首页>
外国专利>
Method for heteroatom lattice substitution in large and extra-large pore borosilicate zeolites
Method for heteroatom lattice substitution in large and extra-large pore borosilicate zeolites
展开▼
机译:大孔和超大孔硼硅酸盐沸石中杂原子晶格取代的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention provides a method for preparing a zeolite having lattice substituted heteroatoms. The method includes: (a) contacting a calcined borosilicate zeolite with an acid, thereby producing an at least partially deboronated zeolite; and (b) contacting the at least partially deboronated zeolite with a salt-containing aqueous solution comprising one or more salts selected from the group consisting of aluminium salt, gallium salt, and iron salt, thereby producing a silicate or borosilicate zeolite having a lattice comprising aluminium atoms; gallium atoms, iron atoms or a combination thereof. Step (b) is conducted at a pH of about 3.5 or less. Preferably, step (a), step (b) or both are conducted at a temperature of from about ambient temperature to about 300°C, preferably, under stirring/tumbling.
展开▼