MCM-48 price

copolymer Pluronic P123 triblock Assembly mesostructured silica using (EO (20), -PO (70) EO (20)) and n-butanol mixture is a simple way for the synthesis of MCM-48 as a great ordered mesoporous silicas with the cubic mesostructure Iad. The field of cubic phase considerably expanded to control accordingly by the amounts of butanol and the silica source. Extended phase range allows the synthesis of mesoporous silicas with different structural characteristics. Characterization by powder X-ray diffraction, nitrogen physisorption, the scanning electron microscopy and transmission electron microscopy shows that the cubic Iad has material 4 and 12 in the large specific surface area, high pore volume and the diameter of pores in the easily adjustable narrow size distribution, nm. In addition, the generation of additional pores between the two channels in the chiral structure Iad Gyroid systematically controlled depending on synthesis conditions. carbon replicas, sucrose is used as carbon precursor, are obtained either with the same structure or Iad I4 (1) / A (or low-symmetry), depending on the controlled synthesis conditions of the silica. Thus, the discovery of this extended field-phase leads to the easy synthesis of silica Iad cube with precise control of structure, great prospects for future applications of large pores provides silicas pore network in three dimensions.