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 15 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
| Grupo funcional | Evidência |
|---|---|
| Hydroxyl (O-H) | 13 |
| Methacrylate | 11 |
| Acetate | 11 |
| Metal oxygen | 10 |
| Carbonyl (C=O) | 9 |
| Alkyl C-H | 8 |
| Carboxyl (COOH) | 7 |
| Silicon (Si) | 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
-
confiança 4,8
Al2O3
Structural, optical, morphological and thermal properties of TiO2–Al and TiO2–Al2O3 composite powders by ball milling DOI: 10.1016/j.physleta.2017.02.053 -
confiança 4,8
Al2O3
Effect of Al2O3 in poly(methyl methacrylate) composite polymer electrolytes DOI: 10.1063/1.5034559 -
confiança 4,8
Al2O3
Acosta 等 - 2022 - Alumina as an Antifungal Agent for Pinus elliottii DOI: 10.3390/jof8121299 -
confiança 4,8
Al2O3
Mebed 等 - 2022 - Controlling the Structural Properties and Optical DOI: 10.3390/catal12020142 -
confiança 4,8
Al2O3
Ucar 等 - 2017 - Determination of Aluminum Oxide Thickness on the A DOI: 10.1007/978-3-319-51541-0_36 -
confiança 3,6
Al2O3
Djebaili 等 - 2015 - XPS, FTIR, EDX, and XRD Analysis of Al2O3 Scales G DOI: 10.1155/2015/868109 -
confiança 3,6
Al2O3
Influences of Al2O3 and TiO2Content on Viscosity and Structure of CaO–8%MgO–Al2O3–SiO2–TiO2–5%FeO Blast Furnace Primary Slag DOI: 10.3390/met9070743 -
confiança 3,6
Al2O3
Piqueras 等 - 2008 - Pd-gamma Al2O3 applied to triglycerides hydrogenat DOI: 10.1016/j.apcata.2008.05.029 -
confiança 0,7
Al2O3
Kim 等 - 2013 - Viscous Behavior of Alumina Rich Calcium-Silicate DOI: 10.2355/isijinternational.53.170 -
confiança 0,7
Al2O3
Maslakah 等 - 2019 - Influence of ZrO2 Composition on ZrO2Al2O3 Cerami DOI: 10.1063/1.5115700
Upload your FTIR spectrum
Get AI-based polymer identification and peak-by-peak interpretation from your own spectrum.