CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Investigation on the trioctylphosphine oxide-based super-concentrated HCl system
Guo, R; Guo, L; Huang, K; He, AQ; Zhang, J; Zheng, LR; Liu, Y; Kang, TG; Gao, XX; Weng, SF; Zhao, Y; Yang, ZL; Xu, YZ; Noda, I; Wu, JG
2015
Source PublicationSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume136Pages:288—294
Subtype期刊文献
AbstractWe report a new super-concentrated HCl system prepared by using trioctylphosphine oxide (TOPO)-based reverse micelles. The observed molar ratio between acid and water (n(HCl)/n(H2O)) in the super-concentrated HCl are much higher than that in the saturated aqueous HCl solution (0.28). Moreover, FT-IR spectroscopic results reveal that a significant amount of HCI remains in the molecular form rather than being ionized into H+ and Cl-. As a result, two H-Cl stretching bands can be observed in the FT-IR spectrum, The super-concentrated HCI provides a unique chemical environment in which many chemical substances occur in unusual states. For example, the color of super-concentrated HCl solution containing copper ion was found to be reddish brown rather than green as in conventional state. UV-Vis-NIR spectral results indicate that both d-d transition band of Cu2+ and charge transfer band of Cl-Cu in super-concentrated HCl underwent significant variation. Additionally, copper ions bring about remarkable variation on the hydrogen bond network among HCI in the super-concentrated HCI solution as demonstrated by FT-IR spectra. According to the EXAFS results, we suggest that copper ion may occur as HCuCl3 in the super-concentrated HCl. (C) 2014 Elsevier B.V. All rights reserved.
KeywordSolid Acid Catalysts Hydrochloric-acid Lewis-acids Oxidation Phase
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24487
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Guo, R,Guo, L,Huang, K,et al. Investigation on the trioctylphosphine oxide-based super-concentrated HCl system[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2015,136:288—294.
APA Guo, R.,Guo, L.,Huang, K.,He, AQ.,Zhang, J.,...&Wu, JG.(2015).Investigation on the trioctylphosphine oxide-based super-concentrated HCl system.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,136,288—294.
MLA Guo, R,et al."Investigation on the trioctylphosphine oxide-based super-concentrated HCl system".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 136(2015):288—294.
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