Synergistically stabilized SAPO-37-tetragonal zirconia composites: a promising catalyst for ethyl levulinate synthesis.

A tetragonal zirconia-faujasitic SAPO-37 zeolite composite (SAP-37ZR) was synergistically stabilised at 550 °C using a temperature programmed reduction method. The presence of the zeolite-ZrO composite phase was confirmed through powder XRD reflection, SEM and TEM-ED pattern analyses. The developed SAP-37ZR composite, exhibiting moderate acidity, was found to be highly active for the production of ethyl levulinate (EL) from furfuryl alcohol with a 99% yield.

Temperature-programmed reduction method for stabilization of the inorganic framework of SAPO-37 materials: promising catalysts for MTBE production.

A temperature-programmed reduction method was developed to stabilize SAPO-37 and molybdenum-(oxy)-carbide-loaded SAPO-37 (SAP-37MoCR). The inorganic framework (Faujasite type SAPO-37) was retained for the first time even after treatment at 550 °C and was confirmed through powder XRD and SEM analysis. SAP-37MoCR exhibits strong acidic sites and is a promising catalyst for MTBE synthesis.

preparation of a nickel-oxy-hydroxide decorated ITQ-2 composite: a hydrodeoxygenation catalyst.

A layered zeolite precursor of MWW type (MCM-22) was successfully delaminated (ITQ-2) in the presence of nickel oxy-hydroxide. The broadening of XRD peaks corresponding to the (100), (220), and (310) planes and the disappearance of the (002) plane confirm the delamination. The curled ITQ-2 sheets having uniform lattice fringes, and the slit-shaped layers illustrate the formation of nickel-oxy-hydroxide-decorated ITQ-2 (Ni-ITQ-2 composite).