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

被引：58

作者：

Bo, Longli ^{[1
]}

Quan, Xie ^{[2
]}

Wang, Xiaochang ^{[1
]}

Chen, Shuo ^{[2
]}

机构：

[1] Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian 710055, Peoples R China

[2] Dalian Univ Technol, Sch Environm & Biol Sci & Technol, Dalian 116024, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 157卷 / 01期

关键词：

microwave; catalytic oxidation; granular activated carbon; platinum; phenolic pollutants;

D O I：

10.1016/j.jhazmat.2007.12.111

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

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.

引用

页码：179 / 186

页数：8

共 31 条

[1] In situ decomposition of PCBs in soil using microwave energy [J].

Abramovitch, RA ;

Huang, BZ ;

Abramovitch, DA ;

Song, JG .

CHEMOSPHERE, 1999, 38 (10) :2227-2236

[2] Reclamation and recycling of waste rubber [J].

Adhikari, B ;

De, D ;

Maiti, S .

PROGRESS IN POLYMER SCIENCE, 2000, 25 (07) :909-948

[3] Microwave assisted wet oxidation of p-nitrophenol [J].

Bo, LL ;

Chen, S ;

Quan, X ;

Liu, XT ;

Zhao, HM .

SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES, 2005, 48 (02) :220-232

[4] Degradation of p-nitrophenol in aqueous solution by microwave assisted oxidation process through a granular activated carbon fixed bed [J].

Bo, Longli ;

Quan, Xie ;

Chen, Shuo ;

Zhao, Huimin ;

Zhao, Yazhi .

WATER RESEARCH, 2006, 40 (16) :3061-3068

[5] RECENT APPLICATIONS OF MICROWAVE-HEATING IN CATALYSIS [J].

BOND, G ;

MOYES, RB ;

WHAN, DA .

CATALYSIS TODAY, 1993, 17 (03) :427-437

[6] Catalytic wet air oxidation of wastewater containing ammonia and phenol over activated carbon supported Pt catalysts [J].

Cao, SL ;

Chen, GH ;

Hu, XJ ;

Yue, PL .

CATALYSIS TODAY, 2003, 88 (1-2) :37-47

[7] Microwave induced reactions of sulfur dioxide and nitrogen oxides in char and anthracite bed [J].

Cha, CY ;

Kim, DS .

CARBON, 2001, 39 (08) :1159-1166

[8] Microwave heated polyol synthesis of carbon nanotubes supported Pt nanoparticles for methanol electrooxidation [J].

Chen, WX ;

Zhao, J ;

Lee, JY ;

Liu, ZL .

MATERIALS CHEMISTRY AND PHYSICS, 2005, 91 (01) :124-129

[9] Emulsion polymerization in a microwave reactor [J].

Correa, R ;

Gonzalez, G ;

Dougar, V .

POLYMER, 1998, 39 (6-7) :1471-1474

[10] Removal of nitrogenous compounds by catalytic wet air oxidation. Kinetic study [J].

Deiber, G ;

Foussard, JN ;

Debellefontaine, H .

ENVIRONMENTAL POLLUTION, 1997, 96 (03) :311-319

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