NiO粒子修饰的压缩膨胀石墨(EGNio)浸以煤焦油沥青,经550℃裂解,继而800℃水蒸气活化,制得Ni/C复合物块体.应用TEM考察了复合物中含Ni纳米粒的微结构排列方式.以N2吸附测定分析了复合物的比表面积和孔隙度.以2,2,3-三甲基戊烷脱氢裂解模型反应评估了复合物的催化活性并与EGNiO常规H2处理获得的参照物的活性做了比较.
Monolithic nickel/carbon(Ni/C)composites were prepared from coal tar pitch-impregnated compressed expanded graphite pre-decorated with NiO particles(EGNiO)by pyrolysis at 550 ℃ and subsequent steam activation at 800 ℃.The microstructural arrangement of the Ni-comprising nanoparticles in the composites was investigated using transmission electron microscopy.The specific surface area and porosity of the composites were analyzed by nitrogen adsorption.The catalytic activity of the composites was compared with the material obtained by the conventional H2 treatment of EGNiO using hydrocracking of 2,2,3-trimethylpentane as a model reaction.
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