title: Investigation of Y/SBA Composite Molecular Sieves Morphology Control and Catalytic Performance for n-Pentane Aromatization.
abstract: Using Y molecular sieve as the core, Y/SBA-15 composite molecular sieves were prepared by different crystallization methods in the paper. The growth process and morphologies of the composite molecular sieves were controlled by adjusting the synthesis factors. The structures and acidity of two kinds of composite molecular sieves were characterized by X-ray diffraction (XRD), N2 adsorption/desorption, transmission electron microscopy (TEM), and NH3-TPD. The catalysis performances of the composite molecular sieves were investigated in the aromatization reaction of n-pentane. The results indicated that the desired core-shell composite molecular sieves were obtained when the crystallization conditions were 36 hours, 100 °C and secondary crystallization. The aromatization results showed that core-shell composite molecular sieves had better selectivity for producing high application value xylenes compared to mixed-crystal composite molecular sieves.
authors.affiliation: College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Funshun Liaoning 113001, China.
authors.forename: Chun-Wei
authors.initials: CW
authors.lastname: Shi
authors.affiliation: School of Materials and Metallurgy, Northeastern University, Shenyang Liaoning 110819, China.
authors.forename: Wen-Yuan
authors.initials: WY
authors.lastname: Wu
authors.affiliation: Institute of Pharmaceutical Sciences of Shandong Province, Key Laboratory for Chemical Drug Research of Shangdong Province, Jinan Shandong 250101, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Li
authors.affiliation: School of Materials and Metallurgy, Northeastern University, Shenyang Liaoning 110819, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Bian
authors.affiliation: College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Funshun Liaoning 113001, China.
authors.forename: Shan-Lin
authors.initials: SL
authors.lastname: Zhao
authors.affiliation: Inha University, 100 Inharo, Nam-gu Incheon 402-751, Korea.
authors.forename: Ming-Yuan
authors.initials: MY
authors.lastname: Pei