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H2O超声过程中H2O2生成动力学

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葛建团, 曲久辉, 王国华. H2O超声过程中H2O2生成动力学[J]. 环境化学, 2004, 23(2): 140-144.
引用本文: 葛建团, 曲久辉, 王国华. H2O超声过程中H2O2生成动力学[J]. 环境化学, 2004, 23(2): 140-144.
shu
GE Jian-tuan, QU Jiu-hui, WANG Guo>hua . PRODUCTION DYNAMICS OF H2O2 DURING SONOLYSIS OF H2O[J]. Environmental Chemistry, 2004, 23(2): 140-144.
Citation: GE Jian-tuan, QU Jiu-hui, WANG Guo>hua . PRODUCTION DYNAMICS OF H2O2 DURING SONOLYSIS OF H2O[J]. Environmental Chemistry, 2004, 23(2): 140-144.
shu

H2O超声过程中H2O2生成动力学

  • 1.

    中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京, 100085

  • 基金项目:

    国家杰出青年基金(No.50225824)

    王宽诚教育基金会资助项目

PRODUCTION DYNAMICS OF H2O2 DURING SONOLYSIS OF H2O

  • 1.

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085

  • Fund Project:

  • 摘要: 采用50kHz超声清洗槽式声化学反应器,以纯水为空化液体,研究了超声过程中H2O2生成动力学.分别探讨了空化气体种类(Ar,O2)及组成与流量、空化液体体积与反应器形状对H2O2生成速率及产率的影响.结果表明,超声过程中H2O2的生成可采用零级反应动力学方程来进行描述.在此频率下和考察范围内,采用Ar作为空化气体比O2更有利于H2O2的生成.当混合气体组成为Ar∶O2=70∶30(V/V)时,H2O2的生成速率最快.随着空化气体流量的增加,H2O2产率增加,随后降低.增加空化液体的体积,H2O2的生成速率降低.与锥形瓶相比,圆底烧瓶中H2O2的产率明显降低.
    Abstract: The production dynamics of H2O2 during sonolysis of H2O in an ultrasonic cleaning bath(50 kHz,output power 150 W)has been studied.The parameters such as operating gas(argon/oxygen)composition,operating gas flow rate,sonication liquid volume and the configuration of the reactors have been investigated.The experimental results show that the production of H2O2 accords with zero order reaction dynamics.Argon as operating gas is more favorable for the production of H2O2 than oxygen.The H2O2 yield reaches a maximum at the ratio of Ar/O2=70/30(V/V).The rate of H2O2 production first increases with increasing operating gas flow rate,then decreases.The increases in liquid volume reduce the oproction rate of H2O2.In comparison with conical flask,the production of H2O2 in round bottom flask is much lower.
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  • [1] Ince N H,Tezcanli G,Belen R K et al.,Ultrasound as a Catalyzer of Aqueous Reaction Systems:the State of the Ar and Environmental Applications.Appl.Cat.B,2001,29:167-176
    [2] Adewuyi Y G,Sonochemistry:Environmental Science and Engineering Applications.Ind.Eng.Res.,2001,40:4681-4715
    [3] Kormann C,Bahnemann D,Hoffmann M R,Photocatalytic Production of H2O2 and Organic Peroxides in Aqueous Suspensions of TiO2,ZnO,and Desert Sand.Environ.Sci.Technol.,1988,22:798-806
    [4] Suslick K S,Ultrasound:Its Chemical,Physical,and Biological Effects.VCH,New York,1988
    [5] Hart E J,Henglein A,Free Radical and Free Atom Reactions in the Sonolysis of Aqueous Iodine and Formate Solutions.J.Phys.Chem.,1985,89:4342-4347
    [6] Nikitenko S I,Isotope Effect in Hydrogen Peroxide Formation during H2O and D2O Sonication.Ultrasonics Sonochem.,2000,7:249-253
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  • 收稿日期:  2003-04-03
葛建团, 曲久辉, 王国华. H2O超声过程中H2O2生成动力学[J]. 环境化学, 2004, 23(2): 140-144.
引用本文: 葛建团, 曲久辉, 王国华. H2O超声过程中H2O2生成动力学[J]. 环境化学, 2004, 23(2): 140-144.
shu
GE Jian-tuan, QU Jiu-hui, WANG Guo>hua . PRODUCTION DYNAMICS OF H2O2 DURING SONOLYSIS OF H2O[J]. Environmental Chemistry, 2004, 23(2): 140-144.
Citation: GE Jian-tuan, QU Jiu-hui, WANG Guo>hua . PRODUCTION DYNAMICS OF H2O2 DURING SONOLYSIS OF H2O[J]. Environmental Chemistry, 2004, 23(2): 140-144.
shu

H2O超声过程中H2O2生成动力学

  • 1. 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京, 100085
  • 收稿日期:  2003-04-03
基金项目:

国家杰出青年基金(No.50225824)

王宽诚教育基金会资助项目

摘要: 采用50kHz超声清洗槽式声化学反应器,以纯水为空化液体,研究了超声过程中H2O2生成动力学.分别探讨了空化气体种类(Ar,O2)及组成与流量、空化液体体积与反应器形状对H2O2生成速率及产率的影响.结果表明,超声过程中H2O2的生成可采用零级反应动力学方程来进行描述.在此频率下和考察范围内,采用Ar作为空化气体比O2更有利于H2O2的生成.当混合气体组成为Ar∶O2=70∶30(V/V)时,H2O2的生成速率最快.随着空化气体流量的增加,H2O2产率增加,随后降低.增加空化液体的体积,H2O2的生成速率降低.与锥形瓶相比,圆底烧瓶中H2O2的产率明显降低.

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