Process for producing ethylene carbonate

A technology of ethylene carbonate and ethylene oxide, applied in chemical instruments and methods, physical/chemical process catalysts, organic chemistry, etc., can solve the problem of low activity of heterogeneous catalysts and achieve good technical effects

Active Publication Date: 2020-03-27
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
Comparison scheme
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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Patent Type & Authority Patents(China)
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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