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Catalyst for preparing methyl isobutyl ketone and preparation method

A technology of methyl isobutyl ketone and catalyst, which is applied in chemical instruments and methods, physical/chemical process catalysts, carbon-based compound preparation, etc. It can solve the problems of poor thermal stability of catalysts, difficulty in catalyst regeneration, and harsh operating conditions control requirements, etc. problem, to achieve the effect of terminating the polymerization reaction, reducing the generation, and weakening the polymerization function

Active Publication Date: 2015-07-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalysts used in this technology are mainly divided into the following two categories: the first category is the widely used palladium / resin catalyst, which has poor thermal stability, difficult catalyst regeneration, and strict operating condition control requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 60 g Ni(NO 3 )·7H 2 O was added to 200mL distilled water to form an aqueous solution, and 60 grams of alumina carrier was impregnated with this solution for 4 hours. Pour out the residual liquid, dry the nickel-impregnated carrier at 100°C for 6 hours, and then bake at 380°C in air for 6 hours to make the nickel-containing carrier Z-1.

[0022] 0.45 g MnSO 4 4H 2 O was dissolved in 15 mL of distilled water to make an aqueous solution, and then sprayed and soaked on 20 g of nickel-containing carrier Z-1, and dried at 110° C. for 8 hours to obtain catalyst C-1. The catalyst contains 5wt% nickel, MnSO 4 is 1.5 wt%.

Embodiment 2

[0030] 100 g Ni(NO 3 )·7H 2 O was added to 200mL of distilled water to form an aqueous solution, and 60 grams of carrier was impregnated with this solution for 6 hours. Pour out the residual liquid, dry the nickel-impregnated carrier at 110° C. for 8 hours, and then bake at 400° C. in air for 8 hours to make the nickel-containing carrier Z-2.

[0031] 0.6 g MnSO 4 4H 2 O was dissolved in 15 mL of distilled water to make an aqueous solution, and then sprayed and soaked on 20 g of nickel-containing carrier Z-2, and dried at 120° C. for 8 hours to obtain catalyst C-2. The catalyst contains 7wt% nickel, MnSO 4 is 2wt%.

Embodiment 3

[0033] 70 g Ni(NO 3 )·7H 2 O was added to 100mL of distilled water to form an aqueous solution, and 30 grams of alumina carrier was impregnated with this solution for 6 hours. Pour out the residual liquid, dry the nickel-impregnated carrier at 100°C for 6 hours, and then bake at 420°C in air for 6 hours to make the nickel-containing carrier Z-3.

[0034] 0.6 g MnSO 4 4H 2O was dissolved in 15 mL of distilled water to form an aqueous solution, then sprayed and soaked on 20 g of nickel-containing carrier Z-3, and dried at 130°C for 8 hours to obtain catalyst B-3. The catalyst contains 10wt% nickel, MnSO 4 is 2 wt%.

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Abstract

The invention discloses a catalyst for preparing methyl isobutyl ketone, which adopts nickel as an active component, adopts manganese sulfate and / or chromium sulfate, preferably manganese sulfate, as auxiliary agents, and adopts alumina as a carrier. The catalyst comprises, on a basis that the total weight is 100% of, 5 wt%-15 wt%, preferably 5 wt%-10 wt%, of nickel elements, 1 wt%-3.5 wt%, preferably 1.5 wt%-2.5 wt%, of auxiliary agents, and the balance of alumina carriers. The catalyst has a specific surface area of 90-130 m2 / g, and a pore volume of 0.7-1.2 ml / g. The preparation method of the catalyst comprises the following steps: (1) dipping the alumina carrier in a nickel-containing soluble salt solution, performing drying and roasting to obtain a nickel-containing alumina carrier; (2) preparing a sulfate solution, spraying the nickel-containing alumina carrier obtained in step (1) with the sulfate solution, and then drying to obtain the product. The catalyst of the invention is used in reaction for synthesizing methyl isobutyl ketone by an acetone one-step method; when compared with catalysts of the same kind, the catalyst of the invention improves the acetone conversion rate and the methyl isobutyl ketone selectivity.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a catalyst for synthesizing methyl isobutyl ketone by one-step method from acetone and a preparation method thereof. Background technique [0002] Methyl isobutyl ketone (MIBK) is an excellent organic solvent with excellent solubility and stable chemical properties. It is mainly used in paints and resin coatings, and is also one of the raw materials for synthetic rubber anti-aging agents. At the same time, it is also used for the production of drugs, adhesives and rare metal extractants. With the rapid development of the automobile industry and high-grade coatings, the demand for methyl isobutyl ketone continues to increase. [0003] The traditional method of synthesizing methyl isobutyl ketone from acetone is a three-step method, which has problems such as environmental pollution, complicated process, and high production cost. [0004] Currently, the one...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/053C07C49/04C07C45/73
Inventor 王春梅苏杰范丹丹侯学伟李风华季秀珍
Owner CHINA PETROLEUM & CHEM CORP
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