Multi-step Dealumination and Incorporation of Titanium into the Framework of Natural Mordenite toward a Titanosilicate Catalyst

作者：Xiao Liping; Yang Jing; Zhou Hui; Chen Chunyu; Sun Shiye; Lou Hui; Zheng Xiaoming^*

来源：Chinese Journal of Catalysis, 2012, 33(1): 199-204.

DOI：10.3724/SP.J.1088.2012.10827

• natural mordenite
• multi-step dealumination
• titanation
• titanosilicate
• styrene
• partial oxidation

Titanosilicates with low cost have been prepared via multi-step incorporation of titanium into natural mordenite (MOR) using natural MOR as the precursor. The resultant Ti-MOR was characterized by X-ray diffraction, inductive coupled plasma-atomic emission spectroscopy, diffused reflectance ultraviolet-visible spectroscopy, N-2 adsorption-desorption, and temperature-programmed desorption of ammonia. The results showed that the framework of natural MOR remained during the treatment and the molar ratio of Si to Ti was low to 79. Furthermore, the well-dispersed 4-coordinated Ti was confirmed by UV-Vis spectra and the titanosilicate displayed appreciable activity in the selective oxidation of styrene using dilute H2O2(30%) as oxidant.

• 出版日期2012-1
• 单位浙江大学