低碳化学与化工2024，Vol.49Issue(6)：17-23,7.DOI:10.12434/j.issn.2097-2547.20230368
两种工业甲醇合成催化剂失活原因对比分析
Comparative analysis of deactivation causes of two industrial methanol synthesis catalysts
摘要
Abstract
The deactivation of methanol synthesis catalysts is one of the important factors leading to the shutdown of methanol synthesis units,which seriously affects the economic benefits of production enterprises.Characterization analysis was conducted on catalyst samples from two methanol factories to investigate the reasons for their deactivation,including X-ray fluorescence spectroscopy,X-ray diffraction,infrared spectroscopy,physical adsorption and inductively coupled plasma emission spectroscopy.The results show that after about two years of industrial use,the catalysts exhibite phenomena such as decreased radial strength,pulverization,increased copper grain size,decreased specific surface area and enrichment of harmful impurity elements(sulfur and iron).The maximum grain size of copper in the deactivated catalyst can reach 32.72 nm,and the corresponding specific surface area decreases from 102.3 m2/g to the lowest 16.0 m2/g.The sulfur and iron contents(mass fraction)increase from less than 0.05%and 362×10-6 to the highest 0.36%and 2629×10-6,respectively.The catalysts collected from two factories exhibit different deactivation characteristics,and targeted measures need to be taken to extend the service life of the catalysts.关键词
甲醇/催化剂/失活/铜晶粒Key words
methanol/catalysts/deactivation/copper grain分类
化学化工引用本文复制引用
武燕娟,张凡,雍晓静,徐晓颖,邢爱华..两种工业甲醇合成催化剂失活原因对比分析[J].低碳化学与化工,2024,49(6):17-23,7.基金项目
国家能源集团项目(ST930023003N). （ST930023003N）
