Traditional offline methods to analyze reaction chemistry, such as High-Performance Liquid Chromatography (HPLC), Nuclear Magnetic Resonance (NMR) Spectroscopy, and Gas Chromatography (GC), share a common problem: when a sample is removed for analysis, it may be altered or compromised resulting in significant analytical errors. The solution for this is Continue reading
Paul Scholl will present a free online seminar – Recent Advances in Organic Chemistry in Academia Using Real-Time In Situ FTIR – on July 28. This on-going series reviews recent advances in organic chemistry by academia where real-time in situ mid-infrared (mid-IR) analytics played a role in the advancement of organic chemistry research.
During the Recent Advances in Organic Chemistry seminar, Paul will discuss several recent publications by academia illustrating how real-time in situ Fourier Transform Infrared spectroscopy (FTIR) was used to help advance the fundamental understanding of organic chemistry. During this series, the following research areas have been discussed:
This past week, I attended the National Graduate Research Polymer Conference (NGRPC), which was hosted by the University of North Carolina at Chapel Hill Department of Chemistry. A well known polymer chemist and professor from another large state university commented without any prompting from me that he really would like to change from using round bottom flasks to using the EasyMax™ for their polymer syntheses. I saw this as a good opportunity to learn from his perspective what he felt the inherent value was of the EasyMax™, an automated lab reactor system, in academia.
Dr. Jennifer Andrews of METTLER TOLEDO will present a free online seminar Improving the Understanding and Control of Polymer Synthesis Using Real-Time In Situ FTIR on July 27. During this presentation, Jennifer will discuss emerging polymer research and how to use real-time in situ Fourier Transform Infrared Spectroscopy (FTIR) to the understand polymerizations.
The importance of real-time in situ reaction monitoring for polymerizations is due in part to the fact that many polymerization reactions are run at high temperatures and/or pressures, some are extremely oxygen sensitive and many involve the use of hazardous reagents.
Wiley InterScience highlighted a paper that was just published in MacroMolecular Reaction Engineering by Professor Rolf Mülhaupt and his student Rainer Xalter of Albert-Ludwigs University in Freiburg, Germany.
This paper discusses the use of METTLER TOLEDO FBRM® and PVM® for real-time in-process monitoring of polymer and catalyst particles. During the polymerization of high-density polyethylene (HDPE), FBRM® and PVM® are used to determine polymer growth kinetics and to measure the effects of catalyst breakage and attrition within standard commercial-scale reactors.
“Unprecedented insight into the particle growth processes during ethylene slurry polymerizations catalyzed by supported single-site and Ziegler catalysts was gained by online monitoring using two different probes inserted directly into the reactor. FBRM online monitoring complemented by PVM online visualization of polymer particles allowed for the distinction of different types of particle growth processes depending on catalyst type and productivity.”
Citation: “On-line Monitoring of Polyolefin Particle Growth in Catalytic Olefin Slurry Polymerization by means of LasentecTM Focused Beam Reflectance Measurement (FBRM) and Video Microscopy (PVM) Probes”, R. Xalter and R. Mülhaupt, Macromol. React. Eng. 2010, 4, 25. http://doi.wiley.com/10.1002/mren.200900048?crel=US_AC_eAdv_Blog