Process for producing methylisobutylketone and diisobutyl ketone by using acetone

A technology of methyl isobutyl ketone and diisobutyl ketone, applied in the field of preparation of chemical solvents, can solve the problems of large number of equipment, long process flow, large investment, etc., and achieve the effect of high activity and simple preparation process

Inactive Publication Date: 2010-05-26
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

The three-step method has restricted the further development of the process due to the disadvantages of long proce...

Method used

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  • Process for producing methylisobutylketone and diisobutyl ketone by using acetone

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Embodiment 1

[0015] Use freshly boiled distilled water to prepare 1.0mol / L Ni(NO 3 ) 2 , Mg(NO 3 ) 2 , Al(NO 3 ) 3 and 0.5mol / L of Zr(NO 3 ) 4 Metal salt solution; prepare another 1.0mol / L NaOH solution and 0.5mol / L NaOH solution 2 CO 3 solution. According to the catalyst composition Ni: 5.5wt%, MgO: 51wt%, Al 2 o 3 : 9.5wt%, ZrO 2 : 34wt%, Ni, Mg, Al, Zr four kinds of nitrate solutions are made into a mixed solution, and the solution is denoted as A. A certain amount of Na was added to the beaker in advance 2 CO 3 Solution [CO 3 2- The molar weight of = 0.5 (Al 3+ +Zr 4+ ) molar weight], solution A and NaOH solution are simultaneously titrated into the beaker, the rate of addition is controlled, and the stirring is continued to keep the pH between 9 and 10. After the dropwise addition, stir and age in a constant temperature water bath at 60°C for 12 hours, wash and centrifuge until the pH is around 7, perform suction filtration, put the filter cake in an oven, and dry at...

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Abstract

The invention discloses a process for producing methylisobutylketone and diisobutyl ketone by using acetone, relating to a process for preparing chemical solvents. An Ni/MgO-Al2O3-ZrO2 catalytic agent containing 6wt percent of Ni, 60wt percent of MgO, 21wt percent of Al2O3 and 13wt percent of ZrO2 is used in the invention; the catalytic agent is prepared from an NiMgAlZr quadri hydrotalcite compound. Under the conditions that the reaction temperature is 180-280 DEG C, the liquid airspeed is 4.8ml/gcat.h and the mole ratio of hydrogen to ketone is 1, in a fixed bed reactor, the acetone percent conversion is 60 percent, and the selectivity of methylisobutylketone and diisobutyl ketone respectively reaches 63 percent and 24 percent. Methylisobutylketone and diisobutyl ketone can widely serve as solvents for producing high-grade coatings.

Description

technical field [0001] The invention relates to a process method for preparing chemical solvents, in particular to a process method for synthesizing methyl isobutyl ketone and diisobutyl ketone by a one-step vapor phase method of acetone. Background technique [0002] Methyl isobutyl ketone (MIBK) is an excellent medium boiling point solvent with stable chemical properties and can meet the special requirements of high-grade coatings such as solid components, volatilization speed, leveling, coating strength, and appearance. MIBK has Good solubility and excellent miscibility with other solvents and suitable boiling point, widely used as a solvent for the production of high-grade coatings, synthetic p-phenylenediamine rubber anti-aging agents, and also as a solvent for the production of drugs, adhesives and Rare metal extractant. With the rapid development of the automobile industry and high-end coatings, the demand for MIBK continues to increase. [0003] The production meth...

Claims

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Application Information

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IPC IPC(8): C07C49/04C07C45/74C07C45/73B01J23/755
Inventor 申延明吴静郭瓦力宁志高
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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