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Effect of Co addition for carburizing process of Ti-oxide/SiO2 into TiC/SiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
43613 45979 2007 6 PDF Available
Title
Effect of Co addition for carburizing process of Ti-oxide/SiO2 into TiC/SiO2
Abstract

Lowering the carburization temperature of Ti-oxide into TiC down to 1173 K could be achieved by the addition of Co. Co-promoted TiC/SiO2 catalysts were prepared by the temperature programmed reaction (TPR) method. Co–Ti/SiO2 precursors were prepared by use of the successive impregnation method (sc) and the co-impregnation method (co). Samples were characterized by X-ray absorption fine structure (XAFS) measurements and X-ray diffraction (XRD) results. The carburization degree of TiC was affected by the method of Co addition. The carburization degree of sc Co–TiC/SiO2 was better than that of co Co–TiC/SiO2. The activity of thiophene hydrodesulfurization reaction at 693 K on sc Co–TiC/SiO2 was higher than that on co Co–TiC/SiO2. The HDS activity was related to the carburization degree of TiC.

Graphical abstractLowering the carburization temperature of Ti-oxide into TiC down to 1173 K could be achieved by the addition of Co. Co-promoted TiC/SiO2 catalysts were prepared by the temperature programmed reaction (TPR) method. Co–Ti/SiO2 precursors were prepared by use of the successive impregnation method (sc) and the co-impregnation method (co). Samples were characterized by X-ray absorption fine structure (XAFS) measurements and X-ray diffraction (XRD) results. The carburization degree of TiC was affected by the method of Co addition. The carburization degree of sc Co–TiC/SiO2 was better than that of co Co–TiC/SiO2. The activity of thiophene hydrodesulfurization reaction at 693 K on sc Co–TiC/SiO2 was higher than that on co Co–TiC/SiO2. The HDS activity was related to the carburization degree of TiC. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
TiC catalyst; XAFS; Co additive; Carburization
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Effect of Co addition for carburizing process of Ti-oxide/SiO2 into TiC/SiO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 323, 30 April 2007, Pages 104–109
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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