Abstract
The synthesis of MCM-41 mesoporous compounds with Si/Al ratios as low as 2 without observing the presence of octahedral Al in27AlMAS NMR is reported. FTIR spectra of chemisorbed pyridine indicated that MCM-41 materials in their protonated form exhibit both Brønsted and Lewis acid sites.
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Borade, R.B., Clearfield, A. Synthesis of aluminum rich MCM-41. Catal Lett 31, 267–272 (1995). https://doi.org/10.1007/BF00808839
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DOI: https://doi.org/10.1007/BF00808839