Synthesis, characterization of nafionfunctionalized MCM-41 and its catalytic application in preparation of CL-20 via HNO3 electrolyte involved nitration of TAIW

Abstract EN

Hybrid organic–inorganic MCM-41 (Mobil Composition of Matter No.

41) silicas functionalized with Nafion (perfluoroalkylsulfonic acid analogous) were prepared and characterized by Fourier Transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and N2 adsorption analysis.

The Brønsted acidity was determined by UV spectrophotometer.

The prepared catalyst (SA / MCM-41) exhibited high catalytic activity in the nitration of TAIW (tetraacetylhexaazaisowurt zitan) aiming at synthesizing CL-20 (hexanitrohexaazaisowurtzitane), with the yield up to 93 % .

The leaching problem was not observed after several runs, demonstrating that the catalyst could be recycled and reused without losing activity.