Catalyst carrier, supported catalyst, preparation methods and applications of catalyst carrier and supported catalyst, and method for preparing hydrogen by methane steam reforming

A supported catalyst and catalyst carrier technology, which is applied in the direction of catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problem of poor carbon deposition resistance of the catalyst, achieve high catalyst activity, inhibit the formation of carbon deposition, good stability effect

Active Publication Date: 2019-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defect of poor anti-coking performance of the catalyst under low water-to-carbon ratio operating conditions in the hydrogen production process of methane steam reforming in the prior art, and to provide a catalyst carrier and its preparation method, a Supported catalyst and preparation method thereof, application of said support and supported catalyst in methane steam reforming reaction, and method for hydrogen production by methane steam reforming

Method used

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  • Catalyst carrier, supported catalyst, preparation methods and applications of catalyst carrier and supported catalyst, and method for preparing hydrogen by methane steam reforming
  • Catalyst carrier, supported catalyst, preparation methods and applications of catalyst carrier and supported catalyst, and method for preparing hydrogen by methane steam reforming
  • Catalyst carrier, supported catalyst, preparation methods and applications of catalyst carrier and supported catalyst, and method for preparing hydrogen by methane steam reforming

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Embodiment approach

[0033] According to a preferred embodiment of the present invention, in the La modified alumina, La 2 o 3 The content is 0.1-6% by weight, preferably 0.5-3% by weight, more preferably 1.5-2.5% by weight.

[0034] The carrier that satisfies the aforementioned requirements of the present invention can realize the object of the present invention, and the present invention has no special requirements for its preparation method. For the present invention, the carrier described in the present invention is preferably prepared according to the following steps: the aluminum oxide containing La modified, CaCO 3 The mixture of , MgO, binder and pore-forming agent is ball-milled, then shaped and fired.

[0035] In the present invention, La-modified alumina, CaCO 3 , MgO, a binder and a pore-forming agent are ball-milled together, and then calcined to obtain a carrier with pores larger than 100 nm, and the pore volume of the pores larger than 100 nm accounts for 75-95% of the total pore...

Embodiment 1

[0097] (1) Preparation of La-modified alumina

[0098] 11.4g of La(NO 3 ) 2 9H 2 O was dissolved in 210mL of deionized water and stirred to dissolve, and 300g of pseudoboehmite was impregnated with it as the impregnating solution. After standing for 2 hours, the water was evaporated to dryness, and then calcined at 1200°C for 2 hours to obtain La-Al 2 o 3 -1. Among them, the content of La is 2% by weight, and the specific surface area is 71.4m 2 / g, the pore volume is 0.212cm 3 / g.

[0099] (2) Preparation of catalyst carrier

[0100] Weigh 130g of La-Al 2 o 3 -1, 30g of MgO, 18g of CaCO 3 , 1.05g magnesium stearate, 0.4g charcoal powder and 6mL carboxymethyl cellulose were mixed and ball milled for 20 hours to 100 mesh-150 mesh. Put the compressed pellet (diameter 1cm, thickness 3mm) into a muffle furnace and bake at 1200°C for 5 hours at a high temperature to obtain a catalyst carrier. The obtained support is denoted as LAMC-1, wherein the content of La modified ...

Embodiment 2

[0115] (1) Preparation of La-modified alumina

[0116] 8.4g of La(NO 3 ) 2 9H 2 O was dissolved in 210mL of deionized water and stirred to dissolve, and 300g of pseudo-boehmite was impregnated with it as the impregnating solution. After standing for 2 hours, the water was evaporated to dryness, and then calcined at 1300°C for 1 hour to obtain La-Al 2 o 3 -2. Among them, the content of La is 1.5% by weight, and the specific surface area is 64.5m 2 / g, the pore volume is 0.203cm 3 / g.

[0117] (2) Preparation of catalyst carrier

[0118] Weigh 120g of La-Al 2 o 3 -2, 28g of MgO, 22g of CaCO 3 , 1.05g magnesium stearate, 0.4g charcoal powder and 6mL carboxymethyl cellulose were mixed and ball-milled for 30 hours to below 100 mesh-150 mesh, and then poured into a mold for tableting after mixing and ball-milling evenly. The tablet molding pressure was 15MPa, and then Then put the compressed pellet (diameter 1cm, thickness 3mm) into a muffle furnace and bake at 1300°C for...

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Abstract

The invention relates to the field of catalyst preparation, and discloses a catalyst carrier, a supported catalyst, preparation methods and applications of the catalyst carrier and the supported catalyst, and a method for preparing hydrogen by methane steam reforming. The carrier comprises La modified aluminum oxide, CaO and MgO, the carrier has pores with pore sizes of larger than 100 nm, and a volume of pores with pore sizes of larger than 100 nm is 75-95% of a total pore volume of the carrier. The carrier provided by the invention has high strength and high hydrothermal stability, and whenthe carrier provided by the invention is adopted to prepare a methane steam reforming catalyst, a dispersion degree of active metals, activity of the catalyst, carbon deposition resistance and structural stability can be significantly improved.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a catalyst carrier, a method for preparing a catalyst carrier, a catalyst carrier prepared by the method, a supported catalyst, a method for preparing a supported catalyst, and a catalyst carrier prepared by the method. The obtained supported catalyst, the application of the carrier and the supported catalyst in methane steam reforming reaction and a method for producing hydrogen by methane steam reforming. Background technique [0002] In the chemical industry, the largest amount of hydrogen is used in synthetic ammonia and petroleum refining. In other fields, such as metallurgy, electronics, glass, medicine, food, aerospace, energy, etc., hydrogen is needed. In recent years, with the development of hydroreforming and hydrocracking in the refining process, the demand for hydrogen is increasing, and the demand for hydrogen in petrochemical industries such as synthetic ammonia,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J23/83B01J35/10B01J37/02B01J37/08C01B3/40
CPCY02P20/52
Inventor 张荣俊夏国富李明丰吴玉晋超孙霞侯朝鹏阎振楠
Owner CHINA PETROLEUM & CHEM CORP
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