人工晶体学报2007，Vol.36Issue(5)：1045-1051,7.
氧化镍纳米晶体的制备及其过程分析
Preparation of Nanocrystalline NiO and Process Analysis
摘要
Abstract
The objective of this study is to develop a novel and effective nano-NiO catalyst to be used in biomass gasification for tar removal. For this purpose, in this study, nanocrystalline NiO particles were successfully prepared by the homogeneous precipitation method, and different approaches including thermogravimetric analysis, Fourier transforms infrared spectrometry, X-ray diffraction, BET surface area measurement and transmission electron microscopy were used to characterize the nano-NiO particles and its precursors. Meanwhile, the process of the nanocrystalline NiO particles derived from precursors was thoroughly analyzed. The analysis results indicated that the as-synthesized precursor was hydrated nickelbasic carbonates and its formula was identified as NiCO3 · 2Ni(OH)2 · nH2O, and it can completely transform into nanocrystalline NiO particles below 360℃ under the air atmosphere. Furthermore, the effect of calcination conditions on the crystalline size of nanocrystalline NiO are very crucial. The prepared NiO nanoparticles were found spherical in shape, could be well dispersed and demonstrated weak agglomeration. They had generally high purity and a fine crystal phase of cubic syngony with a mean size of about 7.5nm and specific surface area of 187.98 m2/g, the high specific surface areas of the NiO nanoparticles suggested its possibility of application as efficient catalytic materials.关键词
氧化镍/纳米颗粒/均匀沉淀法/表征Key words
nickel oxide/ nanoparticles/ homogeneous precipitation/ characterization分类
矿业与冶金引用本文复制引用
李建芬,肖波,杜丽娟,晏蓉,LIANG David-tee..氧化镍纳米晶体的制备及其过程分析[J].人工晶体学报,2007,36(5):1045-1051,7.基金项目
The Programme of Introducing Talents of Discipline to Universities in Chins("111" project B06019) （"111" project B06019）
The Science Research Foundation of Hubei Provincial Department of Education, China ( No. D200618006) （ No. D200618006）
