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A kind of synthetic method of calcium octanoate

A technology of calcium n-octanoate and a synthesis method, which is applied in chemical instruments and methods, separation/purification of carboxylic acid compounds, preparation of carboxylate salts, etc., can solve problems such as limitations, and achieve simple operation, easy realization, and simple reaction conditions. Effect

Active Publication Date: 2022-04-05
YANGTZE UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

Its disadvantage is that there are many types of raw materials and process steps used in this method, and the salt used must be water-soluble salt, which has caused certain restrictions on higher fatty acid metal salts.
Simultaneously, in the prior art, there are very few reports about the synthesis of calcium n-octoate

Method used

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  • A kind of synthetic method of calcium octanoate
  • A kind of synthetic method of calcium octanoate

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[0018] Such as figure 1 , figure 1 It is process flow diagram of the present invention; Present embodiment provides a kind of synthetic method of calcium n-octoate, comprises the following steps:

[0019] (1) N-octanoic acid is mixed with calcium carbonate, and water is added in the mixture, and reaction mixture is obtained after reflux reaction;

[0020] (2) after above-mentioned reaction mixture is filtered and dried, obtain n-octoate calcium and calcium carbonate mixture;

[0021] (3) Add dichloromethane to the mixture of calcium n-octoate and calcium carbonate, shake at room temperature for 30 minutes, and finally filter and evaporate the resulting filtrate to dryness to obtain calcium n-octoate.

[0022] The advantages of the synthetic method of calcium octanoate in the present invention are as follows: Calcium carbonate is an inorganic compound, which is a common substance on the earth, exists in rocks such as aragonite, calcite, chalk, limestone, marble, travertine, a...

Embodiment 1

[0026] Embodiment 1 of the present invention provides a kind of synthetic method of calcium octanoate, comprises the following steps:

[0027] Add n-octanoic acid, calcium carbonate, water and zeolite into a three-necked flask, wherein the mol ratio of n-octanoic acid to calcium carbonate is 1:0.7, and the mol ratio of n-octanoic acid to water is 1:0.7; subsequently, heat up to 80° C., reacting for 5 hours; after the reaction, the above reaction mixture was filtered, dried, and separated to obtain calcium n-octoate, and the yield of obtained calcium n-octoate was 77.1%.

[0028] Such as figure 2 , figure 2 It is the infrared spectrogram of calcium n-octoate in embodiment 1, known from the infrared spectrogram, 1578-1540cm -1 and 1417cm -1 The strong peaks of the carboxyl group are the antisymmetric stretching vibration peak and the symmetrical stretching vibration peak, which belong to COO - characteristics, indicating that there is a carboxyl group COO in the compound ...

Embodiment 2

[0030] Embodiment 2 of the present invention provides a kind of synthetic method of calcium octanoate, comprises the following steps:

[0031] Add n-octanoic acid, calcium carbonate, water and zeolite into a three-necked flask, wherein the molar ratio of n-octanoic acid to calcium carbonate is 1:1, and the molar ratio of n-octanoic acid to water is 1:0.7; subsequently, heat up to 200° C., reacting for 5 hours; after the reaction, the above reaction mixture was filtered, dried, and separated to obtain calcium n-octoate, and the yield of obtained calcium n-octoate was 98.2%.

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Abstract

The invention discloses a synthesis method of calcium n-octanoate, comprising the following steps: mixing n-octanoic acid and calcium carbonate, adding water to the mixture, and obtaining a reaction mixture after reflux reaction; filtering and drying the reaction mixture to obtain n-octanoate A mixture of calcium octanoate and calcium carbonate: add dichloromethane to the above mixture of calcium n-octoate and calcium carbonate, shake at room temperature, and finally filter and evaporate the resulting filtrate to dryness to obtain calcium n-octoate. The present invention directly obtains calcium n-octanoate by using calcium carbonate and n-octanoic acid as raw materials, provides a new synthesis route of calcium n-octanoate, and has simple process conditions and is easy to realize.

Description

technical field [0001] The invention relates to the technical field of calcium n-octoate synthesis, in particular to a method for synthesizing calcium n-octoate. Background technique [0002] Higher fatty acid metal salt, the general formula is R(COO) n Me (R is an alkyl group, Me is a metal ion), mainly Zn, Ca, Cd, Pb, which is characterized by good lubricity, does not reduce the softening point of PVC hard products, and is suitable for the processing of hard PVC pipes and profiled materials. Among them, calcium octanoate is a relatively common higher fatty acid metal salt, which is widely used in various coatings. [0003] Higher fatty acid metal salts are generally synthesized by a two-step method. First, the sodium salt is obtained by reacting the higher fatty acid with sodium hydroxide, and then the sodium salt is replaced with salts of other metal ions and precipitated. Its disadvantage is that there are many kinds of raw materials and process steps used in this meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41C07C51/42C07C53/126
CPCC07C51/412C07C51/42C07C53/126
Inventor 丁康乐韩超谢良成邹梅刘岩
Owner YANGTZE UNIVERSITY
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