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2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine and application thereof

A technology of pyridinedicarboxylhydrazide and octanone, which is applied in the field of mercury-substituting corrosion-inhibiting additives for alkaline zinc-nickel batteries, can solve problems such as shortened life, dendrites, and mercury toxicity, and achieve migration inhibition, good migration, and corrosion prevention The effect of action

Active Publication Date: 2013-12-25
GUILIN UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

However, zinc electrodes generally have problems such as corrosion, deformation, dendrites, and migration under alkaline conditions, which shorten their lifespan.
In the past, the homogenization of mercury on the surface of zinc was often used to solve this series of problems, but mercury is a toxic and harmful substance that poses a huge threat to human health and environmental protection

Method used

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  • 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine and application thereof
  • 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine and application thereof
  • 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine and application thereof

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Embodiment

[0011] (1) The structural formula of 2-octanone ketone 2,6-pyridinedicarboxylhydrazide:

[0012] .

[0013] (2) The preparation method of 2-octanone condensate 2,6-pyridinedicarboxylhydrazide is:

[0014] a. Weigh 2.988 g of dimethyl 2,6-pyridinedicarboxylate, dissolve it in 40 ml of absolute ethanol with stirring in a water bath at 70 °C, then slowly add 2.1 ml of 35 mmol (2.21 g) of hydrazine hydrate dropwise, and react 4 hours, let stand to cool, then filter, and place the filter cake in a vacuum oven at 50°C to dry to obtain a white cotton-like solid, which is the intermediate product 2,6-pyridinedicarboxylic hydrazide.

[0015] b. Weigh 1 mmol (0.195 g) of the intermediate product 2,6-pyridinedicarboxylhydrazide obtained in step (2) step a, dissolve it in 25 ml of tetrahydrofuran, stir and dissolve in a water bath at 40 °C, add 2- 2 mmol (0.32 ml) of octanone, then slowly add 1 ml of glacial acetic acid as a catalyst, raise the temperature of the water bath to 50°C to...

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Abstract

The invention discloses a Schiff base surface active agent named 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine and application thereof. The structural formula of the 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine is shown in the specification. The 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine is applied to alkaline Zn-Ni batteries as mercury substituting corrosion inhibition additives and used for preventing corrosion, dendritic growth, deformation, migration and the like of zinc electrodes. The 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine can effectively prevent alkaline electrolytes from corroding the zinc electrodes. Moreover, the cyclic voltammetry and zinc migration experiments prove that the 2-octanone condensation compound 2,6-pyridine sym-diformylhydrazine plays good roles in inhibiting the dendritic growth, the deformation and the migration of the pasted zinc electrodes.

Description

technical field [0001] The invention belongs to the technical field of mercury-substituting corrosion-inhibiting additives for alkaline zinc-nickel batteries, in particular to a Schiff base surfactant 2-octanoneketal 2,6-pyridinedicarboxylhydrazide and its use in alkaline zinc-nickel batteries Application as mercury substitute corrosion inhibitor additive. Background technique [0002] With the development of society, the application of secondary alkaline zinc batteries is also increasing. At present, various portable electrical appliances are developing rapidly. Secondary alkaline zinc batteries are widely used in military, aviation, commercial and other fields. However, zinc electrodes generally have problems such as corrosion, deformation, dendrites, and migration under alkaline conditions, which shorten their lifespan. In the past, the homogenization of mercury on the surface of zinc was often used to solve this series of problems, but mercury is a poisonous and harmful...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/86H01M10/26
CPCY02E60/10
Inventor 刘峥刘进谢思维
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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