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Preparation method of supported metal catalysts

A metal catalyst, supported technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. less difficult effect

Inactive Publication Date: 2015-10-14
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to solve the problem that supported metal catalysts are easily deactivated under high temperature conditions, and provide a supported metal catalyst with long-term stability under high temperature conditions while retaining the convenience and low cost advantages of conventional impregnation methods preparation method

Method used

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  • Preparation method of supported metal catalysts
  • Preparation method of supported metal catalysts

Examples

Experimental program
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Embodiment 1

[0027] Weigh cobalt nitrate, silicon dioxide, and arginine with mass percentages of 0.1%, 10%, and 0.01%, respectively, and add them to 1 ton of water, and stir to mix evenly. Dry at 150°C, bake at 600°C, and heat at 600°C 2 Reduction to get Co / SiO 2 supported catalyst.

Embodiment 2

[0029] The mass percentages in Example 1 were replaced by 10%, 20%, and 8%, and arginine was replaced by methylamine to obtain Co / SiO 2 supported catalyst.

Embodiment 3

[0031] The mass percentages in Example 1 are replaced by 20%, 60%, and 10% in turn to obtain Co / SiO 2 supported catalyst.

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Abstract

The invention discloses a preparation method of supported metal catalysts, and relates to the metal catalysts. Provided is the preparation method of the supported metal catalysts, wherein the catalysts have long-term stability in a high temperature condition while the simplicity and low-cost advantages of a conventional impregnation method are retained. Metal salt, silica, an additive and water are mixed to form a mixture, and the mixture is impregnated, dried, calcined and reduced successively to obtain the supported metal catalysts. A series of metal-based supported catalysts are prepared by the improved impregnation method, have the characteristics of high metal dispersibility, high catalytic activity, high stability, sintering resistance and the like, and have good industrial application prospects. The preparation method has the advantages of simple process, stability, good repeatability, low cost and the like.

Description

technical field [0001] The invention relates to a metal catalyst, in particular to a preparation method of a highly stable supported metal catalyst. Background technique [0002] The supported metal catalyst prepared by impregnation method is suitable for mass production due to its simple operation and low cost. At the same time, supported metal catalysts have good catalytic activity for reactions such as Fischer-Tropsch synthesis and partial oxidation of methane to synthesis gas, and have large-scale industrial application prospects and economic needs. In the supported metal catalysts prepared by impregnation method, the interaction between the active metal particles and the support is weak, and the catalysts generally have the disadvantages of uneven dispersion of metal particles and easy sintering at high temperature leading to deactivation. The instability under high-temperature reaction conditions seriously hinders its industrial application. In order to improve the h...

Claims

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Application Information

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IPC IPC(8): B01J37/02B01J37/18B01J23/75B01J23/745B01J23/755B01J23/72B01J23/50
Inventor 黄传敬杨美华刘圣杰
Owner XIAMEN UNIV
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