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    陈硕

    • 教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:环境学院
    • 学科:环境工程. 环境科学
    • 办公地点:大连理工大学环境学院B717
    • 联系方式:0411-84706263
    • 电子邮箱:shuochen@dlut.edu.cn

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    Preparation and characteristics of carbon-supported platinum catalyst and its application in the removal of phenolic pollutants in aqueous solution by microwave-assisted catalytic oxidation

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    论文类型:期刊论文

    发表时间:2008-08-30

    发表刊物:JOURNAL OF HAZARDOUS MATERIALS

    收录刊物:SCIE、EI、Scopus

    卷号:157

    期号:1

    页面范围:179-186

    ISSN号:0304-3894

    关键字:microwave; catalytic oxidation; granular activated carbon; platinum; phenolic pollutants

    摘要:Granular activated carbon-supported platinum (Pt/GAC) catalysts were prepared by microwave irradiation and characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). Pt particles dispersing onto the surface of GAC could be penetrated by microwave and acted as "reaction centre" in the degradations of p-nitrophenol (PNP) and pentachlorophenol (PCP) in aqueous solution by microwave-assisted catalytic oxidation. The reaction was carried out through a packed bed reactor under ambient pressure and continuous flow mode. Under the conditions of microwave power 400 W, influent flow 6.4 mL min-' and air flow 120 mL min', phenolic solutions with high concentration (initial concentrations of PNP and PCP solutions were 1469 and 1454 mg L- 1, respectively) were treated effectively by PUGAC, 86% PNP and 90% PCP were degraded and total organic carbon (TOC) removal reached 85% and 71 %, respectively. Compared with GAC, loaded Pt apparently accelerated oxidative reaction so that PUGAC had a better degrading and mineralizing efficiencies for PNP. Hydraulic retention time was only 16 min in experiment, which was shortened greatly compared with catalytic wet air oxidation. Pyrolysis and oxidation of phenolic pollutants occurred simultaneously on the surface of PUGAC by microwave irradiation. (c) 2008 Elsevier 13N. All rights reserved.