Decomposition Reactions of Fe(CO)5, Fe(C5H5)2, and TTIP as Precursors for the Spray-Flame Synthesis of Nanoparticles in Partial Spray Evaporation at Low Temperatures,Industrial & Engineering Chemistry Research

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Decomposition Reactions of Fe(CO)5, Fe(C5H5)2, and TTIP as Precursors for the Spray-Flame Synthesis of Nanoparticles in Partial Spray Evaporation at Low Temperatures
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-04-15 , DOI: 10.1021/acs.iecr.9b06667
Munko Gonchikzhapov _{1,

2} , Tina Kasper _{1,

2}

Affiliation

Flame spray pyrolysis is an important method of nanoparticle manufacturing. Reactions of the precursor and the solvent determine which intermediates can contribute to particle formation. To investigate the chemical interaction between the solvent and the precursor during the partial evaporation of the spray preceding ignition, precursor solutions were sprayed into an externally heated flow reactor. The thermal decomposition of the precursors Fe(CO)₅, Fe(C₅H₅)₂, and Ti(i-OC₃H₇)₄ in solutions of xylene and ethanol was investigated. Decomposition products were analyzed by mass spectrometry. The relevance of reactions at these low temperatures for the spray-flame process is substantiated by measurements of the spatial temperature distribution of the spray flame. Depending on the relative thermal stabilities of the precursor and the solvent, the less stable component can initiate decomposition of the more stable component, resulting in different reaction patterns of the solutions. The results are discussed with regard to their potential influence on particle formation pathways.

中文翻译：

Fe（CO）₅，Fe（C ₅ H ₅）₂和TTIP的分解反应，作为低温下部分喷雾蒸发过程中纳米粒子喷雾-火焰合成的前驱体

火焰喷雾热解是纳米颗粒制造的重要方法。前体与溶剂的反应决定了哪些中间体可以促进颗粒的形成。为了研究在点火前喷雾部分蒸发过程中溶剂与前体之间的化学相互作用，将前体溶液喷雾到外部加热的流动反应器中。前驱体Fe（CO）₅，Fe（C ₅ H ₅）₂和Ti（i- OC ₃ H ₇）₄的热分解研究了在二甲苯和乙醇溶液中的溶液。通过质谱分析分解产物。通过测量喷雾火焰的空间温度分布，可以证实在这些低温下对于喷雾火焰过程的反应相关性。取决于前体和溶剂的相对热稳定性，不太稳定的组分可以引发更稳定的组分的分解，从而导致溶液的不同反应模式。讨论了它们对颗粒形成途径的潜在影响。

更新日期：2020-04-15

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