Philippe Boullay

Template-free nanosized faujasite-type zeolites

Nanosized faujasite (FAU) crystals have great potential as catalysts or adsorbents to more efficiently process present and forthcoming synthetic and renewable feedstocks in oil refining, petrochemistry and fine chemistry. Here, we report the rational design of template-free nanosized FAU zeolites with exceptional properties, including extremely small crystallites (10-15 nm) with a narrow particle size distribution, high crystalline yields (above 80%), micropore volumes (0.30 cm(3) g(-1)) comparable to their conventional counterparts (micrometre-sized crystals), Si/Al ratios adjustable between 1.1 and 2.1 (zeolites X or Y) and excellent thermal stability leading to superior catalytic performance in the dealkylation of a bulky molecule, 1,3,5-triisopropylbenzene, probing sites mostly located on the external surface of the nanosized crystals. Another important feature is their excellent colloidal stability, which facilitates a uniform dispersion on supports for applications in catalysis, sorption and thin-to-thick coatings.

Remarkable thermal stability of Eu(4-phosphonobenzoate): structure investigations and luminescence properties

A new 3D rare-earth hybrid material Eu(p-O(3)PC(6)H(4)COO) has been synthesised by a hydrothermal route from Eu(NO(3))(3) x 5 H(2)O and the rigid precursor, 4-phosphonobenzoic acid. The structure of Eu(p-O(3)PC(6)H(4)COO) has been solved by X-ray diffraction on a powder sample and is described as an inorganic network in which both carboxylic and phosphonic acid groups are linked to Eu ions forming a three-dimensional architecture. Thermal analysis performed on this compound has underlined its remarkable stability up to 510 degrees C and an optical study has been conducted to examine its luminescence properties that have been related to the structure of the material. The structural and luminescence properties have also been compared with the related material Eu phenylphosphonate.

Structure determination of a brownmillerite Ca 2 Co 2 O 5 thin film by precession electron diffraction

Calcium cobaltite thin films with a nominal ratio

Hydrogen positions in single nanocrystals revealed by electron diffraction.

\text{Ca}/\text{Co}=1

Phase selection enabled formation of abrupt axial heterojunctions in branched oxide nanowires.

were grown on (101)-

Precession electron diffraction tomography for solving complex modulated structures: the case of Bi5Nb3O15.

{\text{NdGaO}}_{3}

Tunable Magnetic Interaction at the Atomic Scale in Oxide Heterostructures

substrate by the pulsed laser deposition technique. The structure of the as-deposited metastable phase is solved using a precession electron diffraction three-dimensional data set recorded from a cross-sectional sample. We found that an ordered oxygen-deficient

The Mosaic Structure of Zeolite Crystals

{\text{Ca}}_{2}{\text{Co}}_{2}{\text{O}}_{5}

One-pot synthesis of silanol-free nanosized MFI zeolite

perovskite of the brownmillerite type with lattice parameters

Mapping electronic reconstruction at the metal-insulator interface in LaVO3/SrVO3 heterostructures

a\ensuremath{\approx}{a}_{p}\sqrt{2}\ensuremath{\approx}5.46\text{ }\text{\AA{}}