摘要
载体氧化铝的性能对B207型催化剂的比表面积、孔容、孔径分布、催化剂内表面的利用率及使用寿命等性能影响较大。研究了氧化铝的制备方法,确定了氧化铝的制备工艺。结果表明:采用0.8-1.0mol/L的碱性沉淀剂,在较低的沉淀温度及中性至弱酸性的条件下沉淀,且沉淀后减少老化时间,有利于提高载体氧化铝的中孔比例。采用自制的催化剂载体制备的B207型催化剂的中孔比例为54%~62%,同时具有良好的转化率、选择性及热稳定性。
The properties of supported alumina have great influence on the specific surface area, pore volume, pore size distribution, catalyst inner surface utilization and service life of B207 catalyst. The preparation method of alumina is studied and the preparation process of alumina is determined. The results show that using 0.8-1.0 mol/L alkaline precipitator to precipitate at lower precipitation temperature and neutral to weak acidic conditions, and reducing aging time after precipitation, the mesoporous proportion of alumina carrier can be improved. The mesoporous proportion of B207 catalyst prepared by self-made catalyst carrier is 54%-62%, and it has good conversion, selectivity and thermal stability.
作者
李兴田
李忠建
LI Xingtian;LI Zhongjian(SINOPEC Nanjing Research Institute of Chemical Industry Co.,Ltd.,Nanjing 210048,China)
出处
《能源化工》
2019年第3期32-36,共5页
Energy Chemical Industry
关键词
低变催化剂
氧化铝
比表面
孔径分布
中孔
low temperature shift catalyst
alumina
specific surface
pore size distribution
mesopore
