Synthesis and Characterizations of MCM-41 Silica with Thick Pore Wall
Nano-structured mesoporous silica with highly ordered 2D hexagonal topology has been synthesized using novel surfactant cetyltrimethylammonium tosylate (CTATos) as template via directly hydrothermal treatment at high temperature of 175 °C and varied crystallization time. The maximum pore wall thickness is up to 2.2 nm calculated by BdB method from desorption branch. The enlargement of pore wall thickness and unit-lattice of currently synthesized MCM-41 silica is attributed to the migration and subsequent deposition of the silicate species in the inner pore channel.
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Q. W. Hou et al., "Synthesis and Characterizations of MCM-41 Silica with Thick Pore Wall", Advanced Materials Research, Vols. 233-235, pp. 2034-2037, 2011