MCM-41 consists of a regular arrangement of cylindrical mesopores that form a one-dimensional pore system. BET results reveal its uniform pore diameter, sharp pore distribution, large surface area and large pore volume. MCM-41 show potential on catalytic cracking, residue hydrocracking, lube oil hydrofinishing, alkylation, olefin polymerisation, seperation of CO2 and CH4, and other acid catalysis related fileds. In addition, MCM-41 performs well on heterogeneous catalysis, ion exchange, sensing technology, adsorption and separating etc.