How can you identify Al2O3 from FTIR?
This page summarizes the recurring FTIR evidence reported for Al2O3, including the most frequent peaks, supporting functional groups, and literature-backed interpretation patterns. It is a structured evidence page, not a claim of automatic single-spectrum certainty.
Backed by 20 cited sources
Quick answer
Al2O3 is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.
Peak interpretation
Possible materials / groups
| Functional group | Evidence |
|---|---|
| Methacrylate | 13 |
| Acetate | 13 |
| Alkyl C-H | 10 |
| Hydroxyl (O-H) | 10 |
| Methoxy (OCH3) | 9 |
| Carbonyl (C=O) | 7 |
| Silicon (Si) | 7 |
| Carbohydrate | 7 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of Al2O3, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.
Real-world usage
This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.
Common mistakes
- Calling a material match too early because one famous peak is present.
- Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
- Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.
Verification advice
Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.
Literature behind this page
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confidence 4.8
Al2O3
Estimation of the intrinsic stresses in α-alumina in relation with its elaboration mode DOI: 10.1016/j.jssc.2010.03.012 -
confidence 4.8
Al2O3
Fourier transform infrared reflection absorption spectroscopy and microspectroscopy, a tool to investigate thermally grown oxide scales DOI: 10.1016/j.tsf.2007.06.126 -
confidence 4.8
Al2O3
Acosta 等 - 2022 - Alumina as an Antifungal Agent for Pinus elliottii DOI: 10.3390/jof8121299 -
confidence 4.8
Al2O3
Controlling the Structural Properties and Optical Bandgap of PbO–Al2O3 Nanocomposites for Enhanced Photodegradation of Methylene Blue DOI: 10.3390/catal12020142 -
confidence 4.8
Al2O3
Effect of Al2O3 in poly(methyl methacrylate) composite polymer electrolytes DOI: 10.1063/1.5034559 -
confidence 4.8
Al2O3
Determination of Aluminum Oxide Thickness on the Annealed Surface of 8000 Series Aluminum Foil by Fourier Transform Infrared Spectroscopy DOI: 10.1007/978-3-319-51541-0_36 -
confidence 3.6
Al2O3
Oxidation of CO on a Pt/Al2O3 catalyst: from the surface elementary steps to light-off tests IV. Kinetic study of the reduction by CO of strongly adsorbed oxygen species DOI: 10.1016/S0021-9517(03)00267-7 -
confidence 3.6
Al2O3
A Parametric Study on a Diesel Engine Fuelled Using Waste Cooking Oil Blended with Al2O3 Nanoparticle—Performance, Emission, and Combustion Characteristics DOI: 10.3390/su13137195 -
confidence 3.6
Al2O3
Study of the “Fast SCR”-like mechanism of H2-assisted SCR of NOx with ammonia over Ag/Al2O3 DOI: 10.1016/j.apcatb.2011.11.042 -
confidence 3.6
Al2O3
In situ FTIR and ex situ XPS/HS-LEIS study of supported Cu/Al2O3 and Cu/ZnO catalysts for CO2 hydrogenation DOI: 10.1016/S1872-2067(20)63672-5
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