What absorbs at 3610 cm⁻¹ in an FTIR spectrum?
Una banda cerca de 3610 cm⁻¹ puede apuntar a varios grupos funcionales. A continuación se muestran las asignaciones más probables, clasificadas por cuánta evidencia publicada respalda cada una — cada una trazable a literatura (DOI) y validada de forma cruzada con nuestros más de 130,000 espectros de referencia y grafo de conocimiento.
Backed by 8 cited sources
Posibles asignaciones de grupos funcionales
| Grupo funcional | Hechos de respaldo | Fuentes citadas | Confianza máxima |
|---|---|---|---|
| Hydroxyl (O-H) | 10 | 8 | 1,0 |
| Silicon (Si) | 5 | 5 | 1,0 |
| Silanol (Si-OH) | 5 | 3 | 1,0 |
| Carboxyl (COOH) | 2 | 2 | 1,0 |
| Alkyl C-H | 1 | 1 | 1,0 |
| Bronsted acid site | 1 | 1 | 1,0 |
| Bromine | 1 | 1 | 1,0 |
| Nitrogen heterocycle | 1 | 0 | 1,0 |
La clasificación refleja la evidencia acumulada de la literatura, no una única regla autorizada. Siempre confirme según el contexto de su muestra.
Literatura detrás de estas asignaciones
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confianza 1,0
“2(cid:2) at = This result is inconsistent with the work by HZSM5 cm-1, of the band at 3610 which was due to partial exchange of Aboul-Gheit et al.”
IR study of iridium bonded to perturbed silanol groups of Pt-HZSM5 for n-pentane isomerization DOI: 10.1016/j.apcata.2011.12.039 -
Silicon (Si) confianza 1,0
“53 cm-1 Four bands were observed in the spectra of the three zeolites between 3500 to 3800 25 54 55 cm-1, cm-1 the band at 3610 is assigned to Si-OH-Al groups, which are associated with 26 56 57”
Zhao 等 - 2019 - Comparison of Direct, Selective Oxidation of Metha DOI: 10.1021/acs.jpcc.9b04388 -
Hydroxyl (O-H) confianza 1,0
“cm-1) (≈3610 In addition, Ca-OH stretching vibrations from crystalline jaffeite and cm-1) (≈3540 α-C α-C 2SH can be observed in the spectra of S0.”
Phase Composition of Silica Fume—Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA DOI: 10.3390/ma14112786 -
Silicon (Si) confianza 1,0
“32 112 SiO-H respectively.21-25 groups and isolated external groups, HB0.6 63 83 136 cm(cid:3)1 HB2.0 163 185 242 The band at 3610 is commonly assigned to the bridging (Si-(OH)-Al), hydroxyl groups which cause strong Brønsted”
Engineering the porosity and acidity of H-Beta zeolite by dealumination for the production of 2-ethylanthraquinone via 2-(4′-ethylbenzoyl)benzoic acid dehydration DOI: 10.1039/c7ra13576a -
Silicon (Si) confianza 1,0
“The component at 3610 cm-1 is due to Si(OH)Al groups and exhibit Brønsted acidity.”
Hydrogenating activity of Pt/zeolite catalysts focusing acid support and metal dispersion influence DOI: 10.1016/j.apcata.2015.03.027 -
Bromine confianza 1,0
“All samples The observed decrease in intensity for the band at 3610 which is characteristic of Brønsted acid sites, agrees well with the values for the exchange degree calculated on the were preliminary evacuated at 400 °C.”
Mihaylov 等 - 2022 - Purification of Hydrogen from CO with CuZSM-5 Ads DOI: 10.3390/molecules27010096 -
Alkyl C-H confianza 1,0
“It was found that the OH stretch cm-1 cm-1, cm-1 cmshifted to 3610 the C-H stretchat 2960 shifted to 2800 at 3600 1,”
Sharma 和 Sharma - 2019 - DOI: 10.4152/pea.201901001 -
Silicon (Si) confianza 1,0
“As shown in Figure 4c, the large peak at 3610 is associated with the framework Si(OH)Al structure, which is ascribed to Brønsted acid groups.”
Relationship between Acidity and Activity on Propane Conversion over Metal-Modified HZSM-5 Catalysts DOI: 10.3390/catal11101138
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