NIR FT-Raman spectroscopy on molecular sieves

摘要

The potential of NIR FT-Raman spectroscopy for the investigation of zeolites (vanadylcontainingrnMFI, TS-1) as well as alumophosphate-based molecular sieves (AEI, CHA, CLO)rnare described. In Raman spectra of template containing samples bands of the organic speciesrndominate. By dispersive Raman microscopy a spatial distribution in a CoAPO-34 crystal isrnobserved. The Raman spectra allow a very rapid and sensitive detection of anatase formedrnduring thermal treatment of as-synthesised titanium-containing zeolites. Different vanadiumrnspecies are detected in vanadium-containing ZSM-5.