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Catalyst for synthesizing 2,6-dimethyl-4-heptanoneand preparation method for catalyst

A technology of diisobutyl ketone and catalyst is applied in the field of catalyst for synthesizing diisobutyl ketone and its preparation field, which can solve the problems of high cost of raw materials and only 14% selectivity of diisobutyl ketone, so as to improve the anti-coagulation resistance. Carbon capacity, good dehydration function, and the effect of improving selectivity

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented new type catalytic material described by this patents allows for faster reactions between different types of molecules without losing their effectiveness or producing unwanted side products. It also enhances its activity over other materials due to increased acidicity compared to previous designs. Overall, these technical features make it possible to create high yields from biomass resources while reducing environmental impact through efficient production processes.

Problems solved by technology

The technical problem addressed in this patents relates to improving the efficiency or quality of producing various types of compounds such as diketonones like dimercaptohexanol and hexam ethyleneglycol monomers called DABCOS among others due to increasing environmental concerns associated with these products.

Method used

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  • Catalyst for synthesizing 2,6-dimethyl-4-heptanoneand preparation method for catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Weigh ZrOCl 2 ·8H 2 O 145g, dissolved in 400mL distilled water to form an aqueous solution, 80g Al 2 o 3 The powder was added to this solution and diluted with 10 (v / v)% NH under vigorous stirring 3 ·H 2 O solution was titrated to pH 9, then stirred for 30 minutes, left for 4 hours to age the precipitate, and then washed with distilled water until Cl-free - until. After drying at 110°C, bake at 550°C for 4 hours to obtain Al 2 o 3 -ZrO 2 Composite carrier. ZrO 2 The content is 40wt%, Al 2 o 3 The content is 60wt%.

[0025] (2) 1.6gNd(NO 3 ) 3 4H 2 O was added to 105mL of distilled water to form an aqueous solution, and 100g of Al was impregnated with this solution 2 o 3 -ZrO 2 Composite carrier, impregnated for 24 hours. Pour off the upper layer of clear water, dry at 110°C for 3 hours, and then bake at 500°C for 6 hours to make the carrier C-1 containing neodymium.

[0026] (3) Add 0.51gPd(NO 3 ) 2 2H 2 O was dissolved in 105 mL of distilled ...

Embodiment 2

[0028] (1)Al 2 o 3 -ZrO 2 The preparation of the composite carrier is the same as step (1) of Example 1.

[0029] (2) 4.8gNd(NO 3 ) 3 4H 2 O was added to 105mL of distilled water to form an aqueous solution, and 100g of Al was impregnated with this solution 2 o 3 -ZrO 2 The composite carrier was impregnated for 24 hours. Pour off the upper layer of clear water, dry at 110°C for 3 hours, and then bake at 500°C for 6 hours to make the carrier C-2 containing neodymium.

[0030] (3) 1.02gPd(NO 3 ) 2 2H 2 O was dissolved in 105 mL of distilled water to make an aqueous solution, and the pH value was adjusted to 3-4. Immerse 100g of C-2 into the palladium solution, and bake it at 400°C for 8 hours after the water evaporates. Catalyst A-2 was prepared. The Nd content of the catalyst was 1.5 wt%, and the Pd content was 0.4 wt%.

Embodiment 3

[0032] (1)Al 2 o 3 -ZrO 2 The preparation of the composite carrier is the same as step (1) of Example 1.

[0033] (2) 9.6gNd(NO 3 ) 3 4H 2 O was added to 105mL of distilled water to form an aqueous solution, and 100g of Al was impregnated with this solution 2 o 3 -ZrO 2 Composite carrier, impregnated for 24 hours. Pour off the upper layer of clear water, dry at 110°C for 3 hours, and then bake at 500°C for 6 hours to make the carrier C-3 containing neodymium.

[0034] (3) 1.51gPd(NO 3 ) 2 2H 2 O was dissolved in 105 mL of distilled water to make an aqueous solution, and the pH value was adjusted to 3-4. Immerse 100g of C-3 into the palladium solution, and bake it at 400°C for 8 hours after the water evaporates. Catalyst A-3 was prepared. The Nd content of the catalyst is 3wt%, and the Pd content is 0.6wt%.

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Abstract

The invention discloses a catalyst for synthesizing 2,6-dimethyl-4-heptanone and a preparation method for the catalyst. The catalyst consists of following three parts in percentage by weight: 0.05-1.5 percent of an active component target, 0.2-8 percent of an auxiliary neodymium Nd and the balance of a composite carrier ZrO2-Al2O3; the weight of the composite carrier is used as a reference, ZrO2 accounts for 10-90 percent. The preparation method comprises the following steps: (1) dipping the composite carrier ZrO2-Al2O3 in a soluble salt solution of Nd, and performing solid-liquid separation, drying and calcining; (2) adding the carrier obtained in the step (1) into a soluble salt solution of Pd, adjusting the pH value to 3-4, dipping, drying and calcining to obtain the product. The catalyst disclosed by the invention has the characteristics that the raw material acetone conversion rate is high, and the product, 2,6-dimethyl-4-heptanone, is high in selectivity.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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