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http://dx.doi.org/10.7464/ksct.2014.20.1.028

Catalytic Nitrate Reduction in Water over Nanosized TiO2 Supported Pd-Cu Catalysts  

Kim, Min-Sung (Department of Chemical and Biological Engineering, Korea University)
Lee, Jiyeon (Department of Chemical and Biological Engineering, Korea University)
Lee, Kwan-Young (GREEN SCHOOL, Korea University)
Publication Information
Clean Technology / v.20, no.1, 2014 , pp. 28-34 More about this Journal
Abstract
In this study, we synthesized $TiO_2$ supports with nanosized crystalline structure by solvothermal method and prepared $TiO_2$ supported Pd-Cu catalysts. It was shown that the crystalline size of $TiO_2$ support in the catalyst influenced on the catalytic activity of nitrate reduction in water. The catalyst with the smaller crystalline size of $TiO_2$ support presented faster nitrate reduction rate, but had low nitrogen selectivity due to high pH environment of reaction medium during the reaction. Through injection of carbon dioxide as a pH buffer, the nitrogen selectivity increased by about 60%. Furthermore, we investigated that the relationships between the catalytic performance and the physicochemical properties of the prepared catalysts characterized by $N_2$ adsoprtion-desorption, X-ray diffraction (XRD), $H_2$-temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS).
Keywords
Catalytic nitrate reduction; Nanosized $TiO_2$; SMSI; Water;
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Times Cited By KSCI : 1  (Citation Analysis)
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