Industrial & Engineering Chemistry Research, Vol.56, No.25, 7224-7228, 2017
Introduction of Anionic Surfactants to Copolymer Micelles: A Key to Improving Utilization Efficiency of P123 in Synthesis of Mesoporous Aluminosilicates
Mesoporous aluminosilicates (MAs) with high hydrothermal stability by assembly of zeolite Y precursors have been emerging as the most promising materials for cracking heavy oil molecules. A means to improve utilization efficiency of organic surfactants is of vital importance in synthesis of MAs. In this work, this goal was achieved by the introduction of ionic surfactant micelles in low concentration of copolymer. It is found that the strong interactions between the hydrophobic chain of sodium dodecyl sulfate (SDS) and poly(propylene oxide) (PPO) units of P123 lead to the formation of mixed micelles even at low concentration of P123. The self-aggregation of SDS molecules could induced the formation of mixed micelles with a core consisting of SDS micelles with PPO units and a corona of poly(ethylene oxide) (PEO) units. The mixed surfactants (SDS/P123) exhibited excellent performance for enhancing utilization efficiency of P123. This strategy developed a novel route for synthesis of MAs with high efficiency and low-cost.