How NIR Spectrometer Monitors The Hydrolysis of MeOAc?
In the manufacturing process of Polyvinyl Alcohol (PVA), there are a large amount of methyl acetate (MeOAc) are produced. Since MeOAc itself doesn’t have industrial value, typically, the chemical fiber factory hydrolyzes the MeOAc into hydrolysis acetic acid and methanol.
Near infrared (NIR) spectroscopy can be used to monitor the mixtures of water, methyl acetate, and methanol (the remaining is acetic acid) in the hydrolysis process.
The method of near-infrared spectrometer is inserting an optical fiber probe into the mixture, and scanning the wavelength range between 1100 nm to 2500 nm. By observing the absorption spectrum of a specific wavelength, one can monitor the composition of these substances in the mixture.
The specific absorption wavelength of water, methyl acetate, and methanol are:
Water, at 1920 nm
Methyl acetate, at 1674 nm
Methanol, at 2086 nm
ACTTR Technology present ARCoptix NIR spectrometer products in Taiwan. In addition to the general NIR spectrometer for laboratories, we also provide the ruggedized OEM NIR spectrometer, which is designed for the machines in the factory. It provide both precise and durable conditions in the field. Please contact to ACTTR Technology for further product information.