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Device for converting CO and CO2 into isatoic anhydride

A technology of isatoic anhydride and CO2, applied in the direction of organic chemistry, can solve the problems of many by-products, low product purity, low conversion efficiency, etc., and achieve the effect of increasing the contact area

Active Publication Date: 2018-05-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to overcome CO, CO in the prior art 2 Due to the disadvantages of low conversion efficiency, low product purity, and many by-products, the present invention provides a method for converting CO, CO 2 For the device of isatoic anhydride, a new and efficient synthesis method of isatoic anhydride can greatly increase CO, CO 2 The contact area with the reaction liquid can absorb CO and CO efficiently 2 , and a concise and rapid synthesis of isatoic anhydride in high yield

Method used

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  • Device for converting CO and CO2 into isatoic anhydride
  • Device for converting CO and CO2 into isatoic anhydride

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: Excessive waste gas CO, CO 2 Use the exhaust pump 1 to pass into the material buffer chamber 3 from the inlet port 2 with a material ratio of 1:1, heat it through the heating resistor 4 to keep the temperature at about 60 ° C, and after buffering treatment, wait for CO, CO 2 Thoroughly mix and suck the mixed gas into the adiabatic reaction chamber 5 together. Configure the DMF solution of o-iodoaniline, and add 5 mol% Pd(PPh3)4 (as a catalyst) and 2 times the equivalent of CsOAc powder into the solution to obtain a mixed reaction solution, which is added to the reaction solution preparation chamber 7. Turn on the magnetic stirrer 8 to drive the stirring bar 9 to fully mix the reaction solution while maintaining the temperature of the reaction solution at about 60°C. Under the action of the ultra-fine DMF atomizer 10, the reaction solution is sprayed into the air to form a mist reactant 11 with an average droplet diameter of 0.05-0.1 mm. In the adiabatic...

Embodiment 2

[0022] Embodiment 2. The difference between this embodiment and Embodiment 1 is that the ratio of reactants is different. In this embodiment, excess waste gas CO, CO 2 With exhaust pump 1, pass into material buffer chamber 3 from inlet channel 2 with the amount ratio of 1:1, configure the DMF solution of o-iodoaniline, and with the Pd of 1mol% (PPh3) 4 (as catalyst), 2 Double the equivalent of CsOAc powder is added to the solution to obtain a mixed reaction solution, which is added to the reaction solution preparation chamber 7 .

Embodiment 3

[0023] Embodiment 3. The difference between this embodiment and Embodiment 1 is that the ratio of reactants is different. In this embodiment, excess waste gas CO, CO 2With exhaust pump 1, pass into material buffer chamber 3 from inlet channel 2 with the amount ratio of 1:1, configure the DMF solution of o-iodoaniline, and with the Pd of 1mol% (PPh3) 4 (as catalyst), 1 Double the equivalent of CsOAc powder is added to the solution to obtain a mixed reaction solution, which is added to the reaction solution preparation chamber 7 .

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Abstract

The invention discloses a device for converting CO and CO2 into isatoic anhydride. The device comprises a material buffer chamber, a heat insulation reaction chamber and a reaction liquid preparationchamber, an air inlet passage is arranged on the material buffer room, a heating resistor is arranged on the upper portion of the material buffer chamber, the lower portion of the material buffer chamber is communicated with the heat insulation reaction chamber through a control valve, the bottom of the heat insulation reaction chamber is arranged to be inclined, the bottommost end of the heat insulation reaction chamber is provided with a communicating pipe leading a reaction product out, the heat insulation reaction chamber is internally provided with a propelled stirrer, a magnetic stirreris arranged at the bottom of the reaction liquid preparation chamber, a stir bar and a nebulizer are arranged in the reaction liquid preparation chamber on the upper portion of the magnetic stirrer, and the nebulizer makes reaction liquid in the reaction liquid preparation chamber sprayed into air in a superfine mist mode to react with reaction gas, in combination with the propelled stirrer, gas-liquid phase reactant is fully stirred and subjected to convection, the contact area is increased, and the reaction rate and the reaction speed are increased.

Description

technical field [0001] The present invention relates to CO, CO 2 Conversion device technical field, especially relates to a kind of conversion CO, CO 2 Device for isatoic anhydride. Background technique [0002] In the coal chemical industry, carbon monoxide is a common poisonous gas. It is colorless, odorless, and difficult to be found by people. It is very dangerous for people to be exposed to CO gas, and even their lives will be threatened. As a greenhouse gas, carbon dioxide has the functions of heat absorption and heat insulation. It is discharged along with automobile exhaust and human production and life, so that the heat radiated by the sun to the earth cannot be emitted to outer space, leading to global warming. Isatoic anhydride and its homologues are important raw materials for medicines, pesticides, and dyes, and are also important intermediates for the herbicide bendazone. [0003] At present, there are physical and chemical methods to absorb carbon monoxide....

Claims

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Application Information

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IPC IPC(8): C07D265/26
CPCC07D265/26
Inventor 杨克左嘉琦汤义涵纪虹曹传先
Owner CHANGZHOU UNIV
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