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Multimetal reforming catalyst and preparation and applications thereof

A reforming catalyst and catalyst technology, which can be used in physical/chemical process catalysts, reformed naphtha, chemical instruments and methods, etc. The effect of carbon deposition capacity

Active Publication Date: 2013-10-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the catalyst is a platinum-tin-europium component, only when the europium / platinum atomic ratio is less than 1.0, there is a good conversion rate of hydrocarbons. When the ratio is greater than 1.0, the activity of the catalyst will be greatly reduced

Method used

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  • Multimetal reforming catalyst and preparation and applications thereof
  • Multimetal reforming catalyst and preparation and applications thereof
  • Multimetal reforming catalyst and preparation and applications thereof

Examples

Experimental program
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preparation example Construction

[0041]The preparation of the catalyst provided by the invention can adopt two methods, one is to introduce Sm and Ce by sub-leaching method, and the other is to introduce Sm and Ce by co-impregnation method.

[0042] The preparation method of the catalyst that introduces Sm and Ce by sub-impregnation method includes impregnating the inorganic oxide carrier containing IVA group metal with the solution containing Sm and Ce respectively, introducing Sm and Ce respectively in the carrier, and then using the solution containing VIII The carrier is impregnated with the solution of the group metal compound, and the carrier obtained after each impregnation and introduction of the metal component needs to be dried and calcined. Preferably, the carrier introduced with Sm and Ce is calcined with air containing water vapor, and the content of water in the air is preferably 1 ~8% by mass.

[0043] The preparation method of the catalyst that adopts the co-impregnation method to introduce Sm...

example 1

[0058] Catalysts described in the present invention are prepared.

[0059] (1) Preparation of Sn-containing Al 2 o 3 carrier

[0060] According to the method of CN1150169A, 100g of SB aluminum hydroxide powder (manufactured by Sasol Company) was mixed with an appropriate amount of deionized water, so that the liquid / solid mass ratio was 2.0, and stirred for slurrying. Add 7.5mL of dilute nitric acid with a volume ratio of 1:1, 30g of urea and a predetermined amount of stannous chloride hydrochloric acid solution, so that the Sn content in the hydrochloric acid is 0.3% by mass relative to the dry basis alumina, stir for 1 hour, and add 30g Kerosene and 3g fatty alcohol polyoxyethylene ether are dropped into balls in the oil ammonia column. The wet bulb was solidified in ammonia water for 1 hour, then filtered, rinsed with deionized water for 2 to 3 times, dried at 60°C for 6 hours, dried at 120°C for 10 hours, and calcined at 600°C for 4 hours to obtain the Sn-containing car...

example 2

[0068] Catalyst B is prepared by the method of example 1, the difference is that (3) step prepares the used CeCl of impregnation solution 3 ·7H 2 The amount of O is 0.2658g, and the active component content of the prepared catalyst B is shown in Table 1.

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Abstract

The invention relates to a multimetal reforming catalyst. The multimetal reforming catalyst comprises a high-temperature-resistant inorganic oxide carrier and the following components calculated on the basis of the carrier: 0.01-2.0% by mass of VIII metal, 0.01-5.0% by mass of IVA metal, 0.01-3.0% by mass of Sm, 0.01-3.0% by mass of Ce, and 0.1-5.0% by mass of halogen. The catalyst has good activity stability and high selectivity.

Description

technical field [0001] The invention relates to a multi-metal catalyst with dual functions of acidity and hydrogenation-dehydrogenation and a preparation method thereof. Specifically, it is a platinum-tin-containing multi-metal reforming catalyst and a preparation method thereof. Background technique [0002] In the process of petroleum refining, in order to accelerate the conversion reaction of hydrocarbons, catalysts with both hydrogenation-dehydrogenation and isomerization functions are mainly used to catalyze such reactions, such as catalytic reforming of naphtha. At present, most of the reforming catalysts widely used in industry are bimetallic reforming catalysts, mainly Pt-Re and Pt-Sn catalysts. In bimetallic reforming catalysts, the isomerization function is related to the acidity of the catalyst, and the acidity is closely related to the pore structure and adsorption of high-temperature resistant inorganic oxides. The high-temperature-resistant inorganic oxide is...

Claims

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Application Information

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IPC IPC(8): B01J27/135C10G35/085
Inventor 马爱增蔡迎春潘锦程刘辰杨彦鹏刘建良周怡然
Owner CHINA PETROLEUM & CHEM CORP
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