Synthesis of highly ordered boron-containing B-MCM-41 and pure silica MCM-41

This study deals with the hydrothermal synthesis of highly ordered MCM-41 and B-MCM-41. Four techniques for the generation of MCM-41 were compared: thermal treatment in polypropylene vessels, in static autoclaves, in a stirred autoclave in ovens, and in microwave reactors heated with microwave radiation. The formation process of MCM-41 and the condensation of the framework were monitored by X-ray diffraction. The high periodicity of the materials was detected with X-ray powder diffraction and transmission electron microscopy. Highly ordered samples showing reflections up to sixth order in the selected area electron diffraction were produced.