A method for homogeneously synthesizing calcium glycerol

A technology of calcium glycerol and glycerin, which is applied in the preparation of metal alcohols, organic chemistry, etc., can solve the problems of high energy consumption and low purity of calcium glycerol, and achieve the effects of solving the waste of excess resources, easy operation, and reducing energy consumption

Inactive Publication Date: 2015-10-28
SOUTHEAST UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for homogeneously synthesizing calcium glycerol, so as to solve the problems in the prior art of using glycerol as a raw material to prepare calcium glycerol with huge energy consumption and low purity.

Method used

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  • A method for homogeneously synthesizing calcium glycerol

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Embodiment 1

[0023] Weigh 1 g of calcium oxide and dissolve it in 200 ml of deionized water, filter off the precipitate to obtain a saturated solution of calcium hydroxide. Measure 100ml calcium hydroxide saturated solution and 10ml glycerol (volume ratio 1:0.1) and mix, stir evenly and heat to 30°C, react at 30°C under reflux for 2h, after the reaction, cool the reaction product to room temperature. After washing with ethanol and suction filtration for several times, the solid product was vacuum-dried at 80°C to constant weight, and the obtained white powder was calcium glycerol.

Embodiment 2

[0025] Weigh 1 g of calcium oxide and dissolve it in 200 ml of deionized water, filter off the precipitate to obtain a saturated solution of calcium hydroxide. Measure 100ml calcium hydroxide saturated solution and 50ml glycerol (volume ratio 1:0.5) and mix, stir evenly and heat to 30°C, react at 30°C under reflux for 4h, after the reaction, cool the reaction product to room temperature. After washing with ethanol and suction filtration for several times, the solid product was vacuum-dried at 80°C to constant weight, and the obtained white powder was calcium glycerol.

Embodiment 3

[0027] Weigh 1 g of calcium oxide and dissolve it in 200 ml of deionized water, filter off the precipitate to obtain a saturated solution of calcium hydroxide. Measure 100ml calcium hydroxide saturated solution and 100ml glycerin (volume ratio 1:1) and mix, stir evenly and heat to 50°C, react at 50°C under reflux for 4h, after the reaction, cool the reaction product to room temperature. After washing with ethanol and suction filtration for several times, the solid product was vacuum-dried at 80°C to constant weight, and the obtained white powder was calcium glycerol.

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Abstract

The invention discloses a method for homogeneously synthesizing glycerol calcium, which comprises the following steps: dissolving calcium oxide in deionized water, and removing precipitations by filtering so as to obtain a calcium hydroxide saturated liquid; mixing the calcium hydroxide saturated solution with glycerol in a volume rate of 1: (0.1-5), uniformly mixing the obtained mixture, stopping heating after a reflux reaction is kept for 2-8 h at a temperature of 30-80 DEG C, and cooling the obtained product to room temperature; and carrying out washing and suction filtration on a solid product obtained by the reflux reaction for many times, and carrying out vacuum drying on the obtained product, so that a white powder solid, namely, glycerin calcium is obtained. According to the invention, calcium oxides are prepared into a calcium hydroxide saturated liquid, and then the calcium hydroxide saturated solution is added into glycerin, so that a homogeneous reaction is realized, thereby facilitating the separation and purification of products. A reaction system is a homogeneous liquid, and glycerol calcium generated by reaction is a solid precipitation, so that the reaction can be self-promoted. The whole reaction in the method disclosed by the invention is green, environment-friendly, and easy to operate, and does not corrode equipment.

Description

technical field [0001] The invention relates to the technical field of calcium glycerol synthesis, in particular to a method for homogeneously synthesizing calcium glycerol. Background technique [0002] Polyvinyl chloride plastic (PVC) is one of the five general-purpose plastics. Defects in the structure of polyvinyl chloride lead to polymer degradation under high temperature and high shear processing conditions, causing discoloration of the product and decline in the mechanical properties of the product, affecting its service life. It begins to decompose and release HCl at about 80 ° C, far away Lower than the molding processing temperature of the product, heat stabilizers must be added to make PVC smoothly processed into products. A large number of lead and cadmium heat stabilizers are used in traditional industries, which brings serious environmental problems and poses a huge threat to human health. Many countries have banned or restricted the use of lead and cadmium he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/30C07C29/70
CPCC07C29/70C07C31/30
Inventor 肖国民李聪严晓露周铭昊薛志君黄兵
Owner SOUTHEAST UNIV
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