Catalysis Letters, Vol.146, No.4, 800-810, 2016
Synthesis and Catalytic Application of Mesoporous Titanium Silicoaluminophosphate-37 (MESO-TSAPO-37) Molecular Sieves Assembled from Microporous TSAPO-37 Precursor
Titanium containing mesoporous silicoaluminophosphate (MESO-TSAPO-37) molecular sieves were assembled from microporous titanium silicoaluminophosphate-37 (TSAPO-37) precursor possessing structural building units of SAPO-37. FT-IR studies and N-2 sorption analysis supported the presence of microporosity on the walls of the mesoporous surface. The composite MESO-TSAPO-37 material showed promising catalytic activity in oxidation of cyclohexene. The catalyst showed complete conversion (100 %) of olefin with selective formation of allylic products (80 %). The catalytic activity persisted for several runs. Titanium substituted MESO-TSAPO-37 materials was assembled in presence of surfactant from microporous precursors of TSAPO-37 by a two step procedure. Thoroughly characterized MESO-TSAPO-37 was used for allylic oxidation of cyclohexene which resulted in 100 % conversion and 80 % selectivity towards allylic product.