Solid-state NMR analyses cover a wide range of applications that cannot be addressed by liquid-state experiments. In solid-state NMR samples are place in 7mm diameter spinning rotors and spun at high speeds (3-14 kHz) in order to allow acquisition of NMR spectra with sufficient resolution to allow chemical determinations to be made.
An excellent overview of solid-state NMR is presented by Prof. Robert Schurko.
In the following pages we will give several examples of applications that have been undertaken by PNA. We have a large amount of experience in the solid-state NMR area. Some of the topics below cannot be exemplified due to restrictions placed on the analyses. Where this is the case I have included a link to a document that adequately demonstrates the use of NMR in that area.
Silicon-29 NMR of
i) Gasket Materials (Various Silicones)
ii) Heterogeneous Catalysts (clays, zeolites, aluminosilicates, various molecular sieves).
Carbon-13 NMR of
1) Combustion Chamber Deposits
2) Coals, Coke, Soils, Kerogens, Asphaltenes
3) Carbon Based Catalysts
4) Diesel Engine Soot
5) Gaskets and Seal Materials (Silicones, NBR, HNBR)
6) Polymers (EPDM, Terpolymers, Rubbers, Nylons, Polyethers, Polyurethanes, PVC,)
7) Sugars, Polysaccharides, and Polypeptides
8) Catalyst Coking Studies
9) Medicine Tablet Dosing Studies
10) Insoluble Materials from Various Sources (Compositional Studies)
11) Natural Organic Matter (Soil, Humus, Kerogen)
12) Polymorphism - Crystal Form Determination - Amorphous Content
Heteronuclear NMR Studies (31P, 27Al, 7Li, 19F, 23Na, 11B, 1H, 2H)
A) 31P NMR Of Diesel Soot
B) 2H NMR of Wax Crystallization Dynamics in Lubricant Base Oils
C) 27Al Studies of Aluminas, Surface-Modified Aluminas, Aluminosilicates and Clays
D) 11B, 27Al, and 29Si Studies of Boron Substituted Zeolites and Aluminosilicates
E) Solid State NMR of Silicates and Oxides - A Review by Stebbins
F) Zeolite Synthesis
Chemical Shift Tables
i) Carbon-13
ii) Nitrogen-15
iii) Silicon-29
iv) Aluminium-27
v) Phosphorus-31
vi) Fluorine-19
NMR Periodic Table (University of Illinois)
For more information on this topic please contact:
John Edwards
Manager, Process and Analytical NMR Services
Process NMR Associates LLC,
87A Sand Pit Rd
Danbury, CT 06810, USA
Tel: (203) 744-5905
