Related Experiment Video
Updated: Jun 24, 2026

Synthesis of Zeolites Using the ADOR (Assembly-Disassembly-Organization-Reassembly) Route
Published on: April 3, 2016
(17)O DOR and other solid-state NMR studies concerning the basic properties of zeolites LSX
Denis Schneider1, Helge Toufar, Ago Samoson
1Bruker BioSpin GmbH, Silberstreifen, 76287 Rheinstetten, Germany.
Abstract:
We demonstrate complementary (1)H, (17)O, (27)Al and (29)Si measurements for basic low-silica-X zeolites, which were unloaded and pyrrole and formic acid-loaded. It was found that the acid-base-system is not stabile, if the loading exceeds one pyrrole molecule or two formic acid molecules per supercage.(17)O DOR NMR spectra exhibit at least four lines, which are broadened by a distribution of chemical shifts in a similar extend as the (29)Si MAS NMR spectra are broadened by distribution of Si-O-Al angles. A strong cation influence upon (17)O shifts was observed. But there was no strong influence of the acid molecules on the mean value of the (17)O shift of the spectra.
Related Concept Videos
Ionic Crystal Structures
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Molecular and Ionic Solids
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Imperfections in Crystal Structure: Stoichiometric Point Defects
Lattice Energies of Ionic Crystals
Weak Acid Solutions
Trends in Lattice Energy: Ion Size and Charge

