摘要
采用TG、ESR、PASCA和压力-微反等技术研究工业装置上W-Ni催化剂表面积炭的性质和状态。研究结果表明,催化剂表面上的积炭存在着Sw—C、Sm—C和Ss—C三类烧焦中心、第一类和第二类积炭是催化剂失活的主要原因,第三类积炭对正庚烷加氢裂解反应有一定的促进作用;三类积炭与催化剂之间存在着不同程度的相互作用,Ss—C与催化剂形成了"金属-碳-载体"的强相互作用,导致催化剂表面上生成一种新的物种。
PASCA, ESR and Microreactor have been used to study the states and properties of the coke deposits on a commercially used W-Ni catalyst. The results indicate that the carbon exists in three type of states on catalyst surface. The first and second types of carbon are the main reason for catalyst deactivation. The third type has a promoting effect on n-C_7 hydro-cracking reaction ; it interacts strongly with the catalyst by merci-carbon-support interaction (MCSI), forming a new state on catalyst surface.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
1994年第3期19-24,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
