Abstract

The effect of the conditions for carrying out the reaction of liquid-phase hydrogenation of the nitro group on a bulk nickel catalyst in a binary water–alcohol solution has been studied. It is shown that each stage of the catalytic process leads to a change in the structure of the active nickel surface. The influence of hydrogen adsorption, adsorption of catalytic poison, and chemical effects on the catalyst surface, as well as the hydrodynamic conditions of the process on the catalyst particle size, structure, and surface morphology, was studied. It has been experimentally proven that the resulting adsorption–catalytic deformation leads to an increase in the rates of reduction of compounds containing a nitro group at low degrees of conversion.

中文翻译：

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吸附过程对镍结构和催化性能的影响

摘要

研究了在二元水-醇溶液中，在块状镍催化剂上进行硝基液相加氢反应的条件的影响。结果表明，催化过程的每个阶段都会导致活性镍表面的结构发生变化。研究了氢吸附，催化毒物的吸附以及化学作用对催化剂表面的影响，以及该工艺的流体动力学条件对催化剂粒径，结构和表面形态的影响。实验已经证明，由此产生的吸附-催化变形导致低转化率的含硝基化合物的还原速率增加。