燃料化学学报2008，Vol.36Issue(1)：42-47,6.
纳米氧化镍的制备及其对纤维素裂解催化活性的评价
Preparation of nano-NiO particles and evaluation of their catalytic activity in pyrolyzing cellulose
摘要
Abstract
Nano-NiO particles were prepared by using the homogeneous precipitation method, and characterized by using X-ray Diffraction (XRD), BET and transmission electronic microscope (TEM). The prepared nano-NiO particles were found to be spherical in shape, could be well dispersed, and demonstrated weak agglomeration. They generally had high purity and a fine crystal phase of cubic syngony with a mean size of ～ 7.5 nm and specific surface area of 187.98 m2/g. Meanwhile, evaluation of the catalytic activity of developed nano-NiO particles in pyrolyzing cellulose was carried out in comparison with that of micro-NiO, in the same conditions, using TGA. The results indicated that the activation energy in the presence of miero-NiO and nano-NiO reduced by 12.24 kJ/mol and 22.42 kJ/mol, respectively, in comparison with that of pure cellulose pyrolysis. This resulted in the initial temperatures of cellulose decomposition being 10 ℃ and 19 ℃ lower than that of pure cellulose, and the final char yield was further decreased. Compared to the micro-NiO, nano-NiO particles demonstrated an even superior activity.关键词
氧化镍/纳米颗粒/纤维素/热解Key words
nickel oxide/ nanoparticles/ cellulose/ pyrolysis分类
化学化工引用本文复制引用
李建芬,肖波,杜丽娟,晏蓉,LIANG Tee-David..纳米氧化镍的制备及其对纤维素裂解催化活性的评价[J].燃料化学学报,2008,36(1):42-47,6.基金项目
The Programme of Introducing Talents of Discipline to Universities in China （）
The Science Research Foundation of HubeiProvincial Department of Education, China(13200618006). （13200618006）
