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Asymmetric ceramic hollow fibres: New micro-supports for gas-phase catalytic reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
41743 45899 2011 7 PDF Available
Title
Asymmetric ceramic hollow fibres: New micro-supports for gas-phase catalytic reactions
Abstract

Al2O3 hollow fibres fabricated by phase-inversion, followed by sintering at different temperatures (1350, 1400 and 1450 °C) have been employed for the further development of a novel catalytic hollow fibre micro-reactor (CHFMR). After depositing with a 10%CuO/CeO2 catalyst, the catalytic activity of the CHFMR has been compared with that of a conventional fixed-bed reactor using water gas shift (WGS) as a sample reaction. The deposition of catalyst into the finger-like voids was carried out using the sol–gel Pechini method. The Al2O3 hollow fibres were characterized before and after catalyst deposition by BET surface area analysis, Hg porosimetry and SEM–EDS. The catalytic activity tests were performed at P = 1 atm and between T = 200 and 400 °C. It has been observed that the dispersion of the 10%CuO/CeO2 catalyst within the Al2O3 hollow fibres is strongly dependent on the physical and chemical properties of the fibre surface, which are determined by the sintering temperature. Finally, an increase of 20% in the CO conversion of the WGS reaction was observed for the CHFMR when compared with a conventional fixed-bed reactor, since the finger like structure of Al2O3 hollow fibres (Dp = 10 μm) acts as a micro-reactor and improves the heat and mass transfer, and the mixing of gases during the reaction.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (213 K)Download as PowerPoint slideResearch highlights▶ A novel catalytic hollow fibre micro-reactor (CHFMR) is developed. ▶ The catalytic activity of the CHFMR is tested using water-gas shift (WGS) reaction. ▶ The CHFMR improves the heat and mass transfer, and the mixing of gases during the reaction.

Keywords
Al2O3 hollow fibres; Catalytic hollow fibre micro-reactor; Sol–gel Pechini method; The WGS reaction
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Asymmetric ceramic hollow fibres: New micro-supports for gas-phase catalytic reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 393, Issues 1–2, 15 February 2011, Pages 71–77
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us