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A kind of method for preparing ketone organic compound

A technology of organic matter and ketones, applied in the field of organic matter preparation, can solve problems such as separation difficulties, increased acetone production costs, and cumene method not in line with actual national conditions

Active Publication Date: 2021-09-10
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The acetone production methods in the above reports all use benzene and propylene in petrochemical industry as raw materials. In the environment of rich coal and little oil and gas in my country, the cumene method does not meet the actual national conditions.
And most of the catalysts used in the cumene method are homogeneous catalysts at present, and there are problems such as separation difficulties and equipment corrosion when using homogeneous catalysts, which increases the production cost of acetone

Method used

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  • A kind of method for preparing ketone organic compound
  • A kind of method for preparing ketone organic compound
  • A kind of method for preparing ketone organic compound

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0083] Preparation of raw material gas in this application: The raw material enters the reactor in the following ways, such as the raw material methyl acetate is kept at a constant temperature under a water bath, and the dilution gas is passed into for bubbling, and the mixed gas (ie raw material gas) carrying the raw material vapor is passed into the fixed bed for reaction In the reactor, the amount of material entering the reactor can be adjusted according to the reactant gas flow rate. The saturated vapor pressure of raw materials under different temperature conditions can be calculated by the following formula:

[0084] lgP*=A–B / (t+C)

[0085]Among them, A, B, and C are the physical parameters of the raw materials, which can be learned from the Lang's Chemistry Handbook, and t represents the temperature. This allows the calculation of the saturated vapor pressure of the feedstock at any temperature. The amount of material entering the reactor per unit time can be calcula...

Embodiment 1

[0111] The 1# catalyst packing of 1g is among the fixed-bed reactor of 8 millimeters inside diameter, carries out preactivation to 1# catalyst, and its condition is N 2 The flow rate is 30ml / min, raised to 500°C at a rate of 2°C / min, and kept at 500°C for 1 hour, then dropped to the required reaction temperature of 320°C in a nitrogen atmosphere, and the pressure of the reaction system was raised to 20bar with nitrogen, The mass space velocity of raw material methyl acetate is 0.3h -1 , the diluent gas is N 2 , the volume percentage of the diluent gas in the raw material gas is 80%, and the ketation reaction results are shown in Table 1 under this condition.

Embodiment 2-10

[0113] The reaction conditions are the same as in Example 1, except that the catalysts are respectively 2-10#, and the reaction results are as shown in Table 1.

[0114] The result of table 1 methyl acetate ketoylation reaction under different catalysts

[0115]

[0116] It can be seen from Table 1 that the listed acidic molecular sieves and their metal-modified molecular sieves can convert methyl acetate into acetone.

[0117] 2.2 Ketoylation results at different reaction temperatures

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Abstract

The application discloses a method for preparing organic ketones. The raw material gas passes through a reactor carrying an acidic molecular sieve catalyst to react to obtain organic ketones; the raw material gas includes reaction raw materials; the reaction raw materials are selected from At least one of the compounds of the shown structural formula; wherein, R 1 from C 1 ~C 10 One of the hydrocarbon groups; R 2 Choose from H, C 1 ~C 10 One of the hydrocarbon groups. In formula I, the carbonyl ortho-carbon contains α-hydrogen atoms. Compared with traditional elemental / supported metal catalysts, the method for preparing ketone organics provided by the invention has the advantages of high reactivity, easy availability of raw materials, simple preparation process, etc., and has good industrial application prospects.

Description

technical field [0001] The application relates to a method for preparing ketone organic matter, which belongs to the technical field of organic matter preparation. Background technique [0002] Acetone is an important raw material for organic synthesis, used in the production of epoxy resin, polycarbonate, plexiglass, medicine, pesticides, etc.; or in the manufacture of acetic anhydride, diacetone alcohol, chloroform, iodoform, epoxy resin, polyisoprene Important raw materials for rubber, methyl methacrylate, etc. It is also a good solvent, used in coatings, adhesives, acetylene in steel cylinders, etc. It is also used in industries such as smokeless gunpowder, acetate fiber, and spray paint. It is also used as a diluent, cleaning agent and extractant, and is used as an extractant in oil and other industries. [0003] According to public information, acetone, also known as dimethyl ketone, is the most important ketone in the series of saturated fatty ketones. It is one of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C49/08C07C49/04C07C45/49C07C45/48C07C49/215
CPCC07C45/48C07C45/49C07C49/08C07C49/04C07C49/215
Inventor 周子乔刘中民朱文良刘红超刘勇倪友明
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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