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矿质氧化物表面过氧化氢的非均相过程研究
  • ISSN号：1674-0068
  • 期刊名称：《化学物理学报》
  • 时间：0
  • 分类：O[理学]
  • 作者机构：[1]中国科学院化学研究所分子动态与稳态结构国家重点实验室、北京分子科学国家实验室,北京100190
  • 相关基金：This work was supported by the Knowledge Innovation Program of the Chinese Academy of Sciences （No.KJCX2-YW-N24, No.KZCX2-YW-Q02-03）;the National Basic Research Program of China of Ministry of Science and Technology of China （No.2011CB403401）; and the National Natural＇ Science Foundation of China （No.40925016, No.40830101, No.21077109, and No.41005070）.
作者： 王炜罡[1], 葛茂发[1], 孙巧[1]
关键词： 动力学, 非均相过程, 光氧化氢, 大气寿命, Kinetics, Hydrogen peroxide, Heterogeneous uptake, Atmospheric lifetime
中文摘要：

利用努森池反应器研究了过氧化氢与大气矿质氧化物的非均相过程，其初始摄取系数分别为（1．00±0．11）×10^-4（α-A12O3）、（1．66±0．23）×10^-4（MgO）、（5．22±0．9）×10^-5（SiO2）、（9．70±1.95）×10^-5（Fe2O3）．除SiO2外，其他氧化物表现出一定催化分解过氧化氢的能力．研究表明过氧化氢在矿物表面的非均相过程是其大气消除的藿要途径，对其大气寿命具有重要影响．

英文摘要：

The interaction of mineral oxides （α-A12O3, MgO, Fe2O3, and SiO2） with hydrogen peroxide was investigated using the Knudsen cell reactor. The initial reactive uptake coefficients for tile commercially available powders are measured as （1.00±0.11）×10-4 for α-A1203, （1.66±0.23）×10-4 for MgO, （9.70±1.95）×10-5 for Fe203, and （5.22±0.9）×10-5 for SiO2. These metal oxide powders exhibit some catalytic behavior toward the decomposition of hydrogen peroxide excluding SiO2. H2O2 can be destroyed on Fe2O3 surface and O2 is formed. The experimental results suggest that the heterogeneous loss on mineral surface can represent an important sink of hydrogen peroxide.

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期刊信息
  • 《化学物理学报》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中国物理学会
  • 主编：杨学明
  • 地址：合肥中国科学技术大学
  • 邮编：230026
  • 邮箱：cjcp@ustc.edu.cn
  • 电话：0551-3601122
  • 国际标准刊号：ISSN：1674-0068
  • 国内统一刊号：ISSN：34-1295/O6
  • 邮发代号:26-62
  • 获奖情况:
  • 1998年获安徽省优秀科技期刊一等奖
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国科学引文索引（扩展库）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:4282