of polyethylene nanofibers.For this initial exploratory phase, alumina-silica membranes with straight pores of 3-5 nm diameter and 10-100 mm in length will be tested. They will be constructed by modifying straight Anopore alumina membranes by atomic layer chemical vapor deposition of silica. The internal pore surfaces of the nanopores will be modified by a metallocene catalyst. The reactor will be tested by using it to synthesize polyethylene nanofibers with polymer chains oriented in one direction.