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Catalyst carrier and supported catalyst, preparation method and application thereof, and method for producing synthesis gas by dry reforming of methane

A supported catalyst and catalyst carrier technology, applied in the direction of catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problem of low catalyst activity, achieve simple preparation methods, improve anti-coking performance, and large specific surface area Effect

Active Publication Date: 2019-03-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if simply Al 2 o 3 When NiO is loaded on the carrier, because NiO is easy to combine with Al at high temperature 2 o 3 Reaction to form NiAl 2 o 4 It is difficult to be reduced and activated, resulting in low catalyst activity

Method used

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  • Catalyst carrier and supported catalyst, preparation method and application thereof, and method for producing synthesis gas by dry reforming of methane
  • Catalyst carrier and supported catalyst, preparation method and application thereof, and method for producing synthesis gas by dry reforming of methane
  • Catalyst carrier and supported catalyst, preparation method and application thereof, and method for producing synthesis gas by dry reforming of methane

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preparation example Construction

[0020] The invention provides a method for preparing a catalyst carrier, which is characterized in that the preparation method comprises uniformly mixing the carrier precursor and an auxiliary agent in the presence of water, followed by molding, drying and roasting in sequence, and the auxiliary agent includes a modification auxiliary agent or its precursor salt, as well as peptizer and pore former.

[0021] The preparation method of the catalyst support provided by the present invention takes the commercially available carrier precursor such as pseudo-boehmite as raw material, and directly mixes the support modification auxiliary agent into a peptizer such as dilute nitric acid solution, and simultaneously adds pore-forming agent, auxiliary Extrusion agent, etc., mixed, extruded, dried and then roasted. That is, adding modification additives at the carrier precursor such as pseudo-boehmite, instead of the traditional modification method is to modify the surface of the alumina...

Embodiment approach

[0025]According to a kind of preferred embodiment of the present invention, the preparation method of described catalyst carrier comprises: (1) preparation dilute nitric acid solution; (2) directly join in the above-mentioned dilute nitric acid solution with the modified auxiliary agent precursor salt of specified amount; 3) Weighing a certain amount of pore-forming agent and extrusion aid and mixing with pseudo-boehmite raw powder; (4) mixing and stirring the above-mentioned dilute nitric acid solution and pseudo-boehmite; (5) extrusion molding; (6) ) drying and roasting.

[0026] According to the present invention, the molding is preferably extrusion molding. According to the shape of the orifice plate, it can be extruded into a cylindrical shape, a clover, a four-leaf clover, a dish, a Raschig ring, etc., preferably a four-leaf clover or a Raschig ring.

[0027] According to the preparation method of the catalyst carrier of the present invention, the drying temperature can ...

Embodiment 1

[0071] (1) Preparation of catalyst carrier

[0072] Take by weighing 60g deionized water, add 1ml concentrated nitric acid to be mixed with dilute nitric acid solution, then weigh 2.56g of Mg(NO 3 ) 2 ·6H 2 O is dissolved in the prepared dilute nitric acid solution; weigh 100g of pseudo-boehmite, add 2g of starch and 1.5g of turnip powder and mix evenly; pour the above-mentioned dilute nitric acid solution into the pseudo-boehmite and stir evenly, Extrude into a four-leaf clover shape on a strip machine. The wet strips were dried at 120°C for 8 hours, and then calcined at 700°C for 3 hours. The resulting carrier is denoted as Al 2 o 3 -1, whose properties are listed in Table 1.

[0073] (2) Preparation of catalyst

[0074] Weigh 3.2g of Ni(NO 3 ) 2 ·6H 2 O and 0.355g of P123 were dissolved in 12g of deionized water and stirred to dissolve. The impregnating solution was impregnated in 10g of the above-mentioned carrier, and after standing for 2 hours, it was placed on...

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Abstract

The invention relates to a preparation method of a catalyst carrier, a preparation method of a supported catalyst, the supported catalyst, a use of the supported catalyst and a method for producing synthetic gas through dry reforming of methane through the supported catalyst. According to the preparation method of the catalyst carrier, a sale carrier precursor such as pseudo-boehmite as a raw material is used, a carrier modification assistant is directly added into a glue solvent such as a dilute nitric acid solution, simultaneously, a pore forming agent and an extrusion aid are added into the solution, the mixture is mixed and is extruded to form strips and the strips are dried and roasted. The carrier is roasted once so that the carrier has excellent texture properties, has a large specific surface area and is conducive to active metal uniform dispersion. The carrier carries an active metal Ni to form the supported catalyst and the supported catalyst is used for a methane dry reforming catalytic reaction. Compared with the same type of the existing catalyst, the supported catalyst has higher catalytic activity and better resistance to carbon deposition.

Description

technical field [0001] The invention relates to a preparation method of a catalyst carrier, a preparation method of a loaded catalyst, a loaded catalyst prepared by the method, an application thereof, and a method for producing synthesis gas by methane dry reforming using the loaded catalyst. Background technique [0002] In recent years, due to the influence of global warming caused by the "greenhouse effect", global climate anomalies occur frequently, bringing endless disasters to human beings. People have gradually realized the importance of environmental protection amid the alarm bells of global warming. Under the active promotion of governments around the world, a series of CO 2 Emission reduction measures have been formulated and gradually implemented. On the premise of not affecting the status quo of industrial production, actively develop CO 2 The high-value utilization technology is the current CO 2 effective way to reduce emissions. Among them, using methane a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J21/10B01J23/10B01J23/02B01J21/14B01J23/755B01J23/83B01J23/78B01J35/10B01J37/02C01B3/40
CPCY02P20/52
Inventor 张荣俊夏国富李明丰吴玉晋超聂红李大东
Owner CHINA PETROLEUM & CHEM CORP
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