摘要
采用溶剂热法,利用不同的硅源和铝源合成了富硅的SAPO-11分子筛.结果显示,与水热法合成的样品相比,溶剂热法合成的Pt/SAPO -11催化剂具有较大的外表面积,同时其硅含量、酸度和对正十二烷异构化的催化活性均显著提高.在所有合成的Pt/SAPO- 11催化剂样品中,以正硅酸乙酯与异丙醇铝为原料,采用溶剂热法合成的催化剂具有最高的酸度与正十二烷异构化活性.
Silicoaluminophosphate (SAPO) molecular sieves as acid catalysts have attracted considerable attention for their promising applications in petroleum refining processes such as aromatics alkylation and n-alkane hydroisomerization . The acidity and catalytic properties of SAPOs depend on the Si content and the manner of Si substitution . It is of significance to synthesize Si-rich SAPOs with high acidity for the further improvement of their catalytic activity.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2005年第4期268-270,共3页
基金
SupportedbytheAdvancedProjectofKnowledgeInnovationProgrammingofTheChineseAcademyofSciences(DICP K2003D4).
关键词
铂
SAPO-11
溶剂热合成
水热合成
正十二烷
异构化
platinum, SAPO-11, solvothermal synthesis, hydrothermal synthesis, n-dodecane, hydroisomerization
