摘要
利用XRD、TEM和活性评价等手段,研究了具有不同孔结构和比表面的γ-Al_2O_3表面上Cr_2O_3的集聚状态和晶粒大小,及它们对临氢脱烷基催化活性和选择性的影响。结果表明,具有双孔结构、大比表面γ-Al_2O_3制备的Cr_2O_3/Al_2O_3催化剂,其活性和选择性均呈现最佳值。
Techniques of XRD, TEM, and catalytic activity evaluation have been employ- ed to investigate the state of aggregate and crystal size of Cr_2O_3 on the surface of V-Al_2O_3 with different pore structure and specific surface. Their effects on catalytic activity and selectivity of hydrodealkylation reaction are also studied. The results show that Cr_2O_3/Al_2O_3 catalysts made from γ-Al_2O_3 with bimodal pore structure and large specific surface have optimal values of activity and selectivity.
出处
《石油化工》
CAS
CSCD
北大核心
1991年第8期540-544,共5页
Petrochemical Technology
