摘要
稠环芳烃(PAHs)是一种化学稳定性高、难降解的有机污染物,加氢裂化可将PAHs转化为轻质芳烃和链烃,被认为是PAHs转化的有效方式之一。介绍了国内外加氢裂化工艺的概况、PAHs(萘、蒽、菲等)加氢裂化反应网络及其多相催化反应机理,分析了活性金属、酸中心、活性金属与酸中心的相互作用及助剂对加氢裂化催化剂性能的影响。提出优化金属中心和酸性中心之间的协同作用,制备出高活性、高选择性和稳定性的加氢裂化催化剂是PAHs加氢裂化催化剂的发展趋势。
Polycyclic aromatic hydrocarbons（PAHs） have been identified as a kind of hazardous organic pollutants with high chemical stability. Hydrocracking, being considered as one of the most effective ways for the removal of PAHs, can convert PAHs into lighter aromatic hydrocarbons and hydrocarbons. Recent progresses in the heterogeneous catalytic hydrocracking of PAHs, such as naphthalene, anthracene and phenanthrene, were introduced, which included relevant processes, reaction networks and reaction mechanism. The influences of promoters, active metals, acid sites, interaction between the active metals and the acid sites on the catalytic hydrocracking were discussed. It was proposed that the design and fabrication of highly active catalysts with excellent stability and selectivity were the main subjects in future research for the PAHs hydrocracking, especially adjusting and optimizing the synergistic effect between the metals and the acid sites.
出处
《石油化工》
CAS
CSCD
北大核心
2016年第10期1263-1271,共9页
Petrochemical Technology
基金
国家自然科学基金资助项目(21376004)
陕西省科技计划资助项目(11JK0593)
关键词
稠环芳烃
反应机理
加氢裂化催化剂
polycyclic aromatic hydrocarbons
reaction mechanisms
hydrocracking catalysts
