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不同碱介质对合成硅基MCM-41的影响
引用本文:汤德平,汪尚兵,李湘祁,曾国坪,林辉.不同碱介质对合成硅基MCM-41的影响[J].硅酸盐通报,2004,23(6):48-51,83.
作者姓名:汤德平  汪尚兵  李湘祁  曾国坪  林辉
作者单位:福州大学材料科学与工程学院,福州,350002;福州大学材料科学与工程学院,福州,350002;福州大学材料科学与工程学院,福州,350002;福州大学材料科学与工程学院,福州,350002;福州大学材料科学与工程学院,福州,350002
基金项目:福建省教育厅资助项目(JB01002)
摘    要:研究了在较高的硅与表面活性剂摩尔比(10)体系中,采用不同的碱介质(氨水、乙二胺、三乙醇胺/NaOH)来合成MCM-41。通过XRD,N2吸附-脱附等表征手段,分析了不同碱介质体系对制备MCM-41的影响,并分别与NaOH介质中合成的MCM-41进行比较。结果显示,弱碱介质(NH3,EDA)有利于提高MCM-41的热稳定性;而采用混合碱介质(三乙醇胺/NaOH),则可在一定程度上改善MCM-41的水热稳定性,但随着三乙醇胺量的增加,材料的孔径会相应的减小。

关 键 词:MCM-41  碱介质  热稳定性  水热稳定性

Effect of Different Alkaline Media on the Synthesis of Sillicon - Base MCM - 41
Tang Deping Wang Shangbing Li Xiangqi Zeng Guoping Lin Hui.Effect of Different Alkaline Media on the Synthesis of Sillicon - Base MCM - 41[J].Bulletin of the Chinese Ceramic Society,2004,23(6):48-51,83.
Authors:Tang Deping Wang Shangbing Li Xiangqi Zeng Guoping Lin Hui
Abstract:MCM-41 in the system of relatively high molar ratio of Si/Surfactant(10) was synthesized under the different circumstance of alkaline media in the Papter. By XRD,N2 adsorption-desorption experiment,the effect of different alkaline media on the synthesis of MCM-41 was discussed and compared with MCM-41 obtained in NaOH,respectively. The results show that the as-synthesized MCM-41 obtained from weak alkaline systems has good thermal stability,and the mixed alkaline medium (NaOH/TriethanolAM) can improve the hydrothermal stability of MCM-41 in a way. However,the pore size of samples will decrease with an increase of the amount of triethanol amine.
Keywords:MCM-41 alkaline medium thermal stability hydrothermal stability
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