中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (3): 18-22.

• 研究论文 • 上一篇    下一篇

激光促进乙醇氧化偶联反应

康庆华, 钟顺和   

  1. 天津大学化学工程系, 天津 300072
  • 收稿日期:1994-10-17 修回日期:1994-12-31 出版日期:1995-06-10 发布日期:1995-06-10

Laser Stimulated Oxidative Coupling of Ethanol

Kang Qinghua, Zhong Shunhe   

  1. Department of Chemical Engineering, Tianjin University, Tianjin 300072
  • Received:1994-10-17 Revised:1994-12-31 Published:1995-06-10 Online:1995-06-10

PDF

354

被引次数

9 | 7

摘要： 用XRD、IR和脉冲CO2激光,研究了在固体Cu2(PO4)(OH)和Pb2(PO4)2表面上激光促进乙醇氧化偶联的反应性能.实验结果表明:乙醇的定位化学吸附态决定着反应产物的选择性,甲基吸附态(>P=O…H-CH2CH2OH)反应生成1.4-丁二醇,而羟基吸附态(>Pb…OHCH2CH3)则生成乙烯;固体表面构造基元的振动结构是影响激光能量利用率的主要因素,Cu2(PO4)(OH)表面P=O段与O-Cu-O键间的振频差较大,其激光光能的有效利用率高.

关键词: 乙醇, 氧化偶联, 羟基磷酸铜, 磷酸铅, 激光促进表面反应

Abstract: The oxidative coupiing of ethanol stimulated by CO2 laser on the surface of Cu2(PO4)(OH) and Pb3(PO4)2 has been studied using XRD and IR techniques.The resultsshowed that the distribution of reaction products depends strongly on the chemisorptiontypes of ethanol:1,4-butanediol was formed via the methyl-adsorbed ethanol molecules,while the hydroxyl-adsorbed one gave to ethene.The vibrational structures of the surface ofsolid meterials are the basic factor affecting the efficiency of laser photon eiiergy, The higherefficiency of laser photon energy in the case of libethenite appeared due to the greater differ-ence in frequecies between p=O and O-Cu-O bonds.

Key words: ethanol, oxidative coupling, libethenite, lead phosphate, laser stimulated surfacereaction

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