Semi-automatic integrated reaction device and preparation method of imidazole amino acid ionic liquid

Abstract

The invention discloses a semi-automatic integrated reaction device and a preparation method of imidazole amino acid ionic liquid, the reaction device comprises a chromatographic column, the bottom of the chromatographic column is provided with a resin pretreatment channel and an ion exchange channel which are respectively communicated with a beaker; the purification and impurity removal unit consists of a peristaltic pump, a signal converter, a controller, an acid-base reaction container, a magnetic stirrer, an impurity removal liquid dropper, a rotary evaporator and a vacuum drying box; wherein the pretreatment electric control valve, the ion exchange electric control valve, the pretreatment pH monitor, the ion exchange pH monitor and the peristaltic pump are connected through a signal converter controller for automatic control. The imidazole amino acid ionic liquid is obtained by sequentially carrying out anion exchange resin pretreatment, imidazole halide salt anion exchange, acid-base neutralization reaction and purification and impurity removal on imidazole halide salt, anion exchange resin, inorganic strong base and amino acid through the reaction device. The reaction device is simple in structure, the operation process is greatly simplified and the operation time is shortened through electric control reaction, the reaction efficiency is improved, and the synthesis cost is reduced.

Description

technical field [0001] The invention relates to the field of ionic liquid preparation, in particular to a semi-automatic integrated reaction device of imidazolium amino acid ionic liquid and a preparation method. Background technique [0002] In recent years, the global warming caused by the greenhouse effect will have an irreversible impact on the entire ecosystem, such as droughts and floods in the tropics and temperate zones, melting glaciers, rising sea levels, scarcity of freshwater resources, species extinction, and reduced food production. Such natural disasters will follow, and carbon dioxide, the main component of greenhouse gases in the atmosphere, is considered a key factor in global warming. Therefore, to control the greenhouse effect, it is necessary to first solve the CO 2 emission problem. [0003] As a new type of green solvent, ionic liquid has the characteristics of low vapor pressure, non-volatile, wide liquid temperature range and excellent electrochemi...

AI Technical Summary

Problems solved by technology

However, at present, the preparation cost of ionic liquids is high and the process is cumbersome, which limits their large-scale production and application.

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