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在低表面活性剂浓度及低表面活性剂与氧化硅比的条件下，研究了十六烷基三甲基溴化铵一硅酸钠体系中晶化温度对中孔分子筛M41S材料结构转变的影响．结果表明，晶化温度提高至135℃改变了原六方晶相MCM－41的结构，晶化温度提高至150℃后，中孔结构由六万MCM－41晶格转变为热不稳定的层状相，使得M41S材料的热稳定性降低，进一步提高晶化温度至165℃，中孔M41S材料则转变成微孔沸石ZSM－5．
The effect of crystallization temperature on the structure transition of mesoporous molecular sieve M41S was studied under low surfactant concentration and low surfactant to silica ratio . The results show that when the crystallization temperature is increased to 135 ℃, the structure of the original hexagonal phase MCM-41 is changed. When the crystallization temperature is increased to 150 ℃, the mesoporous structure is transformed from 60,000 MCM-41 lattice into a thermally unstable layered Phase, making the thermal stability of M41S material decreased, and further increase the crystallization temperature to 165 ℃, mesoporous M41S material is transformed into zeolite ZSM-5.