A new layered zinc phosphate (Mu-39) has been synthesized by hydrothermal treatment with biomolecules as original templates. It was synthesized with the L-histidine amino acid (C 6 H 9 N 3 O 2 ). The structure was determined by a single crystal X-ray diffraction study combined with exhaustive solid-state NMR experiments. These last ones [ 1 H f 13 C HETCOR, 1 H single quantum/double quantum (DQ), 31 P, 1 H f 31 P CPMAS, 1 H f 31 P HETCOR] ascertained the formulation of Mu-39 as {[C 6 H 10 N 3 O 2 þ ][Zn 2 (HPO 4 )(PO 4 ) -] 3 H 2 O} n with a hydrogen phosphate and phosphate ligands, and ruled out partial protonation such as (H 1-x PO 4 )(H x PO 4 ). A 31 P magic angle spinning (MAS) NMR study supported the almost complete racemization of L-histidine during the hydrothermal synthesis with only a small enantiomeric excess of 25% remaining. The compound crystallizes in the triclinic symmetry (space group P1) with a = 8.6109(6) Å , b = 9.0319(6) Å , c = 9.9523(7) Å , and R = 84.481(2)°, β = 83.279(2)°, γ = 74.652(2)°, V = 739.56(9) Å 3 , Z = 2. The inorganic layer is built up from four-membered rings sharing T-O-T bonds (T = Zn and P) and connected to each other in order to form ladders which are joined together via a Zn-O-P bond for creating eight-membered rings. The interest and the originality of this new zinc phosphate come especially from its unusual stability in aqueous solution.

A new layered gallophosphate, Ga 4 P 4 O 16 (C 2 H 5 NO 2 ) 4 , known as Mu-32 has been synthesised hydrothermally using the amino acid glycine (H 2 NCH 2 CO 2 H) as an original template. Such a template has never been used before for the synthesis of microporous and phosphate-based materials such as gallophosphates. The structure was determined by a single-crystal X-ray diffraction study and further characterised by scanning electron microscopy, elemental and thermal analyses and by 13 C and 31 P solid-state NMR spectroscopy. The compound crystallises in the monoclinic space

No abstract

Faujasite nanoparticles with average size of 10-40 nm were obtained without any organic structure directing agents (Green synthesis), then used as precursors for the synthesis of NaY/ SBA-15 composites. Two types of composites were obtained with meso/micro porosity (C1 and C2).The inorganic salt, NH 4 F, has a crucial effect on their morphologies, therefore, their textural and catalytic properties have been mostly influenced. The resulting materials were characterized by X-ray Diffraction (XRD), N 2 sorption, Scanning Electron Microscopy (SEM) .The both composites have been successfully used as catalysts for the N-formylation reaction of aniline. As a result, N-phenylformamide was obtained with up to 90 % yield and 100 % selectivity at 50°C in 4 h (solvent-free conditions) .The catalytic tests were monitored by gas chromatography (GC) and the nature of the products was confirmed by NMR.