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Catalyst used for preparing 2-alkylanthraquinone, and preparation method and application thereof

A technology of alkyl anthraquinone and catalyst is applied in the field of composite acid catalyst and preparation thereof, and can solve the problems of insufficient performance of molecular sieve, unsatisfactory reaction effect and low selectivity, etc.

Active Publication Date: 2015-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is that the conversion rate of 2-(benzoyl)benzoic acid is low, and the selectivity of anthraquinone is not high
At present, due to the limitation of catalyst performance, the process of synthesizing anthraquinone cannot realize the continuous operation of fixed bed, because the continuous operation of fixed bed needs to shape the catalyst into particles with larger particle size, and after the fine particles of Beta molecular sieve are formed, Its outer surface decreases sharply, and the performance of molecular sieve cannot be fully exerted, resulting in unsatisfactory reaction effect

Method used

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  • Catalyst used for preparing 2-alkylanthraquinone, and preparation method and application thereof
  • Catalyst used for preparing 2-alkylanthraquinone, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation steps of a preparation method of the catalyst of the present invention are as follows:

[0031] (1) Weigh 30 grams of Beta zeolite, 40 grams of hexahydrate La(NO 3 ) 3 ·6H 2 O was mixed thoroughly with 150 ml of water, and dried at 120°C for 6 hours to obtain Beta zeolite containing rare earth metals.

[0032] (2) Add 105 grams of Zr(NO 3 ) 4 ·5H 2 O, 14 grams of ammonium sulfate, 150 grams of water and 35 grams of aluminum hydroxide are thoroughly mixed, and dried at 100°C for 12 hours to obtain aluminum oxide containing zirconium and sulfate radicals.

[0033] (3) The Beta zeolite containing rare earth metals obtained in step (1) and the alumina containing zirconium and sulfate groups obtained in step (2) are thoroughly mixed, and then an appropriate amount of water is added, fully kneaded into a plastic paste, and extruded into Four-leaf clover strips in cross section were dried at 180°C for 8 hours to obtain the catalyst of the present invention, numbered E...

Embodiment 2~7

[0037] The preparation method of the catalyst in each example is the same as that in Example 1, and the difference lies in the composition, evaluation conditions and evaluation results. The specific catalyst composition is shown in Table 1, the evaluation conditions are shown in Table 2, and the evaluation results are shown in Table 3.

Embodiment 8

[0039] A preparation method of the catalyst of the present invention is the same as that of Example 3. The difference is that the catalyst preparation step (1) and step (2) are combined together, that is, La(NO 3 ) 3 ·6H 2 O, Beta zeolite, ammonium sulfate, Zr(NO 3 ) 4 ·5H 2 O, alumina, nitric acid and water are fully kneaded into a plastic paste, extruded into a four-leaf clover strip, dried at 180°C for 8 hours to obtain the catalyst of the present invention, number E-8. The composition of the catalyst is shown in Table 1. The evaluation conditions are shown in Table 2, and the evaluation results are shown in Table 3.

[0040]

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Abstract

The invention discloses a composite acid catalyst used for synthesizing 2-alkylanthraquinone, a preparation method thereof, and an application thereof in preparing 2-alkylanthraquinone. The catalyst comprises the components of rare earth metal, Beta zeolite, SO4<2->, zirconium and a refractory inorganic oxide. According to the weight of the catalyst, the catalyst comprises 5-40% of Beta zeolite, 0.1-20% of rare earth metal (calculated according to oxide), 5-40% of zirconium (calculated according to zirconium oxide), 0.5-20% of sulfate, and balance of the refractory inorganic oxide. When the catalyst provided by the invention is used for synthesizing 2-alkylanthraquinone from 2-(4'-alkylbenzoyl)benzoic acid, The catalyst has the characteristics such as environment friendliness, high activity, high selectivity, and high efficiency. The catalyst is especially suitable for fixed bed processes.

Description

technical field [0001] The invention relates to a composite acid catalyst for synthesizing 2-alkylanthraquinone and its preparation method, especially used in the process of preparing 2-alkylanthraquinone by using 2-(4'-alkylbenzoyl)benzoic acid as raw material The catalyst and its preparation method, and the application of the catalyst in the preparation of 2-alkyl anthraquinone. Background technique [0002] Alkyl anthraquinone is an important fine chemical raw material, with C 1 ~C 5 Alkyl derivatives are more important, among which 2-alkylanthraquinones are the most practical, mainly used as hydrogen peroxide synthesis catalysts, and also as dye intermediates, photosensitizers for degrading resins, pharmaceutical and pesticide intermediates, etc. With the rapid development of global hydrogen peroxide and synthetic resin industries, the demand for 2-alkylanthraquinones, especially high-quality 2-alkylanthraquinones, has increased rapidly, making 2-alkylanthraquinones a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/70C07C50/16C07C46/00
Inventor 刘全杰方向晨贾立明徐会青尹泽群王伟
Owner CHINA PETROLEUM & CHEM CORP