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Ferrimagnetic ceramic adsorbents for cleanup of H2S from exhaust gases
Bernd Halbedel[1] Apostolos Kontogeorgakos[2]
[1]institute of Materials Science, Glass and Ceramic Technology Group, Technische Universitat Ilmenau, PO. Box 10 05 65, D-98684 Ilmenau, Germany [2]NCSR ＂Demokritos＂, Institute of Materials Science, 15310 Aghia Paraskevi Attiki, Greece
文章出处:
《中国颗粒学报：英文版》-2007年5卷1期 -156-161页
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Ferrimagnetic ceramic adsorbents for cleanup of H2S from exhaust gases
Abstract:
Adsorbents that exhibit magnetic properties in addition to other required process-relevant characteristics open up new perspectives for the dry reduction and/or elimination of HES and other sulfur compounds from exhaust gases. These adsorbents eliminate the sulfur compounds from exhaust gases by virtue of their coatings and their magnetic property which makes it possible the use of magnetically assisted and stabilized fluidization in an externally applied magnetic field. In the present paper, the feasibility of the sorptive function of porous ceramic ferrimagnetic beads is ensured by sol-gel coating of zinc oxide without the formation of Zn-Fe-oxides and without considerable decrease of available pore volume. The results of material characterization by SEM, Auger electron spectroscopy, X-ray and mercury-porosity measurements and the loading capacity of a HES/N2 model gas are presented and discussed. The resulting HES loading of the functionalized adsorbent beads is more than 10 times larger than that of the starting material. @ 2007 Chinese Society of Particuolo~v and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V.[著者文摘]
Key words:
Adsorption; Adsorbents; Ferrites; Magnetic materials; Magnetic properties; Sol-gel; Zinc oxide
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Acknowledgements The authors are deeply grateful for the financial support of DAAD, which allowed one of us （A.K.） to visit Ilmenau forsample preparation and scientific project development （G.K.）, and would like to thank Prof. Dr. Dagmar Htilsenberg and Dr. Christian Georgi for useful discussions.
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