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A kind of binary cobalt-based non-precious metal co-b catalyst and preparation method thereof

A non-precious metal, binary cobalt-based technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Hydrogen application, cost reduction and other issues, to achieve a wide range of application prospects, suitable for large-scale preparation, the effect of activation energy reduction

Active Publication Date: 2016-01-20
信泰建设工程(北京) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are still some problems in the research of non-noble metal catalysts in the field of hydrogen production from sodium borohydride: (1) The method of improving the catalytic performance of non-noble metals is mainly concentrated on compounding with noble metals. However, the existence of noble metals will inevitably affect the application of sodium borohydride to hydrogen production; (2) The research focus of binary non-noble metals is to find element combinations with better catalytic performance, and there is a lack of research on the influence of phase composition, morphology, etc. on catalytic performance. Systematic research, therefore, the invention of a binary cobalt-based non-noble metal Co-B catalyst with good catalytic performance and controllable morphology will be of great significance for improving the practical application of hydrogen production from sodium borohydride

Method used

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  • A kind of binary cobalt-based non-precious metal co-b catalyst and preparation method thereof
  • A kind of binary cobalt-based non-precious metal co-b catalyst and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0019] Preparation of binary cobalt-based non-noble metal Co-B catalyst:

[0020] 1) Preparation of copper etching solution, sensitization solution and activation solution

[0021] Measure 50ml of phosphoric acid, 38ml of acetic acid, and 12ml of nitric acid to prepare 100ml of copper etching solution (the copper etching solution is used in the following examples). Weigh 1g of stannous chloride dihydrate and ultrasonically dissolve it in 5mL hydrochloric acid, add distilled water to make up to 1L to make a sensitizing solution; weigh 0.1g of palladium chloride to ultrasonically dissolve in 1mL of hydrochloric acid, add distilled water to make up to 1L to make a activation solution.

[0022] 2) Preparation of electroless plating solution

[0023] Weigh 1.2g cobalt sulfate heptahydrate, 5.8g citric acid, add distilled water to 80mL, wait until completely dissolved, adjust the pH value of the solution to 11, add 0.08g sodium borohydride and 0.005g sodium dodecylsulfonate, and t...

Embodiment 2

[0027] 1) Preparation of copper etching solution, sensitization solution and activation solution is the same as Step 1 of Example 1.

[0028] 2) Preparation of electroless plating solution

[0029] Weigh 1g cobalt chloride hexahydrate, 5.8g citric acid, add distilled water to 80mL, wait for complete dissolution, adjust the pH value of the solution to 11, add 0.08g sodium borohydride and 0.005g sodium dodecylsulfonate, and transfer to After the 100mL volumetric flask was made to volume with distilled water, it was used as the plating solution for later use. Adjust the pH value to 12.5 and the temperature to 20°C.

[0030] 3) Preparation of binary cobalt-based non-noble metal Co-B catalyst is the same as step 3 of Example 1. The resulting catalyst is designated CB-B.

[0031] figure 1It is the scanning electron microscope (SEM) picture of the binary cobalt-based non-noble metal Co-B catalyst CB-B sample prepared at a temperature of 20 °C. It can be seen from the figure that...

Embodiment 3

[0033] 1) Preparation of copper etching solution, sensitization solution and activation solution is the same as Step 1 of Example 1.

[0034] 2) Preparation of electroless plating solution

[0035] Weigh 1g cobalt chloride hexahydrate, 5.8g citric acid, add distilled water to 80mL, wait for complete dissolution, adjust the pH value of the solution to 11, add 0.1g sodium borohydride and 0.005g sodium dodecylsulfonate, and transfer to After the 100mL volumetric flask was made to volume with distilled water, it was used as the plating solution for later use. Adjust the pH value to 12 and the temperature to 25°C.

[0036] 3) Preparation of binary cobalt-based non-noble metal Co-B catalyst is the same as step 3 of Example 1. The resulting catalyst is designated CB-C.

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Abstract

The invention discloses a bicobalt-based non-noble metal Co-B catalyst and a preparation method thereof, and mainly solves the problems of high technical cost and complicated processes in the prior art. The catalyst takes a metal base as a carrier, an electroless plating method is used for performing co-deposition to obtain metal Co and nonmetal B, and then an appearance controllable spherical nano Co-B catalyst material is prepared. The particle diameter of the catalyst is about 100-800nm, and spherical particles are formed by stacking relatively small particles with the diameter of 10-60nm. The electroless plating process comprises the specific operation procedures of treating Ni foil, Cu foil and foamed Ni or Cu, which are taken as the base, by a hot alkali solution, a copper corrosion solution, a sensitizing solution and an activating solution, and immersing in the plating solution for electroless plating, thereby obtaining the bicobalt-based base metal Co-B catalyst. The method is simple in process, low in cost, high in repeatability and suitable for large-scale preparation, the catalyst is high in purity, and the catalyst and the method have wide application prospects in the aspect of vehicle-mounted oxygen storage.

Description

technical field [0001] The invention relates to a catalyst and a preparation method, in particular to a preparation method of a nanometer binary cobalt-based non-noble metal Co-B catalyst with controllable morphology and its application in hydrogen production from sodium borohydride, belonging to the technical field of inorganic chemistry . Background technique [0002] With the rapid development of the global economy and the continuous consumption of petrochemical energy such as coal, oil and natural gas, hydrogen energy has become a new energy source to solve the current energy crisis. Due to its clean and efficient advantages, hydrogen energy can be applied to many aspects of production and life, and has become one of the energy sources with development potential. Among various potential hydrogen storage methods, solid-state hydrogen storage materials are significantly superior to high-pressure container hydrogen storage and low-temperature liquid hydrogen storage in ter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J37/00C01B3/06
CPCY02E60/36
Inventor 王艳付雅君武士威曹中秋刘宏鑫
Owner 信泰建设工程(北京)