What absorbs at 3610 cm⁻¹ in an FTIR spectrum?

快速回答

A band near 3610 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.

可能的官能基指派

排名反映累積的文獻證據，而非單一權威規則。請務必根據您的樣品背景進行確認。

可能的材料

僅當同一文獻庫支援此波段以及至少一個額外特徵峰時，才會顯示材料。

光譜邏輯

This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 3610 cm⁻¹ is usually not enough for material identification by itself.

實際使用

此類查詢常見於聚合物鑑別、未知塑膠篩選、品管故障排除、再生材料驗證，以及基於文獻的峰值歸屬審查。

常見錯誤

• 將一個孤立的譜帶視為材料的證據，而未檢查至少一兩個支持峰。
• 忽略重疊：多個官能團可能在相同波數附近貢獻。
• 當添加劑、混合物、氧化或污染物可能扭曲譜圖時，跳過驗證。

驗證建議

當仍然存在歧義時，使用DSC、GC-MS或TGA驗證假設，特別是對於混合物、降解樣品和填充聚合物。

這些指派背後的文獻

• 信心 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) 信心 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) 信心 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) 信心 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) 信心 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 信心 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 信心 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) 信心 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