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Methods of preparation and forming supported active metal catalysts and precursors

A technology of supported catalysts and porous catalysts, which is used in the field of catalyst preparation, synthesis and/or conversion of hydrocarbons, and carbon oxide hydrogenation processes, and can solve problems such as reducing the effective surface area of ​​the catalyst and reducing the activity of the catalyst

Inactive Publication Date: 2017-07-21
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 preparation and forming supported active metal catalysts and precursors
  • Methods of preparation and forming supported active metal catalysts and precursors
  • Methods of preparation and forming supported active metal catalysts and precursors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0183] Example 1 - Catalyst A

[0184] The following steps were performed to prepare Catalyst A (Fe / Ce / Cu / KY).

[0185] 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.

[0186] 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.

[0187] 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

[0209] Example 2 - Catalyst E

[0210] 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.

[0211] 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.

[0212] 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 invention relates to a method of preparing a supported catalyst, which method comprises the steps of; (i) providing a porous catalyst support comprising a framework having an internal pore structure comprising one or more pores which internal pore structure comprises a precipitant; (ii) contacting the catalyst support with a solution or colloidal suspension comprising a catalytically active metal such that, on contact with the precipitant, particles comprising the catalytically active metal are precipitated within the internal pore structure of the framework of the catalyst support. The invention also relates to supported catalysts made according to the above method, and to use of the catalysts in catalysing chemical reactions, for example in the Fischer Tropsch synthesis of hydrocarbons.

Description

[0001] This application is a divisional application of the application number 201280051673.9, the filing date is October 22, 2012, and the title of the invention is "Methods for preparing and forming catalysts and precursors supporting active metals". technical field [0002] 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 di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/068B01J29/72B01J29/78B01J29/072B01J29/14B01J29/064B01J29/16B01J29/076B01J29/40B01J29/74B01J29/76B01J29/80B01J29/06B01J29/12B01J37/02C10G2/00B01J35/00B01J37/03B01J37/18
CPCB01J29/061B01J29/064B01J29/068B01J29/072B01J29/076B01J29/126B01J29/146B01J29/166B01J29/40B01J29/7215B01J29/7276B01J29/7415B01J29/7476B01J29/7615B01J29/7676B01J29/7815B01J29/7876B01J29/80B01J37/0201B01J37/0205B01J37/0207B01J37/0211B01J37/031B01J37/033B01J37/035B01J37/18C10G2/331C10G2/332C10G2/333C10G2/334B01J2523/13B01J2523/17B01J2523/3712B01J2523/31B01J2523/842B01J2523/41B01J2229/186B01J2229/42B01J2229/38B01J35/19B01J35/45B01J37/03
Inventor 理查德·海曼
Owner IGTL TECH
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