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Synthesis of Highly Thermally and Hydrothermally Stable MCM-48 in Buffer Solution

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ã€Authorã€‘ KONG, Ling-Dong a LIU, Su b YAN, Xue-Wu a HE, He-Yong a LI, Quan-Zhi* ,a (a Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433) (b Department of Environmental Science and Engineering, Fudan University, Shanghai 200433)

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ã€Abstractã€‘ Mesoporous MCM-48 with high thermal and hydrothermal stability has been successfully syn- thesized in buffer solution by mixed cationic-nonionic surfactant templating pathway. The synthesized mate- rial was characterized by XRD, N2 adsorption-desorption isotherms, 29Si and 31P MAS NMR. The character- istic results showed that the MCM-48 material possessed high specific surface areas and well-ordered chan- nel systems. The MCM-48 sample treated with 100% steam at 600 â„ƒ for 8ï½ž10 h or calcined in air at 900 â„ƒ for 15 h could still retain its cubic structure, indicating that the sample has high thermal and hydrother- mal stability.æ›´å¤š è¿˜åŽŸ