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Cumene catalyst and preparation method thereof

A propylbenzene catalyst, a catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, hydrogenation to hydrocarbons, etc., can solve problems such as low cumene selectivity, and achieve high activity, selectivity, and good effect. Effect

Active Publication Date: 2018-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by this invention is to solve the low problem of AMS conversion rate and cumene selectivity of prior art catalysts, provide cumene catalyst, this catalyst has high AMS conversion rate and cumene selectivity specialty

Method used

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  • Cumene catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Catalyst preparation

[0049] Will length be 5mm, diameter be 2mm cylindrical alumina carrier (specific surface is 125 meters 2 / g, the pore volume is 0.46 ml / g) 1L, mixed with 500 ml of potassium carbonate aqueous solution containing 0.30 g of K, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then mixed with palladium chloride containing 2.7 g of Pd and treated with hydrochloric acid Mix 500 ml of aqueous solution adjusted to pH=3, dry at 80°C for 4 hours, and calcined at 450°C for 4 hours to obtain the desired catalyst (Pd content is 2.7 g / L, K content is 0.30 g / L).

[0050] 2. Catalyst evaluation

[0051] Take 40ml of catalyst and fill it in a fixed-bed reactor, activate it at 50° C. for 4 hours in a hydrogen atmosphere of 0.4 MPa, and then carry out the reaction. Reaction conditions are as follows: reaction temperature is 45 ℃, reaction pressure is 0.3MPa, the mol ratio of hydrogen and AMS in the raw material of reaction is 1.2, and the liquid spa...

Embodiment 2

[0054] 1. Catalyst preparation

[0055] Will length be 5mm, diameter be 2mm cylindrical alumina carrier (specific surface is 125 meters 2 / g, pore volume is 0.46ml / g) 1L, mixed with 500ml of ammonium molybdate aqueous solution containing 0.30g Mo, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then used together with palladium chloride containing 2.7g of Pd Hydrochloric acid adjusted to 500 ml of aqueous solution with pH=3, mixed, dried at 80°C for 4 hours, and calcined at 450°C for 4 hours to obtain the desired catalyst (with a Pd content of 2.7 g / L and a Mo content of 0.30 g / L).

[0056] 2. Catalyst evaluation

[0057] Catalyst evaluation method see embodiment 1.

[0058] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.

Embodiment 3

[0060] 1. Catalyst preparation

[0061] Will length be 5mm, diameter be 2mm cylindrical alumina carrier (specific surface is 125 meters 2 / g, the pore volume is 0.46 ml / g) 1L, mixed with 500 ml of ammonium molybdate aqueous solution containing 0.24 g of potassium carbonate and 0.06 g of Mo, dried at 80°C for 4 hours, calcined at 450°C for 4 hours, and then mixed with Palladium chloride of 2.7 grams of Pd was adjusted to 500 milliliters of aqueous solution of pH=3 with hydrochloric acid and mixed, dried at 80 DEG C for 4 hours, and roasted at 450 DEG C for 4 hours to obtain the required catalyst (the content of Pd was 2.7 grams per liter, and the content of K was 0.24 g / L, the Mo content is 0.06 g / L).

[0062] 2. Catalyst evaluation

[0063] Catalyst evaluation method see embodiment 1.

[0064] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.

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Abstract

The invention relates to a cumene catalyst and a preparation method thereof. The main technical problem is solved that the AMS conversion rate and cumene selectivity of a catalyst in the prior art arelow. The cumene catalyst comprises a carrier and the following active components including 0.05-10 g / L of metal palladium or an oxide of metal palladium and 0-5.00 g / L of Mo or an oxide of Mo. According to the technical scheme, the technical problem is solved well, and the cumene catalyst can be used for a reaction where hydrogen is added into alpha methyl styrene (AMS) to prepare cumene.

Description

technical field [0001] The invention relates to a cumene catalyst, a preparation method thereof, and an application of the catalyst in preparing cumene through hydrogenation of α-methylstyrene. Background technique [0002] At present, the global output of cumene is nearly 10 million tons, and more than 90% of cumene is used to produce phenol and acetone. In this process, the by-product α-methylstyrene (abbreviated as AMS) is usually produced. It is very difficult to separate and remove AMS in the subsequent refining process, but it can be converted into raw material cumene and returned to the oxidation process through hydrogenation, thereby reducing the Reduce the unit consumption of cumene, increase the yield of phenol, save the cost of raw materials, etc., which can not only reduce the consumption of raw materials propylene and benzene, but also improve the technical and economic indicators of the device. [0003] The phenol / acetone production plant with an annual output...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J23/652B01J35/10C07C5/03C07C15/085
CPCC07C5/03B01J23/002B01J23/44B01J23/6525B01J35/633B01J35/615C07C15/085Y02P20/52
Inventor 刘仲能袁东平江兴华涂云宝
Owner CHINA PETROLEUM & CHEM CORP
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