• 作者： 林弘萍 ; 鄭淑芬 ; 牟中原
• 作者服務機構： 台灣大學化學系
• 中文摘要： A new process to synthesize thermally stable mesoporous molecular sieves of MCM-41 structure based on delayed neutralization at ambient temperature was investigated. All samples synthesized by this new method have BET surface areas of about 1100m/sup 2//g and possess high thermal stability up to 900.degree.C. Higher crystallinity and less lattice constriction after calcination were observed for samples with a longer aging period. Those samples with aging time longer than 10 days exhibited four characteristic XRD peaks of MCM-41 both before and after calcination at 560.degree.C. The nitrogen adsorption-desorption isotherms of the calcined samples showed larger average pore size and more homogenous pore size distribution. The method was also successfully applied to the synthesis of MCM-41 with different surfactants of hydrocarbon length with 10-18 carbons and proves to be a simple route for obtaining thermally stable MCM-41 at room temperature.
• 英文摘要： --
• 中文關鍵字： Synthesis; Thermally Stable; Ambient Temperature; Molecular Sieve; Mesoporous Material; Delayed Neutralization
• 英文關鍵字： 合成；熱穩定；環境溫度；分子篩；間介多孔材料；延遲中和