Abstract

New methane degradation nickel catalysts based on original and modified layered double hydroxides and multilayer carbon nanotubes have been synthesized. The synthesized systems have been characterized by a set of physicochemical methods, namely, X-ray diffraction (XRD) analysis, scanning electron microscopy, Raman spectroscopy, and the thermal method. The catalytic activity of the synthesized catalysts in the temperature range of 550–850°С has been studied. It has been shown that in the methane decomposition reaction, the sample with a modified Ni-containing layer exhibits two regions of catalytic activity (550–650 and 700–850°С), whereas the sample based on carbon nanotubes is characterized by a single region (700–850°С) and the system based on a layered double hydroxide does not show activity in the entire temperature range.

中文翻译：

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基于结构化载体的甲烷分解镍催化剂

摘要

已经合成了基于原始和改性的层状双氢氧化物和多层碳纳米管的新型甲烷降解镍催化剂。已通过一系列物理化学方法（即X射线衍射（XRD）分析，扫描电子显微镜，拉曼光谱和热方法）对合成的系统进行了表征。研究了合成催化剂在550–850°С温度范围内的催化活性。研究表明，在甲烷分解反应中，具有修饰的含镍层的样品表现出两个催化活性区域（550–650和700–850°С），而基于碳纳米管的样品具有一个单一的特征。区域（700–850°С），基于层状双氢氧化物的系统在整个温度范围内均未显示活性。