催化超临界水氧化偏二甲肼

葛红光; 甄宝勤; 赵思珍; 陈开勋; 郭小华; 陈丽华

环境化学

催化超临界水氧化偏二甲肼

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葛红光, 甄宝勤, 赵思珍, 陈开勋, 郭小华, 陈丽华. 催化超临界水氧化偏二甲肼[J]. 环境化学, 2005, 24(5): 542-544.

引用本文:

葛红光, 甄宝勤, 赵思珍, 陈开勋, 郭小华, 陈丽华. 催化超临界水氧化偏二甲肼[J]. 环境化学, 2005, 24(5): 542-544.

GE Hong-guang, ZHEN Bao-qin, ZHAO Si-zhen, CHEN Kai-xun, GUO Xiao-hua, CHEN Li-hua. CATALYTIC OXIDATION OF UNSYMMETRICAL DIMETHY HYDRAZINE IN SUP ERCRITICAL WATER[J]. Environmental Chemistry, 2005, 24(5): 542-544.

Citation:

GE Hong-guang, ZHEN Bao-qin, ZHAO Si-zhen, CHEN Kai-xun, GUO Xiao-hua, CHEN Li-hua. CATALYTIC OXIDATION OF UNSYMMETRICAL DIMETHY HYDRAZINE IN SUP ERCRITICAL WATER[J]. Environmental Chemistry, 2005, 24(5): 542-544.

催化超临界水氧化偏二甲肼

1.
陕西理工学院化学系, 汉中, 723000;
2.
西北大学化工学院, 西安, 710069
基金项目:
陕西省教育厅基金资助项目(04JK307)

陕西理工学院基金资助项目(SLG0321)

CATALYTIC OXIDATION OF UNSYMMETRICAL DIMETHY HYDRAZINE IN SUP ERCRITICAL WATER

1.
Department of Chemistry, Shaanxi University of Technology, Hanzhong 723001;
2.
College of Chemical Engineering, Northwest University, Xi' an, 710069
Fund Project:

摘要: 采用CuO/γ-Al2O3和MnO2/γ-Al2O3为催化剂,H2O2为氧化剂,在固定床反应器中进行催化超临界水氧化偏二甲肼实验.结果表明,CuO和MnO2对偏二甲肼的氧化降解具有显著的促进作用.偏二甲肼的去除率随反应温度和压力的升高、停留时间的延长而提高.在24—26MPa、400—450℃条件下,数秒钟内COD去除率可达到99%以上.显示出催化超临界水氧化技术的高效性.催化剂CuO/γ-Al2O3的催化效果优于MnO2/γ-Al2O3.进一步研究表明,偏二甲肼催化超临界水氧化为·OH引发的自由基反应,最终氧化产物为CO2,N2和H2O.
- 超临界水氧化 /
- 偏二甲肼 /
- 催化剂
Abstract: The catalytic oxidation of unsymmetrical dimethyl hydrazine (UDMH) was investiga ted in supercritical water using CuO/γ-Al2O3 and MnO2/γ-Al 2O3 as catalysts and H2O2 as a oxidant in a packed-bed flow reactor. The results indicate that CuOand MnO2 catalysts have th e desired effects of accelerating the UDMH disappearance. The higher removal of UDMH was obtained at higher temperature, higher pressure and longer reside nce time. The 99% removal of COD was achieved at 24—26MPa and 400—450℃ in a few seconds. It showed that catalytic supercritical water oxidation was a bette r technology on UDMH removal. The catalytic effect of catalyst CuO/γ-Al2 O3 was better than MnO2/γ-Al2O3 in supercritical water oxidation process of UDMH. The more investigation showed that catalytic oxi dation of UDMH was free radical reaction caused by ·OH. The final products were N2, CO2 and H2O after a series of complicated reactions.
- supercritical water oxidation /
- unsymmetrical dimet hyl hydrazine /
- catalysts

[1]

向波涛,王涛,杨基础等,一种新兴的高效废物处理技术--超临界水氧化法.化工进展,1997,16(3):39-44
[2] Motonobu Goto, Takatsugu Nada, Akane Ogata et al.,Supercritical Water Oxidation for The Destruction of Municipal Excess Sludge and Alcohol Distillery Wastewater of Molasses.Supercritical Fluids,1998,13(3):277-282
[3] 漆新华,庄源益,袁有才,苯胺的超临界水氧化研究,环境化学, 2001,20(5):432-436
[4] Yu Jianli, Savage Phillip E, Phenol Oxidation over CuO/Al₂O₃ in Supercritical Water,Applied Catalysis B: Environmental,2000,28(4):275-288
[5] Lin Kuen-Song, Wang H Paul, Yang Y W, Supercritical Water Oxidation of 2-chlorophenol Effected by Li+ and CuO/Zeolites.Chemosphere,1999,39(9):1385-1396
[6] 王尚弟,孙俊全,催化剂工程导论.北京:化学工业出版社,2001,39-48
[7] 葛红光,陈开勋,张志杰等, 超临界水氧化偏二甲肼废水研究.化工环保,2004,24(2):83-85

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葛红光, 甄宝勤, 赵思珍, 陈开勋, 郭小华, 陈丽华. 催化超临界水氧化偏二甲肼[J]. 环境化学, 2005, 24(5): 542-544.

引用本文:

葛红光, 甄宝勤, 赵思珍, 陈开勋, 郭小华, 陈丽华. 催化超临界水氧化偏二甲肼[J]. 环境化学, 2005, 24(5): 542-544.

Citation:

催化超临界水氧化偏二甲肼

1. 陕西理工学院化学系, 汉中, 723000;
2. 西北大学化工学院, 西安, 710069

收稿日期: 2004-12-02

基金项目:

陕西省教育厅基金资助项目(04JK307)

陕西理工学院基金资助项目(SLG0321)

关键词:

摘要: 采用CuO/γ-Al2O3和MnO2/γ-Al2O3为催化剂,H2O2为氧化剂,在固定床反应器中进行催化超临界水氧化偏二甲肼实验.结果表明,CuO和MnO2对偏二甲肼的氧化降解具有显著的促进作用.偏二甲肼的去除率随反应温度和压力的升高、停留时间的延长而提高.在24—26MPa、400—450℃条件下,数秒钟内COD去除率可达到99%以上.显示出催化超临界水氧化技术的高效性.催化剂CuO/γ-Al2O3的催化效果优于MnO2/γ-Al2O3.进一步研究表明,偏二甲肼催化超临界水氧化为·OH引发的自由基反应,最终氧化产物为CO2,N2和H2O.

English Abstract

CATALYTIC OXIDATION OF UNSYMMETRICAL DIMETHY HYDRAZINE IN SUP ERCRITICAL WATER

1. Department of Chemistry, Shaanxi University of Technology, Hanzhong 723001;
2. College of Chemical Engineering, Northwest University, Xi' an, 710069

Received Date: 2004-12-02

Fund Project:

Keywords:

Abstract: The catalytic oxidation of unsymmetrical dimethyl hydrazine (UDMH) was investiga ted in supercritical water using CuO/γ-Al2O3 and MnO2/γ-Al 2O3 as catalysts and H2O2 as a oxidant in a packed-bed flow reactor. The results indicate that CuOand MnO2 catalysts have th e desired effects of accelerating the UDMH disappearance. The higher removal of UDMH was obtained at higher temperature, higher pressure and longer reside nce time. The 99% removal of COD was achieved at 24—26MPa and 400—450℃ in a few seconds. It showed that catalytic supercritical water oxidation was a bette r technology on UDMH removal. The catalytic effect of catalyst CuO/γ-Al2 O3 was better than MnO2/γ-Al2O3 in supercritical water oxidation process of UDMH. The more investigation showed that catalytic oxi dation of UDMH was free radical reaction caused by ·OH. The final products were N2, CO2 and H2O after a series of complicated reactions.

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催化超临界水氧化偏二甲肼

CATALYTIC OXIDATION OF UNSYMMETRICAL DIMETHY HYDRAZINE IN SUP ERCRITICAL WATER

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催化超临界水氧化偏二甲肼

English Abstract

CATALYTIC OXIDATION OF UNSYMMETRICAL DIMETHY HYDRAZINE IN SUP ERCRITICAL WATER

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