Presentation Profile
Quantitative Moisture Analysis Below 100ppm in Liquid Process Streams
Currently Scheduled: 10/12/2021 - 9:30 AM - 10:00 AM
Room: Salon H - Hotel
Main Author
Adam Hopkins - Metrohm USA
- Elena Hagemann - Metrohm USA
Abstract:
Moisture control is critical to many chemical processes, and for many base chemicals, very low levels of moisture (<100ppm) must be maintained to avoid adverse side reactions. Due to both sample handling challenges, and equipment maintenance requirements reliable measurements in the lab at these levels are difficult to achieve. Online near-infrared spectroscopy overcomes both obstacles, but most commercial precalibrated analyzers are not able to operate at these low levels. In this session, we will demonstrate how Metrohm is able to achieve this low level of quantitative accuracy and the requirements to maintain this sensitivity using case studies of methanol and propylene oxide (PO). We will discuss this in the context of different ways to deploy the analyzer, with particular focus on maintaining calibration. Metrohm’s novel automated calibration approach allows quantification to approximately 30ppm and detection below 10ppm in real-time measurements. This level of sensitivity allows higher quality alkoxylations, reduces dehydration operations, and increases safety.
