Preparation method of isobutyl ketone synthesis catalyst

A technology of isobutyl ketone and catalyst, which is applied in the field of preparation of nickel-copper bimetallic catalysts, can solve the problems of easy loss of active components, high cost, and reduced loading of metal salts, and achieves good industrial application prospects and suitable acid strength , to avoid the effect of specific surface area decrease

Active Publication Date: 2014-03-05
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using non-precious metal nickel and copper as active components overcomes the shortcomings of easy loss of active components and high cost of palladium-based catalysts, and can greatly reduce the production cost of MIBK; in addition, due to the selection of inorganic carriers, there is no Pd / resin catalyst in operation Corrosion of equipment caused by the loss of initial sulfonate groups; more importantly, since the alkaline earth metal oxide / alumina composite carrier is prepared by the sol-gel method, the loading of metal salts in the subsequent impregnation step is greatly reduced, and one-step impregnation can obtain The ideal loading of active components greatly simplifies the preparation steps, and at the same time avoids the problems of specific surface area loss and poor dispersion of active components caused by multi-step impregnation; another advantage of this method is that the preparation of alkaline earth metals by sol-gel method The oxide / alumina composite carrier has the advantages of good dispersion of active components, large specific surface area, moderate acid strength and acid distribution, and thus has higher activity stability and selectivity

Method used

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  • Preparation method of isobutyl ketone synthesis catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare catalyst of the present invention

[0029] (1) Carrier preparation: 200g aluminum sol (solid content 30wt%), 256.4g magnesium nitrate, 10g polyethylene glycol (PEG400) and appropriate amount of deionized water were mixed and stirred until completely dissolved, then heated to 90°C and stirred and refluxed for 2 hour to form a transparent sol; the above sol was evaporated at a constant temperature at 90°C to form a xerogel, fully ground into a fine powder, and then roasted at 450°C for 4 hours to obtain a powdered magnesium oxide / alumina composite oxide; take the above composite oxide Mix 100g of material powder and 2g of methyl cellulose for 10min, add 80ml of 3wt% dilute nitric acid solution, mix well, roll the ball into a 3mm ball in a granulator, then dry at 120°C for 12 hours, and roast at 500°C for 3 hours , to prepare magnesium oxide / alumina composite carrier;

[0030] (2) Catalyst preparation by impregnation method: dissolve 79.9g nickel nitrate, 18.9g co...

Embodiment 2

[0034] Another catalyst B was prepared according to the method of Example 1, and the component content was the same as that of catalyst A, except that the composite carrier was subjected to hydrothermal treatment first, and then the active components nickel and copper were introduced by impregnation.

[0035] (1) Carrier preparation: 200g aluminum sol (solid content 30wt%), 256.4g magnesium nitrate, 10g polyethylene glycol (PEG400) and appropriate amount of deionized water were mixed and stirred until completely dissolved, stirred and refluxed at 90°C for 2 hours to form a transparent Sol; then evaporate at constant temperature to form xerogel, fully grind into fine powder, and then roast at 450°C for 3 hours to obtain powdered magnesium oxide / alumina composite oxide; after ball forming (3mm), dry at 120°C for 12 hours , calcined at 500°C for 3 hours to obtain a magnesium oxide / alumina composite carrier;

[0036] (2) Hydrothermal treatment: put the spherical carrier prepared i...

Embodiment 3～8

[0040] Catalysts C-G were prepared according to the method of Example 1, except that the catalyst composition and the type of alkaline earth metal oxide were changed. Respectively C (nickel 5.2wt%, copper 3.3wt%, magnesium oxide 12.5wt%, aluminum oxide content is the balance), D (nickel 19.5wt%, copper 13.8wt%, magnesium oxide 46.1wt%, aluminum oxide content is balance), E (nickel 15.2wt%, copper 8.9wt%, calcium oxide 29.5wt%, alumina content is the balance), F (nickel 16.5wt%, copper 5.6wt%, strontium oxide 8.2wt%, aluminum oxide content is the balance), G (nickel 13.5wt%, copper 14.6wt%, barium oxide 20.3wt%, alumina content is the balance).

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Abstract

The invention relates to a preparation method of an isobutyl ketone synthesis catalyst. The catalyst is prepared by loading bimetallic nickel and copper on alkaline-earth metallic oxide / aluminum oxide composite carrier. The preparation method of the catalyst comprises the three steps of: firstly adopting a sol-gel method to prepare the alkaline-earth metallic oxide / aluminum oxide composite carrier; then introducing active metal nickel and copper by an immersion method; and finally carrying out water hydrothermal treatment to prepare the catalyst. The preparation method has the advantages of simplicity, high activity and selectivity, integration of three catalysis functions such as condensation, dehydration and hydrogenation of acetone, and simple reaction process flow.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and is a preparation method of a catalyst for synthesizing isobutyl ketone, in particular, it relates to a nickel-copper bimetallic compound for synthesizing methyl isobutyl ketone and diisobutyl ketone by one-step hydrogenation of acetone Catalyst preparation method. Background technique [0002] Methyl isobutyl ketone (MIBK) is widely used. It is an excellent middle-boiling point solvent and chemical intermediate. It has stable chemical properties, good solubility, miscibility and suitable boiling point. Base fibers, audio and video tapes, paraffin and various natural synthetic resin solvents; dewaxing agents in lubricating oil refining; extractants of rare earth metals and tantalum and niobium salts; raw materials for anti-aging agents; pesticide extractants, etc. In recent years, with the rapid development of the automobile industry and high-grade coatings, the demand for MIBK at home and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78C07C49/04C07C45/73C07C45/74
Inventor 张景成南军于海斌张玉婷耿姗刘新普曲晓龙杨建国石芳
Owner CHINA NAT OFFSHORE OIL CORP
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