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Isomerization catalyst composition and isomerization catalyst as well as application thereof and preparation method therefor

A composition and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of unavailable catalysts, low conversion rate and selectivity, and reduced selectivity, and achieve low cost, The method is simple and the effect of improving the conversion rate

Active Publication Date: 2016-04-13
BEIJING ENERGY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the selectivity of the reaction substrate often decreases with the increase of the acidity of the molecular sieve
And even the prior art of US5523510 that combines acid treatment and steam treatment will also cause the conversion rate and selectivity of the reaction to be all low due to the severe dealumination of molecular sieves
Therefore, the steam treatment means and / or acid treatment means conventionally used by those skilled in the art cannot obtain the catalysts with excellent performance expected by researchers.

Method used

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  • Isomerization catalyst composition and isomerization catalyst as well as application thereof and preparation method therefor

Examples

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preparation example Construction

[0058] In the preparation method of the present invention, preferably, the molding is such that the molded object is at least one of spherical, clover-shaped, four-leaf clover-shaped and butterfly-shaped.

[0059] In the present invention, the method of forming, drying and roasting is preferably as follows: placing the isomerization catalyst composition in an extruder for rolling and forming, and then placing the formed material at room temperature for curing such as 4- 10h, then dried overnight at 50-200°C, and calcined at 220-700°C, the time of drying and calcining is not particularly limited. In the examples of the present invention, the calcination time is exemplarily listed as 5 hours. Those skilled in the art should not understand this as a limitation on the technical solution of the present invention.

[0060] Using the isomerization catalyst of the present invention or the isomerization catalyst obtained by the above-mentioned method of the present invention for isome...

Embodiment 1

[0065] This example is used to provide the isomerization catalyst composition of the present invention and to illustrate the preparation method of the isomerization catalyst of the present invention.

[0066] Step 1: obtain modified ferrierite.

[0067] Modification treatment: Take 90g of sodium ferrierite ZSM-23 (purchased from Shanghai Shentan Environmental Protection New Material Co., Ltd., the same below), and add it to 1000mL of a solution containing 32g of ammonium nitrate and 35.4g of ammonium fluorosilicate. Contact treatment at ℃ for 8h, then cooling, filtering, drying at 100℃ for 10h, and calcining at 500℃ for 4h to obtain modified ferrierite 1-A.

[0068] The second step: obtaining the isomerization catalyst composition.

[0069] A mixed solution of 100 g of modified Ferrierite 1-A, 50 g of alumina, 5 g of turnip powder, 8 g of nitric acid and 100 g of water was added into a kneader and stirred until the materials were evenly mixed. The isomerization catalyst comp...

Embodiment 2

[0073] This example is used to provide the isomerization catalyst composition of the present invention and to illustrate the preparation method of the isomerization catalyst of the present invention.

[0074] Step 1: obtain modified ferrierite.

[0075] Modification treatment: Take 90g of sodium ferrierite ZSM-35 (purchased from Dalian Ketelli Chemical Co., Ltd., the same below), add it to 1000mL solution containing 55.4g ammonium nitrate and 72g ammonium fluorosilicate, at 95°C After contacting for 7 hours, cooling, filtering, drying at 120°C for 8 hours, and calcining at 400°C for 6 hours, the modified ferrierite 2-A was obtained.

[0076] The second step: obtaining the isomerization catalyst composition.

[0077] A mixed solution of 100 g of modified ferrierite 2-A, 20 g of silicon oxide, 10 g of methylcellulose, 4 g of nitric acid and 100 g of water was added into a kneader and stirred until the materials were mixed evenly. The isomerization catalyst composition 2-B was ...

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Abstract

The invention discloses an isomerization catalyst composition which comprises modified ferrierite, a binding agent, an extrusion aid and a first acid, wherein the modified ferrierite is obtained by performing first contact on the to-be-modified ferrierite and an ammonium-containing compound under a solution condition, and the ammonium-containing compound comprises ammonium nitrate and ammonium fluorosilicate. The invention further discloses an isomerization catalyst obtained from the isomerization catalyst composition and a preparation method for the isomerization catalyst. The method comprises: sequentially moulding, drying and roasting the isomerization catalyst composition. The isomerization catalyst composition disclosed by the invention can be used for preparing the isomerization catalyst, and the obtained isomerization catalyst is used for isomerization reaction, particularly isomerization reaction of olefins, the conversion rate of a reaction primer and the selectivity of a product can be remarkably improved.

Description

technical field [0001] The invention relates to an isomerization catalyst composition, an isomerization catalyst, application and preparation method thereof. Background technique [0002] In recent years, due to the promulgation of various environmental protection policies and the promotion and use of unleaded gasoline, the demand for high-octane additives such as MTBE and ETBE has grown rapidly around the world. The dramatic increase. Coupled with the development and utilization of isobutene downstream products, the isobutene produced by traditional petroleum catalytic cracking is far from meeting the current demand. Therefore, expanding the source of isobutene and increasing the output of isobutene have become the top priority of petrochemical development. [0003] At present, methods for producing isobutene, such as sulfuric acid extraction, resin dehydration, tert-butanol dehydration, and isobutane dehydrogenation, have not been widely promoted due to environmental poll...

Claims

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Application Information

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IPC IPC(8): B01J29/65C10G45/64
Inventor 曲良龙吴金存石秀峰孙作霖
Owner BEIJING ENERGY ENG TECH
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