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New catalytic reactors prepared from symmetric and asymmetric ceramic hollow fibres

Paper ID Volume ID Publish Year Pages File Format Full-Text
40513 45857 2013 10 PDF Available
Title
New catalytic reactors prepared from symmetric and asymmetric ceramic hollow fibres
Abstract

In this study, asymmetric and symmetric Al2O3 hollow fibres were employed as a support of a 10% CuO/CeO2 catalyst in the development of an asymmetric hollow fibre reactor (AHFR) and a symmetric hollow fibre reactor (SHFR), respectively. The 10% CuO/CeO2 catalyst was successfully deposited in both Al2O3 hollow fibre substrates by the sol–gel Pechini method. The impregnated fibres were characterized by Ar permeability, Hg porosimetry, X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution optical microscopy. The water gas shift (WGS) reaction was chosen as a sample reaction to compare the performances of both AHFR and SHFR with a traditional fixed bed reactor (FBR). The catalytic activity tests in the FBR were carried out using the powder ground from either the asymmetric or symmetric Al2O3 hollow fibre impregnated with 10% CuO/CeO2. Two different configurations, “dead-end” and “open-end”, were studied in the AHFR and SHFR. The experimental results show that, despite the differences observed between the AHFR and SHFR, both reactors offer important advantages over conventional FBRs including high catalytic activity along with a better selectivity.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (139 K)Download as PowerPoint slideHighlights► Two new catalytic hollow fibre based reactors are developed: SHFR and AHFR. ► Dimension of finger-like and sponge-like regions determine the catalyst particle size. ► AHFR and SHFR performance was compared with that in a FBR during the WGS reaction. ► AHFR and SHFR design improves the mass transfer allowing an enhanced H2 production.

Keywords
Al2O3 hollow fibres; Asymmetric; Symmetric; Catalyst; Flow-through operation
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New catalytic reactors prepared from symmetric and asymmetric ceramic hollow fibres
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 456, 10 April 2013, Pages 1–10
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