Low magnetic field - assisted synthesis of MCM-41
The discovery that mixtures of network-forming inorganic species and surfactants selfassemble into mesostructured materials has considerably broadened synthesis strategies. Application of a magnetic field is one of potential methods to align and orient template molecules in view of specific pore structures and adsorption modification and may represent a new route for porous structure design. The present paper reports a micellar supramolecular templating approach for siliceous mesoporous MCM-41 in basic and acidic conditions under low steady magnetic field influence. The mesosilicates were prepared from aqueous mixtures containing TEOS and CTAB at 298 K under steady magnetic fields. All experimental results obtained both in basic and acid synthesis medium show the influence on the pore diameters and a0 structural parameter as a consequence of the influence of magnetic field action on selfassembly of surfactant molecules in surfactant/silicate hybrids. The MCM-41 synthesis time under low magnetic field action was appreciably decreased.
E. Popovici A. Vasile E. Dvininov Rodica Pode
Department of Physical and Theoretical Chemistry and Materials Chemistry, “Al. I. CuzaUniversity of Faculty of Industrial Chemistry and Environmental Engineering, University Politehnica of Timisoara
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）