Polysulfo-functionalized heteropolyacid ionic hybrid with multiple heteropolyacid negative ions as well as preparation method and application thereof

A heteropolyacid anion, polysulfonic acid functional technology, applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of easy deactivation, low catalytic activity, and complicated catalyst preparation process. , to achieve good amphipathic effect
CN106748908AActive Publication Date: 2017-05-31MINJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MINJIANG UNIV
Publication Date
2017-05-31

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Abstract

The invention discloses a polysulfo-functionalized heteropolyacid ionic hybrid with multiple heteropolyacid negative ions as well as a preparation method and an application thereof. Two ionic hybrids with novel structures are built by taking aliphatic polyamine, 1,4-butanesultone, phosphotungstic acid and silicotungstic acid as starting materials and carrying out two steps of atomic economic reaction through quaternization and acidification. Positive ions of the ionic hybrid comprise four or three bissulfo-functionalized long-chain quaternary ammonium positive ions; negative ions matched with the positive ions comprise three Keggin configuration silicotungstic acid negative ions or two Keggin configuration phosphotungstic acid negative ions; the prepared ionic hybrid can be used for preparing cyclohexyl carboxylate. The ionic hybrid has high acid strength and high acid content; the ionic hybrid also shows high amphipathy, so the reaction between substrate cyclohexene and organic carboxylic acid is facilitated; the ionic hybrid has the characteristics of atom economy, mild reaction condition, no backflow water diversion, high separation probability of products and high purity.
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Description

technical field

[0001] The invention belongs to the technical field of chemical products and their preparation, and in particular relates to polysulfonic acid functionalized polyheteropolyacid anion heteropolyacid ion hybrids and their preparation methods and applications. Background technique

[0002] Heteropolyacids not only have strong acidity and mild redox catalytic activity, but also have structural designability at the molecular level. They are one of the "green" catalysts with the most research value and development prospects after molecular sieves. The thermal stability, solubility, and acidity of heteropolyacids are closely related to their counterions, so the physical and chemical properties and catalytic activity of heteropolyacids can be adjusted by changing the counterions. Based on this idea, heteropolyacids with organic cations as counterions Multi-acid ion hybrids came into being. In 2001, Xi et al. reported the first quaternary ammonium heteropolyacid ion ...

Claims

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