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Polycondensation catalyst, preparation method and application thereof, method for synthesizing diisobutyl ketone and method for synthesizing diisobutyl alcohol

A technology of polycondensation catalyst and diisobutyl ketone, which is applied in the preparation of carbon-based compounds, chemical instruments and methods, and preparation of hydroxyl compounds, etc., can solve the problems of difficult catalyst regeneration, low conversion rate, high reaction temperature, etc., and achieve target product selection High performance, high conversion rate of acetone, high polycondensation activity

Active Publication Date: 2020-06-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to reports, palladium / resin type catalyst (US3,953,517) is widely used in the method of synthesizing methyl-4-heptanone by acetone one-step method at present, but this type of catalyst has poor thermal stability, catalyst regeneration is difficult, and the control requirements of operating conditions harsh
The palladium-loaded activated alumina introduced in Japanese Patent No. 63-119436 is used as a catalyst to synthesize methyl-4-heptanone method, which has high reaction temperature, low conversion rate, and poor selectivity of methyl-4-heptanone. question
And the traditional method of synthesizing methyl-4-heptanone from acetone is mostly carried out under high pressure

Method used

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  • Polycondensation catalyst, preparation method and application thereof, method for synthesizing diisobutyl ketone and method for synthesizing diisobutyl alcohol
  • Polycondensation catalyst, preparation method and application thereof, method for synthesizing diisobutyl ketone and method for synthesizing diisobutyl alcohol
  • Polycondensation catalyst, preparation method and application thereof, method for synthesizing diisobutyl ketone and method for synthesizing diisobutyl alcohol

Examples

Experimental program
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Effect test

Embodiment 1

[0084] (1) Preparation of palladium-platinum / zirconia-alumina catalyst

[0085]Preparation of zirconia-alumina carrier: adding 0.5mol / LZrOCl dropwise to ammonia water with a concentration of 25% by weight 2 ·8H 2 O and Al(NO 3 ) 3 9H 2 O aqueous solution until pH = 6, then reflux at 100°C and 1 atmosphere for 10 hours, and wash the obtained precipitate with deionized water until neutral; dry in air at 100°C for 24h, and then roast to obtain the product ZrO 2 -Al 2 o 3 Carrier (ZrO 2 with Al 2 o 3 The weight ratio is 1:1).

[0086] Prepare 100mL of palladium chloride and chloroplatinic acid aqueous solutions with concentrations of 33.0g / l and 10.4g / l respectively, add 0.5g polyethylene glycol 200 and mix well, and add 50g ZrO 2 -Al 2 o 3 For the carrier, NaOH solution with a concentration of 5% by weight was added dropwise to adjust the pH to about 9, and aged at 30° C. for 8 hours under stirring. Dry at 110°C for 2 hours, and then calcinate at 400°C for 2 hours to...

Embodiment 2-3

[0093] The polycondensation catalyst was prepared according to the method of Example 1, except that the amount of each raw material was adjusted, so that the composition of the prepared polycondensation catalyst was shown in Table 1 below, and the results for the acetone polycondensation reaction were shown in Table 1 below.

Embodiment 4

[0095] The polycondensation catalyst was prepared according to the method of Example 1, except that the amount of each raw material was adjusted, so that the composition of the prepared polycondensation catalyst was shown in Table 1 below, and the results for the acetone polycondensation reaction were shown in Table 1 below.

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Abstract

The invention relates to the field of catalytic materials, and particularly provides a polycondensation catalyst, a preparing method thereof and applications of the catalyst. The catalyst includes a carrier and metal components loaded by the carrier. The carrier comprises a carrier A and a carrier B, the carrier A is zirconia, and the carrier B is a silicon-containing and / or aluminum-containing oxide. The metal components include a metal component A and a metal component B. The metal component A is palladium. The metal component B is a non-palladium VIII-group metal component and / or an IB-group metal component. A diisobutyl ketone preparing method and a diisobutyl carbinol preparing method are provided. The catalyst is high in polycondensation activity, and selectivity of a target product is high. The catalyst is particularly used for acetone polycondensation and can be used for synthesizing diisobutyl ketone with high selectivity and the acetone conversion ratio is high.

Description

technical field [0001] The invention relates to a polycondensation catalyst, a preparation method and application thereof, a method for synthesizing diisobutyl ketone, and a method for synthesizing diisobutyl alcohol. Background technique [0002] As one of the important basic organic raw materials, acetone has a wide range of uses. In addition to being used as a solvent in the preparation of methyl methacrylate and bisphenol A, a series of fine chemical products can be produced through aldol condensation. [0003] In recent years, my country's acetone industry has developed rapidly, and the output of acetone has continued to increase, but the acetone chemical industry is far behind developed countries. In 2008, in the US market, the consumption of acetone for the manufacture of aldol derivatives accounted for 20%, second only to the manufacture of methyl methacrylate and its use as a solvent. At present, my country's acetone consumption capacity is composed of: synthetic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/44B01J23/42B01J23/46C07C45/73C07C49/04C07C29/145C07C31/125
CPCB01J21/04B01J21/066B01J23/002B01J23/42B01J23/44B01J23/468B01J2523/00C07C29/145C07C45/73B01J2523/31B01J2523/48B01J2523/41C07C49/04C07C31/125
Inventor 张晓昕王宣孟祥堃慕旭宏宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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