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Method for preparing tert-butyl hydroperoxide

A technology of tert-butyl hydroperoxide and di-tert-butyl peroxide, applied in the field of preparation of tert-butyl hydroperoxide, can solve problems such as unfavorable environmental protection, a large amount of waste sulfuric acid, etc., and achieves less reaction by-products and low degree of corrosion , the effect of high product purity

Inactive Publication Date: 2016-04-27
茅海强
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this synthesis method is that a large amount of waste sulfuric acid is produced during the reaction process, which is not good for environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1, a kind of preparation method of tert-butyl hydroperoxide, raw materials used are isobutane and di-tert-butyl peroxide, according to a certain ratio, form at high temperature and high pressure, through catalysis, vacuum distillation, crystallization; The mass ratio of the raw material isobutane to di-tert-butyl peroxide is 1:1-3; the high temperature and high pressure conditions are 140-160°C and 1.5-2.5 atmospheres; the catalyst is iron potassium oxalate; The vacuum distillation conditions are 0.1-0.3 atmospheric pressure and the temperature is 30-40°C; the crystallization is to dissolve the collected liquid with distilled water at 20-40°C, then cool down to 1-5°C, stir gently, and statically Set crystallization.

Embodiment 2

[0014] Embodiment 2, in the preparation method of a kind of tert-butyl hydroperoxide described in embodiment 1: the mass ratio of described raw material isobutane and di-tert-butyl peroxide is 1:2.

Embodiment 3

[0015] Embodiment 3, in the preparation method of a kind of t-butyl hydroperoxide described in embodiment 1: described high temperature, high pressure condition is 150 ℃, 2.5 atmospheric pressure.

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Abstract

The invention relates to a method for preparing tert-butyl hydroperoxide. According to the invention, the raw materials are isobutane and di-tert-butyl peroxide, and steps of catalysis, underpressure distillation and crystallization are carried out on the raw materials according to a certain proportion under high temperature and high pressure. According to the invention, the raw materials are isobutane and the di-tert-butyl peroxide with mass ratio being 1:1-3; the high temperature and high pressure condition are 140-160 DEG C and 1.5-2.5 atmospheric pressure; a catalyst is ferric potassium oxalate; the underpressure distillation condition is 0.1-0.3 atmospheric pressure, and temperature is 30-40 DEG C; the crystallization step is characterized in that the collected liquid is dissolved by distilled water at temperature of 20-40 DEG C, then is cooled to the temperature of 1-5 DEG C, is slightly stirred, and is stood for crystallization. The process flow is short, reaction byproduct is less, environment pollution and corrosion degree on production equipment are low, and product purity is high.

Description

technical field [0001] The invention relates to a method for producing organic chemical raw materials, in particular to a method for preparing tert-butyl hydroperoxide. Background technique [0002] Tert-butyl hydroperoxide is the most commonly used tert-alkyl hydroperoxide, which can be used in the fields of emulsion polymerization, aqueous phase polymerization, curing and graft polymerization, and its performance is superior to that of peroxodisulfate and iso Propylbenzene Hydroperoxide and Benzoyl Peroxide. The decomposition products of TBHP are mainly tert-butanol and a small amount of acetone, etc., which are non-corrosive and require little equipment. It is also widely used as a polymerization initiator for styrene, acrylic acid and methacrylic acid. At the same time, it is a vulcanizing agent for natural rubber, which can be used to improve the cetane number of diesel oil and a very important organic synthesis intermediate. In addition, it can also be used in the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C407/00C07C409/04
Inventor 茅海强
Owner 茅海强
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