Abstract

An apparatus has been created at the Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences (BIC SB RAS), to study the photochemical and thermal effects of infrared laser radiation on a two-phase gas–dust medium consisting of mixtures of light hydrocarbons and catalytically active nanoparticles. The apparatus includes reactors with gas flows from 10 to 1000 L/h and laser-radiation intensity from 10 to 10⁵ W/cm², CO₂ lasers, equipment for analyzing reaction products and other diagnostic equipment, as well as a section for laser synthesis of oxide nanopowders with a capacity of up to 1.5 g/h. One of the CO₂ lasers generates cw radiation with a power of up to 120 W, while the other is a pulsed–periodic laser with a maximum average power of 450 W. The developed laser-irradiated reactors make it possible to study laminar, vortex, and transient gas flows with chemical reactions. Thermocouples with molybdenum and copper electrodes were used to measure the gas temperature in the range of up to 1100°C in the laser radiation field of up to 10³ W/cm². The effect of laser radiation on a chemically active medium is studied jointly with computational experiments at the cluster of the BIC SB RAS and the Siberian Supercomputer Center (SSCC ICMMG SB RAS).

中文翻译：

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激光催化装置

摘要

俄罗斯科学院西伯利亚分校的波列斯科夫催化研究所（BIC SB RAS）已经创建了一种装置，用于研究红外激光辐射对由光的混合物组成的两相气-尘介质的光化学和热效应。碳氢化合物和具有催化活性的纳米粒子。该设备包括气体流量为10至1000 L / h，激光辐射强度为10至10 ⁵ W / cm ^2的反应器，CO ₂激光器，分析反应产物的设备和其他诊断设备，以及用于激光的部分合成能力高达1.5 g / h的氧化物纳米粉体。一种CO ₂激光产生的连续波辐射功率高达120 W，另一种是最大周期平均功率为450 W的脉冲周期激光。发达的激光辐照反应堆使研究层流，涡流和瞬态气流成为可能与化学反应。具有钼和铜电极的热电偶用于在高达10 ³ W / cm ²的激光辐射场中测量高达1100°C的气体温度。在BIC SB RAS和西伯利亚超级计算机中心（SSCC ICMMG SB RAS）的群集中，结合计算实验研究了激光辐射对化学活性介质的影响。