Reaction Monitoring by Process NMR

Presented here are several simple reactions monitored by 60 MHz process NMR performed in a 5 mm NMR tube. Reaction #1: Acetic Anhydride in Water – Reacts to form Acetic Acid NMR Monitored Reaction Profile Reaction #2: Acetic Anhydride + Excess of Methanol + Acid...

Examples of 60 MHz Process NMR Spectral Resolution

These are non-spinning spectra obtained on a Qualion process NMR spectrometer operating at 58 MHz. The spec on water at this shim level is 1.5/5/20 Hz at 50%/10%/0.5% peak height. The first spectrum is of 91% isopropyl alcohol in water – store bought pharmacy...

News: Process NMR Associates and TopNIR Sign Partnership Agreement

Topnir Systems is proud to announce the signature in October 2009 of a Partnership Agreement with Process NMR Associates, LLC. This partnership enables Process NMR to utilize our field proven software in complementary fields NMR and MIR combining forces to deliver...

PNA Presentations at 104th Gulf Coast Conference

Paul Giammatteo recently presented two papers at the Gulf Coast conference that was held in Galveston, Texas on January 20-21. His first paper was entitled “Counting Carbons for Tighter Control: Combining GC and NMR to Improve Distillate Manufacturing” and...

NMR Analysis of Commercial Pear Cider

For comparison with the home made ciders analyzed in the previous posting I am including the NMR of analysis of a commercial pear cider. The previous ciders were very dry while the pear cider was decidedly sweet. The carbohydrate content is a notable difference. The...

1H NMR Analysis of Hard Apple Cider

There have been quite a lot of NMR studies centered around apple cider (non-alcoholic) and apple cider vinegar. However a search of the literature turns up no reference for NMR analysis of hard apple cider. This effort was undertaken to analyse the alcohol content of...

Micro-ESR Spectrometry of Crude Oils

Process NMR Associates, LLC (Danbury CT) and Active Spectrum, Inc (San Carlos CA) are collaborating in the application of micro-ESR technology to petroleum applications. The initial work has focussed on crude oils but will soon be expanded to residues and cracker...

Solid-State 13C NMR Analysis of Carbonaceous Materials

Over the past 20 years we have obtained the solid-state NMR analysis of pretty much every carbonaceous material that exists – including coal/oil shales/bitumen, polymers/catalysts/fibers, cellulose/polysaccharides/foodstuffs/gels, deposits/dried...

60 MHz TD-NMR System

Process NMR Associates and Spin Resonance Ltd have recently completed the construction a small 60 MHz (1.4T) 5mm TD-NMR system that can be utilized to study T1 and T2 characteristics of novel contrast agents at typical MRI frequencies. Here are a few pictures of the...

Conjugated Diolefins Analysis by COSY NMR

Conjugated diolefins are responsible for fouling of many processes in a refinery. COSY NMR analysis can determine the concentration of these species in many processed petroleum product streams….see PNA webs site.