Techniques

Gloveboxes & Schlenk Lines

For air and moisture sensitive reactions, we have two double gloveboxes, and 6 fume hoods equipped with Schlenk lines. Using these, we are able to synthesize and study a variety of organometallic catalyst systems. Notably, we have been exploring alkane dehydrogenation reactions using iridium pincer ligand complexes, as well as iridium-rhenium heterobimetallic complexes. Additionally, a single hood has been equipped with an in-house gas pressurization system for reactions using gaseous reagents at elevated pressures.

 

 

 

 

 

 


HPLC

We have an Agilent 1260 Infinity HPLC (left), used for ease of solvent selection and automation in our analysis. In our HPLC system, there are four solvent inlets available for isocratic or gradient analysis, for which we most often use water, 5mM sulfuric acid, and acetonitrile. We utilize a dual detector system and multiple columns to analyze many organic molecules specifically for the analysis of simple sugars, alcohols, oligosaccharides, organic acids and other biomass based products quantitatively.

Parr

Our Parr reactor (right) allows for the analysis of reactions under high pressure, high temperature, and a wide pH range, as well as the ability to rotate the apparatus 90 degrees to improve contact between the catalyst and reactants in heterogeneous catalyst systems. An auto-sampler has been equipped for easy of taking up to 10 samples during a single reaction period, making kinetic studies convenient.

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Stopped-flow UV/Vis

Our stopped-flow spectrophotometer is used for monitoring the kinetics of very fast reactions. Our stopped-flow is capable of monitoring reactions at temperatures as low as -25°C through single wavelength absorbance and florescence scans, with a photomultiplier detector, or full spectrum (300-800nm) scans, with a CCD detector.   Using our stopped flow we are capable of monitoring reactions that take place slower than 10 milliseconds.