Preparation method and application method of non-noble metal reforming catalyst

A reforming catalyst, non-precious metal technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high price and poor adaptability of reforming raw materials, and achieve simple methods, low cracking and disproportionation. Activity, the effect of improving dispersibility

Active Publication Date: 2014-03-19
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Application Information

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Problems solved by technology

[0008] The invention provides a preparation method and application method of a non-precious metal reforming catalyst to solve the problem that the catalysts (such as platinum-based reforming catalysts) used in the catalytic reforming of naphtha in the prior art are expensive and have poor adaptability to reforming raw materials. poor problem

Method used

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  • Preparation method and application method of non-noble metal reforming catalyst
  • Preparation method and application method of non-noble metal reforming catalyst
  • Preparation method and application method of non-noble metal reforming catalyst

Examples

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Embodiment 1

[0028] Ni 2 P / γ-Al 2 o 3 -The preparation method of SAPO-11 catalyst, comprises following process:

[0029] (1) Preparation of composite carrier. Use 49.0g of aluminum hydroxide dry rubber powder, 21.0g of SB powder and 30.0g of SAPO-11, add 2.0g of kale powder and mix evenly, then add 80.5g of deionized water and 4.5g of concentrated nitric acid (65-68m%) After kneading about three times, extrude on the F-26(Ⅲ) twin-screw extruder, the finished product is air-dried, dried at 120°C for 6-12h after molding, and calcined at 550°C for 4h to obtain the composite carrier. (SAPO / γ-Al 2 o 3 =3 / 7, mass ratio), the composite carrier is counted as NS-30.

[0030] (2) Preparation of catalyst precursor. Immerse 22.2g of nickel hypophosphite hexahydrate into 22.5g of deionized water at 60~80°C, carry out constant temperature supersaturated impregnation for 1h, then suction filter, wash with deionized water three times, and dry at 60°C for 24h in vacuum to obtain the catalyst prec...

Embodiment 2

[0033] The preparation process of the catalyst is the same as in Example 1, except that the mass content of the prepared catalyst carrier SAPO-11 molecular sieve is 20%, and the composite carrier is counted as NS-20.

Embodiment 3

[0035] The preparation process of the catalyst is the same as in Example 1, except that the mass content of the prepared catalyst carrier SAPO-11 molecular sieve is 40%, and the composite carrier is NS-40.

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Abstract

A preparation method and an application method of a non-noble metal reforming catalyst. The catalyst comprises a Ni2P active component and a composite carrier. The composite carrier comprises gama-Al2O3 and SAPO-11. The preparation method comprises the following steps: firstly, adding sesbania powder into raw materials of aluminium hydroxide dry gel powder, pseudo-boehmite and SAPO-11, then adding nitric acid aqueous solution, performing kneading, strip extrusion, air drying, drying and roasting to prepare a composite carrier of gama-Al2O3-SAPO-11; secondly, preparing a nickel hypophosphite impregnation liquid at 60-80 DEG C, controlling the molar ratio of phosphorus to nickel, impregnating the composite carrier by constant temperature supersaturation impregnation, performing air drying and vacuum drying to obtain a catalyst precursor; finally, putting the catalyst precursor in a tubular furnace, and roasting in N2 to prepare the Ni2P/gama-Al2O3-SAPO-11 catalyst. Compared with the prior art, the preparation method is simple in process, low in preparation temperature, and mild in reaction conditions; the prepared catalyst is high in dispersity, can be used in naphtha reforming reaction, has high aromatic hydrocarbon yield and activity stability, and is low in price.

Description

technical field [0001] The invention relates to a preparation method and application of a naphtha reforming catalyst, in particular to a preparation method and application method of a non-precious metal nickel phosphide reforming catalyst containing molecular sieves. Background technique [0002] The high value-added utilization technology of naphtha is the key technology in the petroleum refining process. The bulk naphtha in existing refineries is mainly processed through catalytic reforming and steam cracking processes. The catalytic reforming process of naphtha is an important means of producing high-octane gasoline and BTX. V standard clean gasoline is an important blending component, and the BTX produced by catalytic reforming units accounts for about 70% of the world's BTX production. Naphtha steam cracking is an important means of producing ethylene and propylene, and the cost of raw materials accounts for 70-75% of the total cost of olefins. Due to the impact of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85C10G35/095
Inventor 柳云骐彭婷婷贾蓉蓉潘原柴永明刘晨光
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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