摘要
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 （ EG_Nio ） 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 ad- sorption. The catalytic activity of the composites was compared with the material obtained by the conventional H2 treatment of EG_Nio using hydrocracking of 2,2,3-trimethylpentane as a model reaction.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2011年第5期335-340,共6页
New Carbon Materials
关键词
膨胀石墨
镍/炭复合物
微结构
催化活性
Expanded graphite
Ni/C composites
Microstructure
Catalytic activity
