1 / 8

Understanding Infrared and Raman Spectroscopy in Chemical Engineering

Learn about molecular vibrations, wave frequency, spectrometer types, sample preparation, peak identification, and Fourier transform in IR and Raman spectroscopy.

hu-tucker
Télécharger la présentation

Understanding Infrared and Raman Spectroscopy in Chemical Engineering

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Infrared Spectroscopy Terry A. Ring Chemical Engineering University of Utah

  2. Molecular Vibrations • Mass on a spring • Vibration Frequency • ν=c/λ • Wave number =1/ λ

  3. Spectrometer • Single Beam • Dual Beam • with Reference • Gas, Liquid & Solid • Sample Cells • Powder mixed with KCl to make pellet • Reflection off surface of Sample • Attenuated Total Reflection Sample Sample

  4. Spectrum • Peak Identification

  5. Spectrum • Peak Identification • Valence Vibrations • Bending Vibrations

  6. Peak Identification

  7. Fourier Transform IR • Mixing light from • Fixed mirror • Moving mirror

  8. Raman Spectroscopy • Laser Light Illumination • Scattered Light Spectra Observed

More Related