Preparation method of catalyst for hexone synthesis by acetone hydrogenation and application

A technology of methyl isobutyl ketone and catalyst, applied in the field of catalysis, can solve problems such as high cost, reduce MIBK production cost, and easy loss of active components, and achieve the effects of low cost, strong raw material adaptability, and mild operating conditions

Inactive Publication Date: 2012-10-03
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst of the present invention is composed of nickel, transition metal oxide and alumina, and is prepared by impregnation method. The preparation method is simple, and has good activity, stability and selectivity. Due to the selection of inorganic carrier, there is no Pd / resin catalyst in operation. The problem of equipment corrosion caused by the loss of initial sulfonate groups; in addition, the use of non-noble metal nickel as the active component overcomes the shortcomings of easy loss of active components and high cost of palladium-based catalysts, which can greatly reduce the production cost of MIBK

Method used

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  • Preparation method of catalyst for hexone synthesis by acetone hydrogenation and application
  • Preparation method of catalyst for hexone synthesis by acetone hydrogenation and application

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Effect test

Embodiment 1

[0029] Prepare catalyst of the present invention

[0030] Mix 42.8g of aluminum oxide, 57.2g of zinc oxide and 2g of methylcellulose for 30 minutes, add 80ml of 3wt% dilute nitric acid solution, mix for 20 minutes, roll into a 3mm ball in a granulator, and dry at 120°C for 12 hours , calcined at 600°C for 3 hours to obtain a composite carrier; then dissolved 214.6g of nickel nitrate in water to obtain a clear solution, impregnated the composite carrier step by step, dried at 120°C for 12 hours, and calcined at 500°C for 3 hours to obtain NiO / Al 2 o 3 -ZnO catalyst; finally, put the prepared spherical catalyst into a tubular reactor, raise the temperature to 500°C in the air under normal pressure, and then change the water vapor treatment at this temperature for 6 hours, and then pass in dry air to purge and cool down , The total water intake during steam treatment is 250g.

[0031] The number of the catalyst prepared above is A, wherein the nickel oxide content is 35.3 wt%, ...

Embodiment 2

[0033]Mix 100g of alumina and 2g of methyl cellulose for 30 minutes, add 85ml of 3wt% dilute nitric acid solution, mix for 20 minutes, roll into a 3mm ball in a granulator, dry at 120°C for 12 hours, and bake at 600°C for 3 hours , to obtain an alumina carrier; then dissolve 115.8g of nickel nitrate, 148.1g of manganese nitrate and 10g of citric acid in water to form a clear solution, impregnate the alumina carrier step by step, dry at 120°C for 12 hours, and roast at 500°C for 3 hours to prepare The finished catalyst was obtained; finally, the above-mentioned catalyst was loaded into a tubular reactor, and the temperature was raised to 500°C in the air under normal pressure, and then changed to steam at this temperature for 6 hours, and then dry air was introduced to purge and cool down. The total water intake during the steam treatment is 250g.

[0034] The catalyst number prepared above is B, wherein the nickel oxide content is 16.3 wt%, the manganese oxide content is 28.4 ...

Embodiment 3

[0036] Another catalyst C was prepared according to the method of Example 1, except that the composite support was subjected to hydrothermal treatment first, and then the active component nickel was introduced by an impregnation method. The content of the components is the same as that of catalyst A, wherein the nickel oxide content is 32.5 wt%, the zinc oxide content is 39.2 wt%, and the balance is aluminum oxide.

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Abstract

The invention belongs to the technical field of catalysis, and relates to a preparation method of a catalyst for hexone synthesis by acetone hydrogenation and an application; the catalyst is composed of active component nickel loaded on an alumina carrier modified by transition metal oxides. The preparation method of the catalyst comprises two procedures: the first one is that transition metal oxides and alumina are mixed, molded, dried, roasted, and subject to hydro-thermal treatment, and the active component Ni is immersed to obtain the catalyst; the second one is that an alumina carrier is prepared firstly, then transition metal oxides and Ni are introduced by an immersion method, and finally hydro-thermal treatment is performed to obtain the catalyst. The catalyst of the invention adopts non-noble metal as the main active component, is simple in preparation, low in cost, strong in raw material adaptability, long in service life, and high in activity and selectivity, and combines three catalytic functions of acetone condensation, dehydration, and hydrogenation as a whole, and the reaction process flow is simplified greatly.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and relates to a preparation method and application of a catalyst for synthesizing methyl isobutyl ketone by hydrogenation of acetone; specifically, it relates to the preparation of a catalyst for synthesizing methyl isobutyl ketone by one-step hydrogenation of acetone Method and use It is a technological process for synthesizing methyl isobutyl ketone by one-step method of hydrogenation. Background technique [0002] Methyl isobutyl ketone (MIBK) is an excellent medium-boiling solvent and chemical intermediate, which can be used as a solvent for paint, nitrocellulose, ethyl cellulose, audio and video tapes, paraffin and various natural synthetic resins; in the refining of lubricating oil dewaxing agent; rare earth metal, tantalum and niobium salt extractant; anti-aging agent raw material; pesticide extractant, etc. In recent years, with the continuous expansion of application fields, the dema...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J23/889B01J23/755B01J23/86C07C49/04C07C45/74C07C45/73
Inventor 于海斌张景成南军耿姗曲晓龙张玉婷刘新普石芳杨建国
Owner CHINA NAT OFFSHORE OIL CORP
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