Molecular sieve coatings on spherical substrates via pulsed laser deposition

Polymer Coating over Solid Particles with In Situ Thermal Curing

“…Coating performance is determined by a range of factors, including the rheology of the coating materials, substrate surface properties, curing reaction kinetics (if introduced), and coating technique. − For solid particles, common coating methods include dip coating, pulse laser deposition (PLD), , and spray coating with fluidized beds. ,,, Chemical cross-linking or curing is often induced during or after the coating process for enhanced coating-layer properties. Although curing can be triggered by multiple means, − heat-induced or thermal curing remains the most widely used.…”

Preparation of Silicalite Membranes on Stainless Steel Grid Supports

“…However, the high price and lack of flexibility of these systems have prompted research on alternative materials that can be used as membrane supports. Thus, among other attempts, it is worth mentioning the use of steel and ceramic monoliths (which may also be shaped as wheels or rotors), stainless steel grids, wire gauze packings, glass fibers, , nonporous ceramic and metal plates, glass, and steel beads …”

“…Thus, among other attempts, it is worth mentioning the use of steel 2 and ceramic 3 monoliths (which may also be shaped as wheels or rotors 4 ), stainless steel grids, 5 wire gauze packings, 6 glass fibers, 7,8 nonporous ceramic 9 and metal 10 plates, glass, and steel beads. 11 Monoliths are attractive as supports because of the same characteristics that made them good candidates for catalytic applications (flexibility of operation, good tolerance to the presence of dust, low pressure drop, reasonable cost, and relatively easy scale-up 12 ). In addition, zeolite-coated cordierite monoliths can be prepared by liquid-phase hydrothermal synthesis, 3,13,14 without recourse to a binder, meaning that a greater load of active material can be achieved.…”

Core−Shell Polystyrene/Zeolite A Microbeads

“…5,6 For the preparation of continuous zeolite coatings on small three-dimensional inorganic objects, a more sophisticated approach like seeding by pulsed laser deposition was applied. 7 The incompatibility between the organic substrates and the aluminosilicate precursor species is a serious obstacle for the preparation of zeolite layers on such supports and to the best of our knowledge zeolite films built of well-intergrown crystals have not been synthesized on organic polymer supports. The layer-by-layer (LbL) selfassembly technique, 8 which allows fabrication of multilayer assemblies onto charged substrates by spontaneous sequential adsorption of oppositely charged species, was used for the preparation of continuous zeolite layers on polystyrene supports.…”

“…These syntheses, generally performed via a classical hydrothermal treatment, have shown that the formation of the zeolite coating is very sensitive to the chemical nature, the morphology, and the position of the substrate in the reactor as well as the reaction conditions. Very often, however, even substrates compatible with the zeolite precursor system require a pretreatment of the support or application of seeds to grow a continuous film. , For the preparation of continuous zeolite coatings on small three-dimensional inorganic objects, a more sophisticated approach like seeding by pulsed laser deposition was applied . The incompatibility between the organic substrates and the aluminosilicate precursor species is a serious obstacle for the preparation of zeolite layers on such supports and to the best of our knowledge zeolite films built of well-intergrown crystals have not been synthesized on organic polymer supports.…”