FT-RAMAN ONLINE ANALYSIS OF PCL3 REACTOR MATERIAL

Fourier transform (FT)-Raman spectroscopy has been applied to the on-l ine analysis and control of a PCl3 reactor. This particular analytical technique was selected from a consideration of the Raman scattering e fficiencies of the constituents of the reaction and the ability of the fiber-optic-coupled, near-IR, FT-Raman systems to remotely sample the toxic and potentially hazardous reaction mixture. In this communicati on we describe the Raman spectra of P4, PCl3, PCl5, and P4 dissolved i n PCl3, as well as related compounds, along with relative band intensi ties of the constituents of the reaction. Factors leading to the optim um FT-Raman configuration for this particular process control problem are discussed in detail.