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A supported catalyst, its preparation method and application, and its catalytic cycloalkane hydrogenolysis ring-opening method

A supported catalyst and catalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve high hydrogenolysis ring-opening activity and low cracking rate

Active Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] But, the ring-opening activity and selectivity of cycloalkane hydrogenolysis of the above-mentioned disclosed catalysts still have great room for improvement and improvement

Method used

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  • A supported catalyst, its preparation method and application, and its catalytic cycloalkane hydrogenolysis ring-opening method
  • A supported catalyst, its preparation method and application, and its catalytic cycloalkane hydrogenolysis ring-opening method
  • A supported catalyst, its preparation method and application, and its catalytic cycloalkane hydrogenolysis ring-opening method

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preparation example Construction

[0033] The present invention also provides a preparation method of a supported catalyst, the method comprising the steps of:

[0034] 1) impregnating the carrier with a solution containing a compound of the first metal component and a compound of the second metal component;

[0035] 2) reducing and activating the impregnated carrier obtained in step 1);

[0036] 3) impregnating the product after step 2) reduction activation with a solution of a compound containing the second metal active component in a reducing or inert atmosphere;

[0037] 4) impregnating the support with a solution of a compound containing an alkali metal component;

[0038] Wherein, the weight ratio of the compound of the first metal active component and the compound of the second metal active component in terms of metal elements in step 1) is 10-600: 1, and the compound of the second metal active component is in step 1) and Step 3) The weight ratio in terms of metal elements is 0.01-0.8:1, the first meta...

Embodiment 1

[0074] This example is used to illustrate the catalyst provided by the present invention and its preparation method.

[0075] According to the required metal salt content of the equal volume impregnation method, 32.4 milliliters of nickel nitrate and iridium chloride impregnation solution containing 167 grams per liter of nickel and 2.22 grams per liter of iridium were prepared. Decant the impregnation solution to 36 g SiO 2 -Al 2 o 3 Carrier (prepared according to Example 2 of CN201110139331.X), after stirring evenly at 25°C and standing for 4 hours, drying at 120°C, roasting at 350°C for 4 hours, hydrogen reduction at 350°C for 4 hours, the hydrogen pressure is 0.1 MPa . Cool down to room temperature after reduction, and add 48.6 ml of mixed aqueous solution of iridium chloride and potassium chloride containing 2.96 g / L iridium and 2.96 g / L potassium under a hydrogen atmosphere, let it stand for 1 hour, and then dry it with hydrogen gas . Then by O 2 / N 2 The mixed ga...

Embodiment 2

[0085] This example is used to illustrate the catalyst provided by the present invention and its preparation method.

[0086] According to the required metal salt content of the equal volume impregnation method, 32.4 milliliters of cobalt nitrate and dichlorotetraammine platinum impregnating solution containing 167 grams per liter of cobalt and 1.11 grams per liter of platinum were prepared. The impregnating liquid is decanted to 36 grams of hydrogen-form Y-Beta composite molecular sieve-alumina carriers (prepared according to the carrier D1 of Example 1 of CN101992120A), stirred evenly at 25° C., left to stand for 4 hours, and dried at 110° C. Calcination at 500°C for 4 hours, hydrogen reduction at 350°C for 4 hours, hydrogen pressure at 0.1 MPa. After reduction, it was lowered to room temperature, and 48.6 milliliters of a mixed aqueous solution of dichlorotetraammineplatinum and sodium chloride containing 1.85 g / L of platinum and 1.48 g / L of sodium were added under a hydrog...

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Abstract

The invention discloses a supported catalyst which includes a carrier, and a hydrogenation active bis-metal component and an alkali metal component which are supported on the carrier. The weight ratio of the bis-metal component, on the basis of metal elements, satisfies (M2 / M1)XPS / (M2 / M1)XRF = 2.0-20.0, wherein the (M2 / M1)XPS is the weight ratio, on the basis of metal elements, of a second metal component to a first metal component in the catalyst according to representation by X-ray photoelectron spectroscopy, and the (M2 / M1)XRF is the weight ratio, on the basis of metal elements, of the second metal component to the first metal component in the catalyst according to representation by X-ray fluorescence spectrometry. The first metal component is Co and / or Ni, and the second metal component is a transition metal element of the VIII group in the fifth and / or the sixth period. The invention also provides a preparation method of the catalyst and a method of catalyzing hydrogenolysis ring opening of cycloalkanes. The supported catalyst, compared with the catalysts in the same metal contents in the prior art, is higher in activity and selectivity when being used for catalyzing the hydrogenolysis ring opening of the cycloalkanes.

Description

technical field [0001] The invention relates to a supported catalyst, its preparation method and application, and a method for using the catalyst to catalyze cycloalkane hydrogenolysis and ring opening. Background technique [0002] With the development of the world economy, the demand for diesel is increasing day by day. It is impossible to meet this demand by straight-run diesel alone, which requires the transfer of secondary processed diesel, such as catalytic cracking diesel and coker diesel. However, secondary processed diesel contains a large amount of sulfur, nitrogen and aromatics. At present, sulfur and nitrogen can be removed by traditional sulfide catalysts. The technical difficulty is the conversion of aromatics. The high aromatics content in diesel will not only reduce the quality of the oil, but also increase the emission of particulates in the exhaust gas of diesel combustion. Generally, the cetane number of normal or short side chain alkanes is the highest,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J29/76C10G45/62C10G45/64
Inventor 郑仁垟李明丰夏国富王振李会峰辛靖张润强褚阳刘锋
Owner CHINA PETROLEUM & CHEM CORP
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