本研究是使用混合中性界面活性劑 (fatty alcohol polyethylene glycol ether)及陽離子型界面活性劑 (quaternary ammonium surfactant)的方法，調整出適當的疏水性有機模板來合成三維立體結構的MCM-48，並以便宜的矽酸鈉作為無機物的來源。藉由調整中性界面活性劑的莫耳比例、pH值、水量來探討MCM-48的合成條件和化學組成，以及使用不同碳鏈長的四級銨鹽和不同中性界面活性劑來合成MCM-48，並討論所形成的介尺度結構的一些物理性質(孔徑大小、孔壁厚度、單位晶格長度、表面積…等等)，經由以上的研究可提供一個選擇適當界面活性劑的合成方法。並研究中性界面活性劑在此混合界面活性劑的方法中所扮演的角色，是作為共界面活性劑(cosurfactant)還是模板(template)。所合成的MCM-48，具有高表面積(~1100 m2/g)及很大的孔體積(~1 cm3/g)，其粒徑大小分布約在100~300nm。經由此合成方法，我們在實驗室就能夠大量地製備MCM-48及其應用─製備中孔洞碳材。

　　使用工業級酚醛樹酯做為碳的前驅物，在經過灌入、低溫聚合、高溫碳化及移除氧化矽模板後，就可得到中孔洞碳材。這種合成方法能夠依模板的結構和外觀的不同來製備擁有不同結構和外觀的中孔洞碳材，所使用氧化矽中孔洞模板有MCM-48、SBA-15、長條狀SBA-15 (Tubular-SBA-15)、蟲洞型中孔氧化矽材料(wormhole-like mesoporous silica)，製備出來碳材的大小、形狀、結構都與原本的模板相似甚至是一樣。這些中孔洞碳材都具有相當高的比表面積 (＞1000 m2g-1)、高孔體積(＞500 cm3g-1, STP) ，以及良好的熱穩定性(~600 ℃分解)。用此合成方法能夠以低成本來大量地製備中孔洞碳材做為其它應用方面的研究(吸附劑、催化劑、觸媒的擔體、電雙層電容、儲氫材料…等等)。

　　Nano-sized MCM-48 silica of 3D mesostructure was prepared by using surfactant mixtures of cationic and neutral surfactants (quaternary ammonium salt and fatty alcohol polyethylene glycol ether) as template, and cheap sodium silicate as silica source. By adjusting the neutral surfactant molar ratio, and the pH value of the solution, the phase diagrams in different water content were charted, which can help ones to find the optimum synthetic condition for mass-production of MCM-48. In addition, we employed different carbon chain length of CnTMAX and different values of n and m neutral surfactant in neutral surfactant Cn(EO)m to synthesize MCM-48, the products have different physicochemical properties (pore size, wall thickness, unit cell parameter, surface area and so on). Moreover, we found the role of neutral surfactant in this synthesis method acts as a cosurfactant. The synthesized MCM-48 has high specific surface area (~1100 m2/g) and pore volume(~1 cm3/g), its particle size distribution is around 100 nm to 300 nm. Via this convenient synthesis method, we can easily produce a large amount of nano-sized MCM-48 in laboratory for its application-as a solid template of mesoporous carbon.

　　Various mesoporous carbons have been synthesized using different mesoporous silica templates. The synthesis procedure involves infiltration of the pores of the template with phenol-formaldehyde resin, carbonization, and subsequent template removal. Because the morphology and mesostructure of mesoporous carbon depends on the silica template; thus, the desired mesostructures and morphologies can be obtained by using different mesostructured silicas as solid templates. These mesoporous carbons have high specific surface area(＞1000 m2g-1), narrow mesopore size distribution, large pore volumes (＞500 cm3g-1, nitrogen under STP), and good thermal stability(up to 600 ℃ decomposition).By this synthesis method, we can commercialize mesoporous carbons in low cost for other potential applications (adsorbents, catalysts, catalyst supports, electrochemical double-layer capacitors, hydrogen storage materials and so on).

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