期刊
SURFACE REVIEW AND LETTERS
卷 16, 期 4, 页码 617-621出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218625X09013050
关键词
Bifunctional Fe/ZrO2; reductive dechlorination; chlorobenzene; subcritical water
资金
- National High Technology Research and Development Program of China [2006AA06Z378]
- National Natural Science Foundation of China [20777018]
- National Key Technology Research and Development Program of China [2008BAC32B06-1]
Bifunctional Fe/ZrO2 was prepared by mechanical mixing method, and its bifunctional effect on reductive dechlorination of chlorobenzene in subcritical water was studied. Dechlorination efficiency increased with increasing iron content in catalyst and catalyst amount. Dechlorination efficiency slowed when the iron content in catalyst reached 30%; bifunctional catalyst of Fe/ZrO2 was more efficient in dechlorination of chlorobenzene than Fe alone. Catalyst of Fe (30%)/ZrO2 was characterized by means of X-ray diffraction (XRD), H-2 temperature programmed desorption (H-2-TPD), and N-2 adsorption. The possible mechanism of dechlorination in subcritical water by this bifunctional catalyst was proposed. H+ produced in the water dissociation formed the highly reactive spillover hydrogen on the surface of catalyst, and then reacted with chlorobenzene adsorbed on the catalyst surface by ZrO2 to form benzene and chloride ions.
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