Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

Modified diatomite-supported CuO-TiO2 composite: Preparation, characterization and catalytic CO oxidation

(2016) Modified diatomite-supported CuO-TiO2 composite: Preparation, characterization and catalytic CO oxidation. Journal of the Taiwan Institute of Chemical Engineers.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

Modified diatomite (acid treated and ZrO2-coated diatomite) coated by nano copper and titanium mixed oxides was used to investigate the catalytic oxidation of carbon monoxide. The prepared catalysts were characterized by Brunauer-Emmett-Teller (BET) surface area, field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), temperature-programmed reduction (TPR), porosimetry, and X-ray photoelectron spectroscopy (XPS). Catalytic behavior for CO oxidation was studied in different conditions in a tubular reactor packed with catalyst. The variation of catalytic activity of the prepared composite catalysts with different molar fractions of CuO and TiO2 for CO oxidation in different reaction temperatures was investigated. The catalytic activity of catalyst was dependent on the concentration of coated catalyst over diatomite, reaction temperature and retention time. The results illustrated that diatomite is the promising candidate for catalyst support due to its unique characteristics. It was found that CO conversion of 100 can be achieved at 220 °C over catalyst with 70 mol CuO and 30 mol TiO2 content. © 2015 Taiwan Institute of Chemical Engineers.

Item Type: Article
Keywords: Carbon; Carbon monoxide; Catalyst activity; Catalysts; Catalytic oxidation; Copper oxides; Nanocomposites; Oxidation; Scanning electron microscopy; Titanium oxides; X ray diffraction; X ray photoelectron spectroscopy, Brunauer-emmett-teller surface areas; Catalytic behavior; Composite catalysts; Diatomite; Field emission scanning electron microscopes; Reaction temperature; Temperature-programmed reduction; Tubular reactors, Catalyst supports
Page Range: pp. 252-258
Journal or Publication Title: Journal of the Taiwan Institute of Chemical Engineers
Volume: 58
Publisher: Taiwan Institute of Chemical Engineers
Identification Number: 10.1016/j.jtice.2015.05.030
ISSN: 18761070
Depositing User: مهندس جمال محمودپور
URI: http://eprints.muk.ac.ir/id/eprint/670

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