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2008•Journal of Yanshan UniversityRequires access

Synthesis and characterization of Ti-MCM-41 molecular sieves in the presence of ethylenediamin

Weihai Wang

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Abstract

Ti-MCM-41 mesoporous molecular sieves were synthesized in the presence of ethylenediamin using TBOT as titanium source and TEOS as silica source.The molecular sieves were characterized by the means of TEM,XRD and TG-DTA.The highly ordered Ti-MCM-41 molecular sieve could be obtained in the wide range of EDA/SiO_2=0.5～9.0.When EDA/SiO_2=1.0,the cry- stallinity of the molecular sieves is the highest.The TG curves show that with the EDA/SiO_2 molar ratio increasing,the mass weight loss of molecular sieves increases.

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Ti-MCM-41 mesoporous molecular sieves were synthesized in the presence of ethylenediamin using TBOT as titanium source and TEOS as silica source.The molecular sieves were characterized by the means of TEM,XRD and TG-DTA.The highly ordered Ti-MCM-41 molecular sieve could be obtained in the wide range of EDA/SiO_2=0.5～9.0.When EDA/SiO_2=1.0,the cry- stallinity of the molecular sieves is the highest.The TG curves show that with the EDA/SiO_2 molar ratio increasing,the mass weight loss of molecular sieves increases.

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Available abstract

Ti-MCM-41 mesoporous molecular sieves were synthesized in the presence of ethylenediamin using TBOT as titanium source and TEOS as silica source.The molecular sieves were characterized by the means of TEM,XRD and TG-DTA.The highly ordered Ti-MCM-41 molecular sieve could be obtained in the wide range of EDA/SiO_2=0.5～9.0.When EDA/SiO_2=1.0,the cry- stallinity of the molecular sieves is the highest.The TG curves show that with the EDA/SiO_2 molar ratio increasing,the mass weight loss of molecular sieves increases.

Key concepts: Molecular sieve, Mesoporous material, MCM-41, Materials science, Titanium, Chemical engineering, Molar ratio, Sieve (category theory)

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