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High-temperature diesel antioxidant and preparation method thereof

An antioxidant and diesel oil technology, applied in the field of diesel additives, can solve the problems of high toxicity, low efficiency, and poor compatibility of diesel oil, etc., and achieve the effects of improved antiknock performance, broad application prospects, and low volatility

Inactive Publication Date: 2011-05-18
JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The present invention is a novel and excellent trialkyl phosphite compound synthesized to solve the shortcomings of the above-mentioned phosphite diesel antioxidants such as high toxicity, poor compatibility with diesel oil, and low efficiency.

Method used

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  • High-temperature diesel antioxidant and preparation method thereof
  • High-temperature diesel antioxidant and preparation method thereof
  • High-temperature diesel antioxidant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Add pentaerythritol, toluene, and tetramethylammonium chloride respectively in a four-neck flask equipped with a thermometer, dropping funnel, and reflux condenser, wherein the quality of toluene is 100% of that of pentaerythritol, and the quality of tetramethylammonium chloride is the amount of pentaerythritol. 2%, set the stirring speed to be 200 rev / min, add dropwise phosphorus trichloride, its molar weight is 4 times of pentaerythritol, dropwise time is 0.5 hour, control temperature at 80 ℃, absorb the hydrogen chloride gas that generates with tail gas absorption bottle , react until no hydrogen chloride gas is generated, and the intermediate dichloropentaerythritol bisphosphite is obtained. The dichloropentaerythritol bisphosphite that generates is transferred to the dropping funnel together with the solvent, and in the four-necked flask, add dodecanol, which is 2 times of the dichloropentaerythritol bisphosphite molar weight, drips into dichloropentaerythritol bisp...

Embodiment 2

[0038] Pentaerythritol, toluene, and tetramethylammonium chloride were metered into a four-necked flask equipped with a thermometer, dropping funnel, and reflux condenser, wherein the quality of toluene was 100% of that of pentaerythritol, and the quality of tetramethylammonium chloride was 100% of that of pentaerythritol. 2% of the amount, set the stirring speed to 200 rpm, dropwise add phosphorus trichloride whose molar weight is 4 times that of pentaerythritol, dropwise time is 0.5 hour, control the temperature at 80 ° C, absorb the generated hydrogen chloride with the tail gas absorption bottle gas, and react until no hydrogen chloride gas is generated to obtain the intermediate dichloropentaerythritol bisphosphite. The generated dichloropentaerythritol bisphosphite is transferred to the dropping funnel together with the solvent, and tetradecyl alcohol is added in a four-neck flask, which is 2 times the molar weight of dichloropentaerythritol bisphosphite. For the pentaery...

Embodiment 3

[0040]Pentaerythritol, toluene, and tetramethylammonium chloride were metered into a four-necked flask equipped with a thermometer, dropping funnel, and reflux condenser respectively. 2% of the amount, set the stirring speed to 200 rpm, dropwise add phosphorus trichloride whose molar weight is 4 times that of pentaerythritol, dropwise time is 0.5 hour, control the temperature at 80 ° C, absorb the generated hydrogen chloride with the tail gas absorption bottle gas, and react until no hydrogen chloride gas is generated to obtain the intermediate dichloropentaerythritol bisphosphite. The dichloropentaerythritol bisphosphite that will generate is transferred to the dropping funnel together with the solvent, and it is 2 times of the dichloropentaerythritol bisphosphite molar weight in the four-necked flask, and dichloro The pentaerythritol bisphosphite solution is added dropwise for 0.5 hours, and the temperature is controlled at 30°C. After the reaction, the solvent was distille...

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Abstract

The invention belongs to a diesel additive, and in particular relates to a phosphite compound high-temperature diesel antioxidant and a preparation method thereof. The preparation method of a trialkyl diphosphite diesel antioxidant comprises the following steps of: reacting pentaerythritol with phosphorus trichloride to generate dichloropentaerythritol diphosphite; and reacting the dichloropentaerythritol diphosphite with long-chain alkane alcohol to generate the trialkyl diphosphite diesel antioxidant. The antioxidant has the prominent effects of preventing oxidation, improving color and the like. The novel trialkyl phosphite compound has low toxicity and volatility and high compatibility with diesel, is environmental-friendly, and has a wide application prospect in the field of diesel additives.

Description

technical field [0001] The invention belongs to diesel oil additives, in particular to a high-temperature diesel oil antioxidant of phosphite compounds and a preparation method thereof. Background technique [0002] Among the major problems facing the world at present, the energy crisis has become a kind of problem that has attracted the attention of human beings. Due to its simple structure, large torque, high thermal efficiency, high fuel utilization rate, and the advantages of diesel engines in terms of energy saving and CO2 emissions, diesel engines cannot be replaced by all heat engines including gasoline engines. Therefore, advanced small The high-speed diesel engine, whose emission has reached the Euro III standard, has become a "green engine", and has become the power unit of many new cars in Europe and America. As a result, the demand for diesel oil is increasing worldwide, and the quality requirements for diesel oil are also increasing. [0003] It is well known ...

Claims

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Application Information

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IPC IPC(8): C10L1/26
Inventor 车春玲
Owner JINAN DEV ZONE XINGHUO SCI & TECH RES INST
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