Hydroiodic acid purifying method

A purification method, a technology of hydroiodic acid, applied in chemical instruments and methods, separation methods, hydrogen iodide, etc., can solve the problems of long time, high cost, cumbersome steps, etc., and achieve reduced content, good purity and yield, Simple operation effect

Inactive Publication Date: 2018-10-16

TAICANG HUSHI REAGENT

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AI-Extracted Technical Summary

Problems solved by technology

The method has a low removal rate of iodine elemental impurities, and in addition, ...

Abstract

The invention discloses a hydroiodic acid purifying method. According to the purifying method, to-be-treated crude hydroiodic acid passes through an adsorption column filled with a ZIFs (zeolitic imidazolate frameworks) at the flow rate of 10-20 mL/min. In the purifying method, the ZIFs are used for adsorbing elementary iodine, elementary iodine can be removed better, and content of elementary iodine impurities is reduced. The purifying method is simple to operate, and a purified product has higher purity and high yield.

Application Domain

Hydrogen iodideSolid sorbent liquid separation

Technology Topic

ChemistryHydroiodic acid +4

Examples

Experimental program(4)
Comparison scheme(1)

Example Embodiment

[0017] Example 1

[0018] The industrial-grade hydroiodic acid was passed through an adsorption column filled with zeolite imidazole ester framework structure materials (ZIFs) at a flow rate of 15 mL/min at a temperature of 25°C. The amount of zeolite imidazole ester framework structure materials was 10, and the crude hydroiodic acid The quality is 1 meter. The hydroiodic acid in this example was sampled and analyzed, and its elemental iodine impurity content was 0.35 ppm, and the product yield was 97.2%.

Example Embodiment

[0019] Example 2

[0020] The industrial-grade hydroiodic acid was passed through an adsorption column filled with zeolite imidazole ester framework structure materials (ZIFs) at a flow rate of 20 mL/min at a temperature of 40°C. The amount of zeolite imidazole ester framework structure materials was 15 and the crude hydroiodic acid The quality is 1 meter. The hydroiodic acid in this example was sampled and analyzed, and its elemental iodine impurity content was 0.39 ppm, and the product yield was 97.0%.

Example Embodiment

[0021] Example 3

[0022] Industrial-grade hydroiodic acid was passed through an adsorption column filled with zeolite imidazole ester framework structure materials (ZIFs) at a flow rate of 20 mL/min at a temperature of 20°C. The amount of zeolite imidazole ester framework structure materials was 12, and the crude hydroiodic acid The quality is 1 meter. The hydroiodic acid of this example was sampled and analyzed, and its elemental iodine impurity content was 0.43 ppm, and the product yield was 96.5%.

PUM

Description & Claims & Application Information

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