Abstract

The catalytic properties of ultrafine nickel powder with a specific surface area of 11.7 m²/g and an average crystallite size of 34 nm, which was obtained by combining dc electrolysis and high-voltage discharge, were determined. The resulting nickel powder was used as a nanoheterogeneous catalyst in the hydrogenation of anthracene and phenanthrene. The degrees of conversion obtained with the use of the ultrafine nickel powder were compared with the values obtained using a commercial iron–chromium catalyst STK-1 (83.0% Fe₂O₃, 7.5% Cr₂O₃, and 2.0% CuO) under the same conditions. It was found that the highest conversion of anthracene in the process of hydrogenation for 60 min at a temperature of 450°C and a hydrogen pressure of 3 MPa was 86.24% in the presence of the nickel powder obtained or 91.35% with the use of STK-1. In the hydrogenation of phenanthrene for 60 min at a temperature of 400°C and a pressure of 5 MPa, the conversion was 32.28 or 25.9% with the use of the nickel powder or STK-1, respectively.

中文翻译：

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超细镍粉对蒽和菲加氢的催化性能

摘要

测定了直流电解和高压放电相结合得到的比表面积为11.7 m ^{2 /g、平均微晶尺寸为34 nm的超细镍粉的催化性能。}所得镍粉用作蒽和菲加氢的纳米多相催化剂。将使用超细镍粉获得的转化率与使用商业铁铬催化剂 STK-1（83.0% Fe ₂ O ₃，7.5% Cr ₂ O _{3 ）获得的值进行比较}, 和 2.0% CuO) 在相同条件下。发现在450℃温度和3MPa氢气压力下加氢60min过程中蒽的最高转化率在所得镍粉存在下为86.24%，使用STK为91.35% -1。在 400°C 温度和 5 MPa 压力下，菲氢化 60 分钟，使用镍粉或 STK-1 的转化率分别为 32.28 或 25.9%。