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Methods of preparing and forming active metal-supported catalysts and precursors

A technology of supported catalysts and porous catalysts, which is applied in molecular sieve catalysts, chemical instruments and methods, catalyst activation/preparation, etc., and can solve the problems of reducing catalyst activity and reducing the effective surface area of ​​catalysts, etc.

Active Publication Date: 2017-05-03
IGTL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such aggregation or sintering reduces the effective surface area of ​​the catalyst available for catalytic reactions, which reduces catalyst activity

Method used

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  • Methods of preparing and forming active metal-supported catalysts and precursors
  • Methods of preparing and forming active metal-supported catalysts and precursors
  • Methods of preparing and forming active metal-supported catalysts and precursors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0179] Example 1 - Catalyst A

[0180] The following steps were performed to prepare Catalyst A (Fe / Ce / Cu / KY).

[0181] Preparation of Na + Y-zeolite in cation exchange form. However, implementation with K + The ion exchange performed, the reason is that for Fe-based HTFT catalysts, K + is better than Na + Good cocatalyst.

[0182] Ion exchange of NaY was performed by adding 12 g of NaY to 600 ml of 0.5 M K in double deionized water 2 CO 3 carried out in solution. K 2 CO 3 The amount in solution expresses K + 6-fold excess relative to the amount of cation exchange sites of the zeolite. The resulting suspension was stirred and heated at 80°C with reflux cooling for a minimum of 4 hours. The resulting ion-exchanged zeolite was then filtered and washed with double deionized water.

[0183] This process was repeated three times in order to obtain complete ion exchange and to provide excess cations beyond the ion exchange capacity of the framework and to dry before u...

Embodiment 2

[0207] Example 2 - Catalyst E

[0208] As described above, the catalysts of the present invention are also suitable components for the preparation of bifunctional catalysts. In this example, Catalyst E was prepared by combining 5 g of Catalyst A with 5 g of ZSM-5 zeolite extrudate (80% H-ZSM-5 zeolite, 20% alumina binder) that The zeolite extrudate was placed over Catalyst A in the catalyst basket of the STIRR reactor. This arrangement is equivalent to a bifunctional catalyst containing Catalyst A and H-ZSM-5 zeolite.

[0209] Catalyst E was tested at different weight hourly space velocities in the hydrogenation of carbon monoxide. The test results are shown in Figure 8 and Table C summarize the test results at the highest weight hourly space velocity used.

[0210] exist Figure 8 , Catalyst E is at steady state at 7800h -1 exhibited 74.3% carbon monoxide conversion at a GHSV of 43.4% in the product and a C5+ selectivity of 35.9%. Methane selectivity was 19.3%.

[...

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Abstract

The present invention relates to a method for preparing a supported catalyst, said method comprising the steps of: (i) providing a porous catalyst support comprising a framework having an internal pore structure including one or more pores, said internal pore structure including a precipitating agent; (ii) The catalyst support is brought into contact with a solution or colloidal suspension containing the catalytically active metal, such that upon contact with the precipitating agent, the particles containing the catalytically active metal are precipitated in the internal pore structure of the framework of the catalyst support. The present invention also relates to a supported catalyst prepared according to the above method, and the use of the catalyst in catalyzing chemical reactions, for example, in the Fischer-Tropsch synthesis of hydrocarbons.

Description

technical field [0001] The present invention relates to methods of preparing and forming precipitated active metal-supported catalysts and precursors, and particularly, but not exclusively, to catalysts useful in carbon oxide hydrogenation processes. In particular, the present invention relates to a process for the preparation of catalysts comprising a functionalized porous support framework (as found, for example, in zeolites) comprising particles, nanoparticles or clusters containing encapsulated catalytically active metals. ), which may be partially or fully reduced. Certain aspects of the invention relate to methods of use of the catalysts so prepared, and find particular application in the synthesis and / or conversion of different classes of hydrocarbons. Background technique [0002] Heterogeneous catalysts are used in many chemical and petrochemical processes. In many cases, the viability of a process depends on the activity of the catalyst and its successful combina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/03B01J37/02B01J29/06B01J29/064B01J29/068B01J29/072B01J29/076B01J29/12B01J29/14B01J29/16B01J29/72B01J29/74B01J29/76B01J29/78B01J37/18
CPCB01J29/061B01J29/064B01J29/068B01J29/072B01J29/076B01J29/126B01J29/146B01J29/166B01J29/40B01J29/7215B01J29/7276B01J29/7415B01J29/7476B01J29/7615B01J29/7676B01J29/7815B01J29/7876B01J29/80B01J37/0201B01J37/0205B01J37/0207B01J37/0211B01J37/031B01J37/033B01J37/035B01J37/18C10G2/331C10G2/332C10G2/333C10G2/334B01J2523/13B01J2523/17B01J2523/3712B01J2523/31B01J2523/842B01J2523/41B01J2229/186B01J2229/42B01J2229/38B01J35/19B01J35/23B01J37/03
Inventor 理查德·海曼
Owner IGTL TECH
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