SGER: Exploratory Research for New Concepts in Ultra-Rapid Cycle Adsorptive Separation

建议类型：CTS-100087建议类型：调查者发起-SGER主要研究人员：Vadim Guliants机构：美国加州大学SGER：超快循环吸附分离空气新概念的探索性研究作为设计微型变压吸附(PSA)氧气浓缩器的一步，该项目测量了氧和氮在低硅X沸石中的晶内扩散系数。这些测量是在单晶渗透装置中使用同位素示踪剂进行的。如果气体扩散系数像预期的那样大，这项工作将导致使用MEMS技术设计和制造一种小型、轻质的氧气浓缩器，供慢性阻塞性肺病患者使用。该装置将在相对较高频率的气压摆动下运行。实验的扩散系数值也可用于常规变压吸附过程的工程设计，以及沸石吸附和传输的理论模拟。

ABSTRACTProposal No.: CTS-100087Proposal Type: Investigator Initiated- SGERPrincipal Investigators: Vadim GuliantsInstitution: University of CincinnatiSGER: Exploratory Research for New Concepts in Ultra-rapid-cycle Adsorptive Separation of AirAs a step in designing a micro-scale pressure-swing-adsorption (PSA) oxygen concentrator, this project measures the intracrystalline diffusion coefficients of oxygen and nitrogen in a low-silica X zeolite. The measurements are being done by use of isotopic tracers in single-crystal permeation apparatus.If the gas diffusion coefficients are as large as expected, this work will lead to the design and fabrication, using MEMS technology, of a small, light-weight oxygen concentrator for use by victims of chronic obstructive pulmonary disease. This device will operate on a relatively high-frequency swing of air pressure. The experimental diffusivity values will also be useful in the engineering of conventional PSA processes as well in the theoretical modeling of zeolite adsorption and transport.