Method for producing ethylene carbonate

A technology of ethylene carbonate and ethylene oxide, applied in the field of ethylene oxide and carbon dioxide production of ethylene carbonate, can solve the problems of low activity of heterogeneous catalysts, and achieve the effect of good technical effect

Active Publication Date: 2018-04-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that there is a problem of low activity of heterogeneous catalysts in the prior art, and a new method for producing ethylene carbonate is provided

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0018] Preparation of aluminum phosphate aluminum oxide APO: Dissolve 58.8g aluminum nitrate and 22.3g diammonium hydrogen phosphate in 500ml deionized water at room temperature, stir for 1 hour, add 10ml concentrated nitric acid for acidification, continue to drop concentrated ammonia water to adjust the pH value to 8 , filter the formed precipitate, wash with deionized water for 3 times, dry at 120°C overnight, and then dry and roast at 500°C to obtain phosphorus aluminum oxide APO-1, determined by ICP-AES, the content of Al in APO-1 Take Al 2 o 3 Calculated as 40%, the content of P is P 2 o 5 Count as 60%.

Embodiment 2

[0020] The preparation steps of aluminophosphate APO are the same as in [Example 1], except that the amounts of aluminum nitrate and diammonium hydrogen phosphate used are respectively 14.7g and 33.5g to obtain aluminophosphate APO-2, which is determined by ICP-AES. The content of Al in -2 is expressed as Al 2 o 3 Calculated as 10%, the content of P is P 2 o 5 Count as 90%.

Embodiment 3

[0022] The preparation steps of aluminophosphate APO are the same as in [Example 1], except that the amounts of aluminum nitrate and diammonium hydrogen phosphate used are respectively 36.8g and 27.9g to obtain aluminophosphate APO-3, which is determined by ICP-AES. The content of Al in -3 is expressed as Al 2 o 3 Calculated as 25%, the content of P is P 2 o 5 Count as 75%.

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Abstract

The invention relates to a method for producing ethylene carbonate and mainly solves the problem of low activity of a heterogeneous catalyst in the prior art. The problem is better solved by means ofthe technical scheme as follows: the method comprises the following steps: ethylene oxide and carbon dioxide are contacted with a catalyst under the reaction condition, wherein the catalyst is prepared from 1wt%-30wt% of alkali metal on the basis of M2O and 70wt%-99wt% of aluminum phosphorus oxide carriers APO. The method can be applied to industrial production of preparation of ethylene carbonatefrom ethylene oxide and carbon dioxide.

Description

technical field [0001] The present invention relates to a kind of method of producing ethylene carbonate, especially a kind of method of producing ethylene carbonate with ethylene oxide and carbon dioxide. Background technique [0002] Ethylene carbonate is an excellent solvent and fine chemical intermediate, and a potential basic raw material for organic chemical industry. At the same time, CO 2 Is a greenhouse gas, how to effectively fix has become one of the most challenging issues in this century. And through ethylene oxide and CO 2 Reactive synthesis of ethylene carbonate is one of the good fixation methods. With the recent increasing attention to the co-production of dimethyl carbonate and ethylene glycol using ethylene carbonate as a raw material, the fixation of CO by cyclic carbonate 2 approach has also received increasing attention. [0003] The heterogeneous catalysts reported so far for the production of cyclic carbonates include MgO, MgO / Al 2 o 3 And Cs / K...

Claims

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Application Information

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IPC IPC(8): C07D317/38B01J27/18
CPCB01J27/1806C07D317/38
Inventor 陈梁锋何文军戈军伟
Owner CHINA PETROLEUM & CHEM CORP
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