Advances in Mesoporous Molecular Sieve MCM-41

Abstract

The discovery of mesoporous molecular sieves, MCM-41, which possesses a regular hexagonal array of uniform pore openings, aroused a worldwide resurgence in this field. This is not only because it has brought about a series of novel mesoporous materials with various compositions which may find applications in catalysis, adsorption, and guest-host chemistry, but also it has opened a new avenue for creating zeotype materials. This paper presents a comprehensive overview of recent advances in the field of MCM-41. Beginning with the chemistry of surfactant/ silicate solutions, progresses made in design and synthesis, characterization, and physicochemical property evaluation of MCM-41 are enumerated. Proposed formation mechanisms are presented, discussed, and identified. Potential applications are reviewed and projected. More than 100 references are cited. 2079

Mesoporous silica reinforced polybutadiene rubber hybrid composite

“…These materials have perfectly long-range order, highly tunable pore size and good surface characteristics which make them an ideal material for various applications [5][6][7]. The polymer or reactive groups in the nano-sized pores extending along the channels to the openings will not only enhance the miscibility through the entanglement and inter-diffusion between the matrix and the particulate, but also highly suppress the aggregation of fillers.…”

Template-Based Synthesis of Nanoporous Hydroxyapatite

“…Surfactant-templated mesoporous materials have some specific features such as high surface areas and high adsorption capacities including the uniformity and periodicity of tunable mesopores [9][10][11], which are widely applicable to adsorbents and catalytic supports [12][13][14][15][16][17][18].…”

Pillared Clays as Superior Catalysts for Selective Catalytic Reduction of Nitric Oxide

“…It has been studied as catalysts, support and sorbents. [13][14][15][16] In our previous study, platinum doped MCM-41 catalyst showed higher specific activity than Pt/Al 2 O 3 for the SCR reaction. 9 The present study concentrations as that used in the activity measurements, i.e., 1000 ppm NO (when used), 1000 ppm C 3 H 6 (when used), 2% O 2 (when used) and balance of He.…”