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A kind of multi-metal reforming catalyst and its preparation and application

A reforming catalyst, catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, reformed naphtha, etc., can solve the problem of catalyst activity decrease, etc., and achieve the improvement of selectivity , high aromatics yield, the effect of improving selectivity

Active Publication Date: 2016-08-24
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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  • A kind of multi-metal reforming catalyst and its preparation and application
  • A kind of multi-metal reforming catalyst and its preparation and application
  • A kind of multi-metal reforming catalyst and its preparation and application

Examples

Experimental program
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Effect test

preparation example Construction

[0037] The preparation of the catalyst provided by the invention can adopt two methods, one is to introduce Sm and Y by sub-leaching method, and the other is to introduce Sm and Y by co-impregnation method.

[0038] The preparation method of the catalyst that introduces Sm and Y by sub-impregnation method includes impregnating the high-temperature resistant inorganic oxide support containing IVA group metals with solutions containing Sm and Y, respectively, introducing Sm and Y into the support, and then using a solution containing The solution of Group VIII metal compound impregnates the carrier, and the carrier obtained after impregnating and introducing the metal component needs to be dried and calcined each time. Preferably, the carrier introduced with Sm and Y is calcined with air containing water vapor, and the content of water in the air is preferably 1-8% by mass.

[0039] The preparation method of the catalyst that introduces Sm and Y by co-impregnation method include...

example 1

[0056] Preparation of the catalyst of the present invention.

[0057] (1) Preparation of Sn-containing Al 2 o 3 carrier

[0058] According to the method of CN1150169A, mix 100g of SB aluminum hydroxide powder (manufactured by Sasol Company) and an appropriate amount of deionized water so that the liquid / solid mass ratio is 2.0, and stir to make slurry. Add 7.5 mL of dilute nitric acid with a volume ratio of 1:1, 30 g 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 30 g 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 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 Sn-containing carrier a.

[0059] (2) ...

example 2

[0066] Catalyst B is prepared by the method of example 1, except that (3) step prepares the used SmCl of impregnation solution 3 ·6H 2 O is 2.426g, and the active component content of the prepared catalyst B is shown in Table 1.

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Abstract

A multi-metal reforming catalyst, comprising 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 group VIII metals, 0.01-5.0% by mass of group IVA metals, Y0.01 ~3.0 mass%, Sm 0.01~3.0 mass%, halogen 0.1~5.0 mass%. The catalyst is used for catalytic reforming reaction of naphtha and has good activity stability and high selectivity.

Description

technical field [0001] The invention relates to a hydrocarbon conversion catalyst, its preparation and application, in particular to a naphtha reforming catalyst, its preparation method and application. 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 used as the carrier of the Group VIII metal, and the Group VIII metal provides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/63C10G35/085
Inventor 蔡迎春马爱增潘锦程
Owner CHINA PETROLEUM & CHEM CORP
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