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A method for catalytically synthesizing glycerol monostearate with roasted hydrocalumite

A technology of glycerol monostearate and hydrocalumite, which is applied in the direction of aluminum compounds, aluminum carbonate compounds, chemical instruments and methods, etc., can solve problems such as environmental pollution and complicated processes, and achieve low cost, simple preparation process, easy separation effect

Active Publication Date: 2021-04-02
SHAOYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of its catalyst involves the construction of a core-shell double-layer structure, the process is complicated, and the traditional co-precipitation method is still used to prepare the hydrotalcite shell, that is, the co-precipitation reaction of various water-soluble metal salt solutions and lye.
In the process of catalyst preparation, a large amount of saline wastewater will inevitably be produced, causing environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Catalyst preparation: 0.2mol Ca(OH) 2 , 0.1mol Al(OH) 3 with 0.05mol Na 2 CO 3 Add to a reactor with 200 mL of water. Raise the temperature to 80°C, react for 2 hours, age for 17 hours, dehydrate and dry the solid to obtain hydrocalumite, put it into a muffle furnace and roast at 400°C for 4 hours to obtain roasted hydrocalumite.

Embodiment 2

[0020] Catalyst preparation: 0.3mol Ca(OH) 2 , 0.1mol Al(OH) 3 with 0.075mol Na 2 CO 3 Add to a reactor with 300 mL of water. Raise the temperature to 60°C, react for 3 hours, age for 30 hours, dehydrate and dry the solid to obtain hydrocalumite, put it into a muffle furnace and roast at 700°C for 2 hours to obtain the roasted hydrocalumite.

Embodiment 3

[0022] Catalyst preparation: 0.1mol Ca(OH) 2 , 0.1mol Al(OH) 3 with 0.025mol Na 2 CO 3 Add to a reactor with 100 mL of water. Raise the temperature to 100°C, react for 1 hour, age for 8 hours, dehydrate and dry the solid to obtain hydrocalumite, put it into a muffle furnace and roast at 300°C for 6 hours, and obtain roasted hydrocalumite.

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Abstract

The invention discloses a method for synthesizing glycerol monostearate by catalyzing roasted hydrocalumite, which uses methyl stearate and glycerin as raw materials, and synthesizes glycerol monostearate under the catalysis of roasted hydrocalumite. The hydrocalumite is based on Ca(OH) 2 with Al(OH) 3 In order to cleanly synthesize the raw materials, the calcinite catalyst in the roasted state can be obtained through roasting. The method provided by the invention has the following advantages: the cost of the catalyst is low, the preparation process is simple and clean, the selectivity to the product is high, and the catalyst and the product are easily separated.

Description

technical field [0001] The invention relates to a synthesis method of glyceryl monostearate, in particular to a method for catalytically synthesizing glycerol monostearate with roasted hydrocalumite, which belongs to the field of chemical synthesis. Background technique [0002] The molecular structure of glyceryl monostearate contains a long-chain alkyl group and two hydrophilic hydroxyl groups, which belong to nonionic surfactants. It can be used as an emulsifier, defoamer, dispersant, thickener, and wetting agent for food, cosmetics, and pharmaceutical ointments, as well as a lubricant, antistatic agent, dripping agent, and antifogging agent for plastics and textiles. processing and other fields. [0003] According to the different raw materials used, the industrialized production route of glycerol monostearate mainly includes: the esterification method of stearic acid and glycerin, the transesterification method of oil or methyl stearate and glycerol. Among them, the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/03C07C69/30B01J23/02B01J37/08B01J35/10C01F7/00
CPCC07C67/03B01J23/02B01J37/082C01F7/782B01J35/60C07C69/30
Inventor 周喜何鹏张超
Owner SHAOYANG UNIV
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