相关实验视频

Updated: Jun 27, 2025

Hydrogen Production and Utilization in a Membrane Reactor

Hydrogen Production and Utilization in a Membrane Reactor

Published on: March 10, 2023

使用MIL-68 (ln) -nh (sub) /PES混合矩阵膜进行H2净化,提高了气体分离性能

Samy Yousef¹, Andrius Tonkonogovas², Vidas Makarevicius³

¹Department of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, LT-51424 Kaunas, Lithuania.

|April 30, 2024

概括

这项研究用MIL-68 () -NH2金属有机框架 (MOFs) 增强了聚硫 (PES) 膜,用于优质的气体分离. 新的MOF/PES膜显示出更好的透性和选择性,特别是用于净化.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
纳米技术纳米技术

背景情况:

聚硫 (PES) 膜对于气体分离至关重要,但需要提高透性和选择性.
可持续和高效的气体分离技术对清洁能源和工业应用有很高的需求.

研究的目的:

通过结合MIL-68(ln) -NH2金属有机框架 (MOFs) 来提高聚硫 (PES) 膜的气体分离性能.
调查新型MOF/PES混合矩阵膜 (MMM) 的形态,结构,热和气体透特性.

主要方法:

使用相位逆转方法制造混合矩阵膜 (MMM),将10%的MIL-68 (ln) -NH2纳入PES矩阵.
膜表征包括SEM,AFM,BET,XRD,FTIR和TGA-DTG. 这三种表征是最常见的.
对CO2,N2,CH4和H2进行了气体透实验,温度在20-60°C之间.

主要成果:

与整洁的PES膜相比,MOF/PES膜的孔隙性增加 (9%),粗度降低 (87%),孔隙尺寸较小 (32%).
观察到形态,结晶性和热稳定性 (高达22%) 的显著改善.
MOF/PES膜表现出高的气体透性和选择性,在特定温度下为H2/N2和H2/CO2分离提供最佳性能.

结论:

纳入MIL-68 (ln) -NH2 MOFs显著提高了PES膜用于气体分离的性能.
这些基于MOF的PES膜显示出在气体分离中的应用潜力很大,特别是用于净化.

关键词:

气体选择性气体选择性在MIL-68 (ln) -NH (n) (2) 中.膜膜是一种膜.金属有机框架的框架.透性透性的

更多相关视频

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

相关概念视频

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...