A kind of catalyst for synthesis of clay-based c22-cycloaliphatic triester and preparation method thereof

A solid catalyst and clay technology, which is applied in the field of clay-based solid catalyst and its preparation, can solve problems such as unfavorable catalyst and product separation, equipment corrosion, environmental pollution, etc., to achieve large-scale industrial production, low production cost, and reduce environmental pollution Effect

Inactive Publication Date: 2015-11-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in the prior art, the catalytic system for preparing C22-cycloaliphatic triesters has toxicity and corrosiveness, which will cause problems such as equipment corrosion and environmental pollution, and is not conducive to the separation of catalysts and products

Method used

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  • A kind of catalyst for synthesis of clay-based c22-cycloaliphatic triester and preparation method thereof
  • A kind of catalyst for synthesis of clay-based c22-cycloaliphatic triester and preparation method thereof
  • A kind of catalyst for synthesis of clay-based c22-cycloaliphatic triester and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Dry the attapulgite, and determine the specific pore volume of the attapulgite to be 2.64mL / g by the water adsorption weighing method; weigh 10kg of the attapulgite after drying to prepare ZnCl 2 26.4L methanol solution with a concentration of 0.1mol / L; while stirring the attapulgite, add the ZnCl 2 Spray the methanol solution on the attapulgite evenly;

[0025] 2. To be impregnated with ZnCl as described in step 1 2 After the attapulgite of methanol solution is naturally dried, it is placed in a roasting furnace, 2 Under the atmosphere, the temperature was raised to 300°C at a rate of 3°C / min, and the mixture was calcined at a constant temperature for 2h and cooled to obtain an attapulgite-based C22-cycloaliphatic triester synthesis catalyst.

Embodiment 2

[0027] 1. Dry the bentonite, and determine the specific pore volume of the bentonite to be 1.12mL / g by the water adsorption weighing method; weigh 10kg of the dried bentonite to prepare ZnCl 2 11.2L of ethanol solution with a concentration of 1.0mol / L; while stirring the bentonite, add the ZnCl 2 Spray all ethanol solution evenly on the bentonite;

[0028] 2. To be impregnated with ZnCl as described in step 1 2 After the bentonite in the ethanol solution is naturally dried, it is placed in a roasting furnace, 2 Under the atmosphere, the temperature is increased to 300°C at a rate of 8°C / min, and the mixture is calcined at a constant temperature for 8 hours and cooled to obtain a bentonite-based C22-cycloaliphatic triester synthesis catalyst.

Embodiment 3

[0030] 1. Dry the kaolin, and determine the specific pore volume of the kaolin to be 1.02mL / g by the water adsorption weighing method; weigh 10kg of the dried kaolin to prepare ZnCl 2 10.2L of methanol solution with a concentration of 0.5mol / L; while stirring the kaolin, add the ZnCl 2 Spray the methanol solution on the kaolin all and evenly;

[0031] 2. To be impregnated with ZnCl as described in step 1 2 After the kaolin in methanol solution is naturally dried, it is placed in a roasting furnace, 2 In the atmosphere, the temperature is raised to 250°C at a rate of 5°C / min, and the catalyst is calcined at a constant temperature for 4h and cooled to obtain a kaolin-based C22-cycloaliphatic triester synthesis catalyst.

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Abstract

The invention belongs to the field of preparation of biological plasticizers and relates to a clay-based solid catalyst for green synthesis of a novel biological plasticizer C22-cyclolipotri-acid ester and a preparation method thereof. The preparation method comprises the following steps: adopting silicate clay and zinc oxide as materials, adopting an equivalent-volume impregnation method to load a proper amount of zinc oxide into inner holes of the silicate clay; then drying to remove a solvent, and by the action of roasting and activation, and obtaining the catalyst for synthesis of the clay-based C22-cyclolipotri-acid ester. The prepared solid catalyst is easily separated from products, so that the corrosion to equipment and the pollution to the environment are reduced; in the loading type catalyst, ZnCl2 and the surface of clay generate chemical bonding action to form a new amorphous substance, and the activity is larger than the sum of the activity of the ZnCl2 and the activity of the clay.

Description

Technical field [0001] The invention belongs to the field of preparation of biological plasticizers, and relates to a clay-based solid catalyst for green synthesis of a new type of biological plasticizer C22-cycloaliphatic triacid ester and a preparation method thereof. Background technique [0002] Phthalate plasticizers are the most widely used plasticizers in the PVC industry. Among them, the amount of bis(2-ethylhexyl) phthalate (DOP) accounts for more than 50% of the total amount of phthalate plasticizers. In recent years, the controversy over the toxicity of phthalate compounds and their possible carcinogenesis has aroused widespread concern. Studies have confirmed that DOP can enter the human body through various channels such as mouth, respiratory tract, intravenous infusion, and skin absorption, and has toxic effects on multiple human systems. Therefore, vigorously developing non-toxic plasticizers and speeding up the elimination of toxic plasticizers are the top prior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/10C07C69/75C07C67/347
Inventor 王车礼刘高伟姚超王建浩曾桂凤周永生李为民
Owner CHANGZHOU UNIV
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