Abstract

Using Fourier transform IR spectroscopy, the radiation–thermal decomposition of water in the nano-ZrO₂ + nano-SiO₂ + H₂O system in the temperature range of T = 373–673 K under the influence of γ-rays was studied. It is shown that water adsorption in zirconium and silicon nanooxides occurs by the molecular and dissociative mechanisms. Intermediate-active products of the radiation-heterogeneous decomposition of water—zirconium and silicon hydrides, hydroxyl groups—have been registered. The values of the velocities and radiation–chemical yields of molecular hydrogen during the radiolysis of water in the presence of nano-ZrO₂ + nano-SiO₂ mixtures were determined. It was revealed that the values of the velocities and radiation–chemical yields decrease on going from nano-ZrO₂ to nano-SiO₂. The stimulating role of radiation in the radiation–thermal decomposition of water in the temperature range of T = 373–673 K is shown.

中文翻译：

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纳米ZrO 2 +纳米SiO 2 + H 2 O体系中辐射-热水分解的傅里叶红外光谱研究

摘要

利用傅里叶变换红外光谱，研究了在γ射线影响下，T = 373–673 K温度范围内，纳米ZrO ₂ +纳米SiO ₂ + H ₂ O系统中水的辐射热分解。结果表明，锆和纳米氧化硅中的水吸附是通过分子和离解机理发生的。已经记录到水的辐射非均质分解的中间活性产物（锆和氢化硅，羟基）。纳米ZrO ₂ +纳米SiO ₂存在下水的水解过程中分子氢的速度和辐射化学产率的值确定混合物。结果表明，从纳米ZrO ₂到纳米SiO ₂，速度和辐射化学产率的值降低。显示了在T = 373–673 K温度范围内，辐射在水的辐射-热分解中的刺激作用。