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The influence of physical parameters on the in-situ metal carbonyl complex formation studied with the Fast On-line Reaction Apparatus (FORA)
Radiochimica Acta ( IF 1.4 ) Pub Date : 2021-04-01 , DOI: 10.1515/ract-2020-0035
Yves Wittwer 1, 2 , Robert Eichler 1 , Dominik Herrmann 1 , Andreas Türler 2
Affiliation  

The Fast On-line Reaction Apparatus (FORA) was used to investigate the influence of various reaction parameters onto the formation and transport of metal carbonyl complexes (MCCs) under single-atom chemistry conditions. FORA is based on a 252 Cf-source producing short-lived Mo, Tc, Ru and Rh isotopes. Those are recoiling from the spontaneous fission source into a reaction chamber flushed with a gas-mixture containing CO. Upon contact with CO, fission products form volatile MCCs which are further transported by the gas stream to the detection setup, consisting of a charcoal trap mounted in front of a HPGe γ -detector. Depending on the reaction conditions, MCCs are formed and transported with different efficiencies. Using this setup, the impact of varying physical parameters like gas flow, gas pressure, kinetic energy of fission products upon entering the reaction chamber and temperature of the reaction chamber on the formation and transport yields of MCCs was investigated. Using a setup similar to FORA called Miss Piggy, various gas mixtures of CO with a selection of noble gases, as well as N 2 and H 2 , were investigated with respect to their effect onto MCC formation and transport. Based on this measurements, optimized reaction conditions to maximize the synthesis and transport of MCCs are suggested. Explanations for the observed results supported by simulations are suggested as well.

中文翻译:

物理参数对快速在线反应装置(FORA)研究的原位羰基金属配合物形成的影响

快速在线反应装置(FORA)用于研究各种反应参数对单原子化学条件下羰基金属配合物(MCC)的形成和运输的影响。FORA基于252 Cf来源,可产生短寿命的Mo,Tc,Ru和Rh同位素。那些从自发裂变源回卷到用含CO的气体混合物冲洗的反应室中。与CO接触后,裂变产物形成挥发性MCC,这些MCC通过气流进一步输送到检测装置,该检测装置由安装了木炭阱的装置组成在HPGeγ探测器前面。根据反应条件,MCC的形成和传输效率不同。使用此设置,各种物理参数(例如气体流量,气体压力,研究了裂变产物进入反应室时的动能和反应室温度对MCCs的形成和传输产率的影响。使用类似于FORA的名为Piggy Miss的设置,研究了CO与各种稀有气体以及N 2和H 2的各种气体混合物对MCC形成和传输的影响。基于此测量结果,建议了优化的反应条件,以使MCC的合成和运输最大化。还建议对模拟所支持的观察结果进行解释。就它们对MCC形成和运输的影响进行了研究。基于此测量结果,建议了优化的反应条件,以使MCC的合成和运输最大化。还建议对模拟所支持的观察结果进行解释。就它们对MCC形成和运输的影响进行了研究。基于此测量结果,建议了优化的反应条件,以使MCC的合成和运输最大化。还建议对模拟所支持的观察结果进行解释。
更新日期:2021-04-02
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