Carbon Membranes with Extremely High Separation Factors and Stability

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Sandra Rodrigues (Author) Other; Márcia Andrade (Author) FEUP; J. Moffat (Author) Other; Fernão D. Magalhães (Author) FEUP; Adélio Mendes (Author) FEUP

Journal

Title: Energy Technology

Vol. 7 No. 4

ISSN: 2194-4288

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 6 Citations

INSPEC

Associated Projects

LEPABE-2-ECO-INNOVATION - LEPABE-2-ECO-INNOVATION

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Other information

Authenticus ID: P-00Q-E3B

DOI: 10.1002/ente.201801089

Abstract (EN): For some time, carbon molecular sieve membranes (CMSMs) have been promoted as energy-efficient candidates for gas separation due to their high selectivity, permeability, and stability in chemically aggressive environments. Nevertheless, these membranes have not yet been made into commercial products due to a significant decrease in performance when exposed to humidity and/or oxygen. Herein, disruptive CMSMs with extremely high separation performance and stability, even in the presence of humidity, are reported. The carbon membranes are prepared from a renewable, low-cost precursor with a single carbonization step. Water vapor adsorption/desorption studies demonstrate that these membranes have a linear water vapor adsorption isotherm, characteristic of a homogeneous distribution of hydrophilic sites on the pore surfaces, allowing for water molecules to hop continuously between sites and avoiding the formation of pore-blocking water clusters. These results are a breakthrough toward bringing this new type of membrane to a commercial level.

Language: English

Type (Professor's evaluation): Scientific