Catalyst, preparation method of catalyst and application of catalyst for catalyzing regeneration of effective anthraquinone from anthraquinone degradation product

A catalyst and oxide technology, applied in the chemical industry, can solve the problems of poor regeneration effect, difficulty in meeting the production needs of hydrogen peroxide, and low total conversion rate

Inactive Publication Date: 2018-06-22
ZHEJIANG BALING HENGYI CAPROLACTAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent application CN106540685A provides a method for preparing an alumina-supported anthraquinone degradation product regeneration catalyst containing at least one IIA metal element and at least one second metal element and regenerating a working fluid. It has a certain regeneration effect, but it has a poor regeneration effect on other types of degradation products such as hydroxyanthraquinone and tetrahydroanthraquinone epoxide, so the total conversion rate of anthraquinone degradation products into effective anthraquinones is low. , but it is difficult to meet the actual production needs of producing hydrogen peroxide

Method used

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  • Catalyst, preparation method of catalyst and application of catalyst for catalyzing regeneration of effective anthraquinone from anthraquinone degradation product

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preparation example Construction

[0021] On the other hand, the present disclosure also provides a method for preparing a catalyst, the method comprising: loading an active component precursor on a carrier to obtain a loaded carrier, and then calcining the loaded carrier; The active component precursor contains a compound containing an alkali metal element, a compound containing an alkaline earth metal element, and a compound containing a transition metal element of the fourth period; the loading of the active component precursor makes the catalyst prepared by The amount of the carrier is based on the oxide, the content of the alkali metal element is 0.00001-30% by weight, the content of the alkaline earth metal element is 0.0001-60% by weight, and the content of the transition metal element of the fourth period is The content is 0.00001-30% by weight.

[0022] Wherein, optionally, the loading amount of the active component precursor is such that in the prepared catalyst, based on the amount of the carrier, th...

Embodiment 1

[0044] Weigh 2.4g of sodium nitrate, 31.6g of calcium nitrate tetrahydrate and 5.8g of cobalt nitrate hexahydrate to prepare 130mL impregnating solution, add the above impregnating solution dropwise to 150.0g activated alumina under stirring, and impregnate at 35°C 8h, then rotary evaporated at 60°C to remove a little excess water, the obtained solid was dried at 110°C for 6h, then raised to 550°C at 10°C / min in air atmosphere and kept for 4h, the final catalyst was obtained, expressed 5Ca1Co0.58Na / Al 2 o 3 . Weigh 20g of catalyst and fill it into a stainless steel fixed bed with an inner diameter of 10mm. The working fluid is boosted and metered by a metering pump and flows through the catalyst bed from the bottom of the reactor with a space velocity of 1.8h -1 , the reaction temperature was 60°C, and samples were taken for analysis after 6 hours of reaction. Quantitative analysis of each component was carried out by gas chromatography, and the results are listed in Table ...

Embodiment 2

[0046] Weigh 2.4g of sodium nitrate, 31.6g of calcium nitrate tetrahydrate and 6.2g of 50% manganese nitrate solution, and prepare 130mL impregnating solution, and add the above impregnating solution dropwise to 150.0g activated alumina under stirring, at 30°C Immerse under low temperature for 8h, then remove slightly excess water by rotary evaporation at 60°C, dry the obtained solid at 110°C for 6h, then raise it to 550°C at 10°C / min in air atmosphere and keep it for 4h to obtain the final catalyst , expressed as 5Ca1Mn0.58Na / Al 2 o 3 . Catalyst evaluation is the same as in Example 1.

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Abstract

The present disclosure relates to a catalyst. The catalyst comprises a carrier and an active component supported on the carrier, and the active component comprises 0.00001-30 wt% of an alkali metal element, 0.0001-60 wt% of an alkaline-earth metal element and 0.00001-30 wt% of a fourth periodic transition-metal element. The present invention also provides a preparation method of the catalyst, an application of the catalyst for catalyzing regeneration of effective anthraquinone from an anthraquinone degradation product, a regeneration method of a circulating working fluid in the process of producing hydrogen peroxide by an anthraquinone method and a method for producing the hydrogen peroxide. The catalyst provided by the present invention effectively improves the regeneration effect of thecatalyst on the anthraquinone degradation product, significantly reduces accumulation of the anthraquinone degradation product in the working fluid, and improves the content of the effective anthraquinone in the working fluid, thereby facilitating reduction of the production costs and improvement of the production efficiency.

Description

technical field [0001] The present disclosure relates to the field of chemical industry, in particular, to a catalyst, a preparation method of the catalyst, the use of the catalyst in catalyzing the regeneration of anthraquinone degradation products into effective anthraquinone, and a circulation in the process of producing hydrogen peroxide by anthraquinone method A method for regenerating working fluid and a method for producing hydrogen peroxide. Background technique [0002] Hydrogen peroxide is an ideal green oxidant, widely used in chemical industry, paper making, printing and dyeing and environmental protection and other fields. In recent years, hydrogen peroxide has been widely used in the production of bulk chemicals such as caprolactam and propylene oxide, and its output and consumption have grown rapidly. [0003] The anthraquinone method is the main method for industrial production of hydrogen peroxide, accounting for more than 95% of the total production capaci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/78B01J37/02C01B15/023C07C46/02
CPCB01J23/34B01J23/78B01J37/0201C01B15/023C07C46/02Y02P20/584
Inventor 程义王松林范壮志曾召席宋盼张晓昕宗保宁
Owner ZHEJIANG BALING HENGYI CAPROLACTAM
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