Probing intermediates and intermediate process in chemical reactions with positronium

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Probing intermediates and intermediate process in chemical reactions with positronium

更新时间：2021-04-09

- Probing intermediates and intermediate process in chemical reactions with positronium
- NUCLEAR TECHNIQUES Issue 10, (1994)
- 作者机构：
  
  中国科学院高能物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ03
- Published：01 October 1994
- 稿件说明：
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[1]曹惠民,王蕴玉.用Ps作探针研究化学反应中间态及中间过程[J].核技术,1994(10):578-582.

Probing intermediates and intermediate process in chemical reactions with positronium[J]. Nuclear techniques, 1994, (10).
[1]曹惠民,王蕴玉.用Ps作探针研究化学反应中间态及中间过程[J].核技术,1994(10):578-582. DOI：

Probing intermediates and intermediate process in chemical reactions with positronium[J]. Nuclear techniques, 1994, (10). DOI：

摘要

介绍了一种奇特原子－正电子素的基本性质及作为探针研究化学反应历程、探测中间产物的实用性。为了检验这种应用的可能性，选用Ｒｈ（Ⅲ）与乙烯作用制备Ｒｈ（Ｉ）催化剂的合成反应．根据观测到的正电子素湮没寿命及强度随反应时间的异常变化讨论了中间态的Ｒｈ（Ⅱ）的形成及反应机理。

Abstract

The characteristics of positronium

a kind of exotic atoms

and the applicability of using it to probe the reaction mechanism and the active intermediates are briefly introduced.A synthesis reaction of catalyst Rh（I）from reducing Rh（III）by ethylene is chosen for testing this applicability.Based on the abnormal changes of positronium lifetime and intensity with the reaction time

the formation of intermediate Rh（II）and the reaction mechanism are discussed.

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