Nascent zeolite frameworks grown from amorphous gels – identification and prospects for crystal engineering
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Douglas L. Dorset
Abstract
From the standpoint of designing microporous frameworks with desired pore diameter and dimensionality, and, especially, the optimization of crystal habit, the crystal engineering of new zeolites must be based on concepts/procedures different from those appropriate for the design of organic crystals. This is because the structure building units proposed by Barrer and co-workers are probably not instrumental for framework construction, thus eliminating the important ‘synthon’ approach used for the construction of innovative organic solids. With some variant of the Flanigen model for crystal growth via one SiO2 unit at a time, the best approach to zeolite crytal growth engineering appears to occur indirectly via structure directing agents that can also be modified to influence the emergent crystal habit. Prospects for identifying frameworks emerging from synthesis gels are also discussed in this review, revealing that the use of radial distribution functions is less informative than for the analysis of silicate glasses.
© by Oldenbourg Wissenschaftsverlag, Milford, New Jersey, Germany
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- Low amplitude, low frequency elastic measurements using Dynamic Mechanical Analyzer (DMA) spectroscopy
- Nascent zeolite frameworks grown from amorphous gels – identification and prospects for crystal engineering
- Crystallographic point groups in five dimensions
- New polyhedra – Part 1
- New polyhedra – Part 2
- Temperature-dependent structural transformations of hydrothermally synthesized cubic Li2TiO3 studied by in-situ neutron diffraction
- Synthesis, crystal structure, electrical and thermal transport properties of the skutterudite-derivative RhGe1.5–xSe1.5+x
- Structural study of mefloquinium salts with three isomeric n-nitrobenzoates (n = 2, 3, and 4)
- Structure, twinning, and ferroelasticity of bis(tetramethylammonium) hexafluorotitanate(IV), (TMA)2[TiF6]
- Ab-initio study of Al1–xGaxSb compound
- Optical in-situ spectroscopy of high-temperature properties of olivines
- Synthesis, structure and properties of Nd2BC containing the trans-dibora–(1,3)-butadiene [C=B–B=C]8–-unit
Articles in the same Issue
- Low amplitude, low frequency elastic measurements using Dynamic Mechanical Analyzer (DMA) spectroscopy
- Nascent zeolite frameworks grown from amorphous gels – identification and prospects for crystal engineering
- Crystallographic point groups in five dimensions
- New polyhedra – Part 1
- New polyhedra – Part 2
- Temperature-dependent structural transformations of hydrothermally synthesized cubic Li2TiO3 studied by in-situ neutron diffraction
- Synthesis, crystal structure, electrical and thermal transport properties of the skutterudite-derivative RhGe1.5–xSe1.5+x
- Structural study of mefloquinium salts with three isomeric n-nitrobenzoates (n = 2, 3, and 4)
- Structure, twinning, and ferroelasticity of bis(tetramethylammonium) hexafluorotitanate(IV), (TMA)2[TiF6]
- Ab-initio study of Al1–xGaxSb compound
- Optical in-situ spectroscopy of high-temperature properties of olivines
- Synthesis, structure and properties of Nd2BC containing the trans-dibora–(1,3)-butadiene [C=B–B=C]8–-unit
