摘要
通过成胶、陈化等工艺成功制备出一种具有拟薄水铝石结构的无序介孔硅铝材料（JSA），并采用XRD，BET，MPM，SEM，TEM，FT-IR，NH3-TPD等方法进行物化表征。结果表明：该材料具有较高的比表面积和孔体积，平均孔径达到8～12nm；由球形粒子堆积而成并呈现出均匀的褶皱状结构；同时含有L酸中心和B酸中心，总酸量大，水热结构稳定性及活性稳定性高；添加JSA的催化裂化催化剂具有更高的重油转化能力，焦炭选择性优异，产物分布更加优化。
A disordered mesoporous silica-alumina material （JSA） with pseudo-boehmite structures was successfully prepared through co-gel and aging process. It was studied in detail by XRD, BET, MPM, SEM, TEM, FT-IR and NH3-TPD. The results reveal that the material possesses large surface areas and pore volumes, and the average pore diameter is in the range of 8-12 nm. This material is formed by many spherical particles aggregated together and its micrograph looks like uniform wrinkles. It has both Lewis acid and Br{Snsted acid centers as well as relatively high total acid content. The material shows pretty high hydrothermal stabilities. The FCC catalysts prepared with JSA display much higher cracking activities in the conversion of heavy oil and excellent selectivity of coke, and the distribution of cracking products is improved.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2015年第9期47-51,共5页
Petroleum Processing and Petrochemicals
关键词
介孔材料
催化裂化
重油转化
mesoporous material
FCC
heavy oil conversion
