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Nickel/zirconia catalyst and its preparation method and method for preparing synthesis gas

A catalyst and nickel salt technology, applied in the field of autothermal reforming of methane to prepare synthesis gas, can solve the problems of high cost, uneven dispersion of nickel components, complicated preparation process of nickel-based catalyst, etc., and achieve reduced preparation cost and excellent catalytic performance. , good catalytic activity and stability

Active Publication Date: 2017-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a Ni / ZrO 2 Catalyst and preparation method thereof and a kind of method for preparing synthesis gas by autothermal reforming of methane, Ni / ZrO of the present invention 2 The preparation method of the catalyst has simple process, easy operation, low cost, highly dispersed nickel components, and the prepared catalyst has excellent catalytic activity and stability

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  • Nickel/zirconia catalyst and its preparation method and method for preparing synthesis gas
  • Nickel/zirconia catalyst and its preparation method and method for preparing synthesis gas
  • Nickel/zirconia catalyst and its preparation method and method for preparing synthesis gas

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preparation example Construction

[0023] In a first aspect, the present invention provides a Ni / ZrO 2 The preparation method of catalyst, this method comprises the following steps:

[0024](1) prepare zirconium salt microemulsion, nickel salt microemulsion and alkaline microemulsion respectively;

[0025] (2) In the presence of ultrasonic waves, zirconium salt microemulsion, nickel salt microemulsion and alkaline microemulsion are mixed;

[0026] (3) The system obtained by mixing step (2) is subjected to solid-liquid separation to obtain a solid product, and the solid product is cleaned, dried and roasted to obtain Ni / ZrO 2 catalyst.

[0027] Ni / ZrO of the present invention 2 In the preparation method of catalyst, in step (1), the method for preparing zirconium salt microemulsion, nickel salt microemulsion and alkaline microemulsion is not particularly limited, as long as zirconium salt microemulsion, nickel salt microemulsion and alkali can be prepared The method of preparing zirconium salt microemulsion,...

Embodiment 1

[0051] This embodiment is used to illustrate Ni / ZrO of the present invention 2 Catalyst and method for its preparation.

[0052] 80g of cetyltrimethylammonium bromide, 640g of n-hexane and 200g of n-butanol were mixed to prepare 672ml of microemulsion mixture and evenly divided into three parts. Add 70ml of 1.8mol / L zirconium oxychloride aqueous solution to the first microemulsion mixture to form 294ml zirconium salt microemulsion; add 60ml of 0.5mol / L nickel nitrate aqueous solution to the second microemulsion mixture , Form 284ml nickel salt microemulsion; Add the 1.0mol / L ammonia solution of 180ml in the 3rd part microemulsion mixed solution, form 404ml ammonia water microemulsion.

[0053]With the assistance of ultrasonic waves with a power of 200W, the temperature of the system was maintained at 50°C, and under the condition of continuous stirring at 600rpm, 294ml of zirconium salt microemulsion and 284ml of nickel salt microemulsion were simultaneously added dropwise to...

Embodiment 2

[0056] This embodiment is used to illustrate Ni / ZrO of the present invention 2 Catalyst and method for its preparation.

[0057] 80g of octadecyltrimethylammonium bromide, 320g of cyclohexane and 320g of n-hexanol were mixed to prepare 510ml of microemulsion mixture and evenly divided into three parts. Add the 0.6mol / L zirconium nitrate aqueous solution of 94ml in the first part of microemulsion mixed solution, form 264ml zirconium salt microemulsion; Add the 0.2mol / L nickel chloride aqueous solution of 113ml in the second part of microemulsion mixed solution, Form 283ml of nickel salt microemulsion; Add 53ml of 2.0mol / L ammonia solution to the third part of microemulsion mixture to form 223ml of ammonia water microemulsion.

[0058] With the assistance of ultrasonic waves with a power of 150W, the temperature of the system was maintained at 80°C, and under the condition of continuous stirring at 700rpm, 264ml of zirconium salt microemulsion and 283ml of nickel salt microemul...

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Abstract

The invention discloses a method for preparing a Ni / ZrO2 catalyst. The method comprises the following steps: (1) preparing zirconium salt microemulsion, nickel salt microemulsion and alkaline microemulsion respectively; salt microemulsion, nickel salt microemulsion and alkaline microemulsion are mixed; (3) the system obtained by mixing step (2) is subjected to solid-liquid separation to obtain a solid product, and the solid product is cleaned, dried and roasted to obtain Ni / ZrO2 catalyst. The invention also provides the Ni / ZrO2 catalyst prepared by the method and a method for preparing synthesis gas by autothermal reforming of methane. The preparation method of the Ni / ZrO2 catalyst of the invention has simple process, easy operation and low cost, and the prepared catalyst has excellent catalytic activity and stability in the reaction of methane autothermal reforming to prepare synthesis gas.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a Ni / ZrO 2 Catalyst and its preparation method and a method for preparing synthesis gas by autothermal reforming of methane. Background technique [0002] Using natural gas (methane) as raw material to prepare synthesis gas through reforming reaction is the main way of industrial application of natural gas. In order to improve the traditional methane steam reforming process and consider the rational use of energy and raw materials to reduce the production cost of synthesis gas, some combined reforming processes have been developed. Among them, the methane autothermal reforming process has attracted much attention because of its energy-saving and environmental protection characteristics. Its basic principle is to couple the exothermic methane partial oxidation reaction and the strong The heat is self-heating, and the use of reaction heat is more reasonable, which ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755C01B3/40
CPCY02P20/52
Inventor 刘红梅张明森冯静姜健准徐向亚
Owner CHINA PETROLEUM & CHEM CORP
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