Gemini dication based acid ionic liquid and preparation method thereof

A technology of acidic ionic liquids and dications, applied in organic chemistry and other fields, to achieve the effects of high thermal stability, high acid strength, and good thermal stability

Inactive Publication Date: 2011-05-04
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Theoretically speaking, the types of ionic liquids can be as high as hundreds of millions, but so far, only a few hundred kinds of room temperature ionic liquids have been reported.

Method used

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  • Gemini dication based acid ionic liquid and preparation method thereof
  • Gemini dication based acid ionic liquid and preparation method thereof
  • Gemini dication based acid ionic liquid and preparation method thereof

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Abstract

The invention discloses Gemini dication based acid ionic liquid and a preparation method thereof. The structure of a cation part of the ionic liquid is represented by a formula I, a formula II, a formula III or a formula IV, wherein in the formula I, the formula II, the formula III or the formula IV, m represents 3 or 4, and n represents an integral number of 1-15; and the structure of an anion part is selected from one of CH3(C6H4)SO<3->, C6H4COO<->, CF3SO<3->, CH3SO<3->, CH3COO<->, CF3COO<->, HSO<4->, BF<4->, PF<6->, H2PO<4->, NO<3-> and Cl<->. The preparation method comprises the following steps of: making Gemini bi-heterocyclic alkane react with alkyl sulfoacid inner ester to generate a sulfoacid inner salt; and then making the sulfoacid inner salt react with acid to obtain the ionic liquid. The ionic liquid can be used as a substitute of a traditional liquid acid catalyst and has industrial application prospect.

Description

technical field The invention relates to an acidic ionic liquid based on twinned cations and a preparation method thereof. Background technique Ionic Liquids (ILs) are molten salt systems that are completely composed of cations and anions and are liquid at or near room temperature. So far, although there is no strict distinction between room temperature ionic liquids and molten salts, salts with a melting point lower than 100 °C are generally called room temperature ionic liquids, and salts with a melting point higher than 100 °C are called molten salts. The properties of ionic liquids, such as non-volatility, wide liquid range, strong electrostatic field, good electrical conductivity, wide electrochemical window, and designability, make them a hot research topic. With the continuous development of research and application of room temperature ionic liquids, the types of ionic liquids are increasing rapidly. Theoretically speaking, there can be hundreds of millions of ionic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/60C07D295/088
Inventor 夏春谷李臻陈静刘晓飞
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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