The results indicate that Ti|SiZSM|5 zeolite synthesized by cheap materials has high crystallinity and weak L acidic property. 结果表明 :使用廉价原料在适宜的条件下可以合成出高结晶度的Ti SiZSM 5分子筛 ,产品为正交晶系 ;
Niobic acid and compounds containing niobium are applied in a wide range of catalysis fields for their unique acidic property and thermal stability. 摘要铌酸和含铌化合物独特酸性和热稳定性，广泛的应用催化领域中。
Its structure and surface acidic property are characterized by using XRD,IR,NH 3 TPD and EDX. The catalytic activity on m xylene isomerization is investigated. 用XRD、IR、NH3－TPD等表征了AlPO4－5分子筛的结构和表面酸性，并对其作为间二甲苯异构化催化剂的催化活性进行了考察
How is the system designed to preserve the ACID properties of a unit of work? 如何设计系统来保存工作单元的ACID属性?
The relationship of catalyst acidic properties to coke activity in catalytic cracking reactions is studied by IR,TG,and XRD. 采用IR、TG、XRD等技术研究催化裂化反应中催化剂的酸性质与积炭的关系。