阅读说明：本技术 一种高性能的碱式碳酸盐类电解水催化剂及其制备方法 (High-performance basic carbonate type electrolyzed water catalyst and preparation method thereof ) 是由 吴仁兵 孙莉莉 于 2021-07-15 设计创作，主要内容包括：本发明公开了催化剂技术领域的一种高性能的碱式碳酸盐类电解水催化剂及其制备方法,该电解水催化剂为生长在泡沫金属基底上的碱式碳酸盐纳米片,在碱式碳酸盐纳米片上覆盖总面积90-95％的碳酸钙,将上述封装的反应釜加热至一定温度并反应,反应结束后停止加热,得到均匀生长在泡沫金属骨架上的碱式碳酸盐纳米片阵列电解水催化剂,再将碳酸钙置于反应釜内进行反应,使得碳酸钙附着在碱式碳酸盐纳米片阵列电解水催化剂的表面,本发明通过在碱式碳酸盐纳米片上覆盖总面积90-95％的纳米碳酸钙,通过碳酸钙的不溶于的特性减缓催化剂的释放速率,保障催化剂能够长效持久的释放,保障了电解水氢氧的析出。(The invention discloses a high-performance basic carbonate type electrolytic water catalyst and a preparation method thereof in the technical field of catalysts, the electrolytic water catalyst is a basic carbonate nanosheet growing on a foam metal substrate, calcium carbonate with the total area of 90-95% is covered on the basic carbonate nanosheet, a packaged reaction kettle is heated to a certain temperature and reacts, after the reaction is finished, the heating is stopped to obtain the basic carbonate nanosheet array electrolytic water catalyst uniformly growing on a foam metal framework, and then the calcium carbonate is placed in the reaction kettle to react to enable the calcium carbonate to be attached to the surface of the basic carbonate nanosheet array electrolytic water catalyst, the invention ensures that the catalyst can be released for a long time and durably by covering the basic carbonate nanosheet with the total area of 90-95% of nano calcium carbonate, slowing down the release rate of the catalyst by the insolubility characteristic of the calcium carbonate, ensuring the separation of the electrolytic water oxyhydrogen.)

1. A high-performance basic carbonate type electrolytic water catalyst is characterized in that: the electrolytic water catalyst is an alkali carbonate nanosheet growing on a foam metal substrate, and 90-95% of calcium carbonate in the total area is covered on the alkali carbonate nanosheet.

2. A high performance basic carbonate based electrolyzed water catalyst as defined in claim 1 wherein: the basic carbonate is transition metal basic carbonate.

3. A high performance basic carbonate based electrolyzed water catalyst as defined in claim 2 wherein: the transition metal in the transition metal basic carbonate is selected from one or more of cobalt, iron, nickel, manganese and copper.

4. A high performance basic carbonate based electrolyzed water catalyst as defined in claim 1 wherein: the foam metal is selected from foam nickel, foam iron, foam cobalt or foam copper.

5. A high performance basic carbonate based electrolyzed water catalyst as defined in claim 1 wherein: the calcium carbonate is nano calcium carbonate.

6. A method of preparing a high performance basic carbonate based electrolyzed water catalyst as defined in claim 1, wherein: the preparation method of the high-performance basic carbonate type electrolyzed water catalyst comprises the following steps:

s1: dissolving soluble transition metal acetate and hexamethylenetetramine in an organic alcohol solvent, stirring to uniformly dissolve the soluble transition metal acetate and hexamethylenetetramine, transferring the solution to a reaction kettle, and then putting foam metal into the reaction kettle;

s2: heating the packaged reaction kettle to a certain temperature for reaction, and stopping heating after the reaction is finished to obtain the basic carbonate nanosheet array electrolytic water catalyst uniformly growing on the foam metal framework;

s3: and then placing the calcium carbonate into a reaction kettle for reaction so that the calcium carbonate is attached to the surface of the water electrolysis catalyst of the alkali carbonate nanosheet array.

7. The method for preparing a high-performance basic carbonate type electrolyzed water catalyst according to claim 6, characterized in that: the heating temperature of the reaction kettle in the step S2 is 90-250 ℃, and the reaction time is 1-3 h.

8. The method for preparing a high-performance basic carbonate type electrolyzed water catalyst according to claim 6, characterized in that: the pressure of the reaction kettle in the step S3 is increased to 10-11MPa, the heating temperature is 800-900 ℃, and the reaction time is 30-45 min.

Technical Field

The invention relates to the technical field of catalysts, in particular to a high-performance basic carbonate type electrolyzed water catalyst and a preparation method thereof.

Background

Energy is the foundation stone for various production activities of human society and is the most main driving force for the development of human productivity. From ancient times to the present, fossil energy has been used as the energy source mainly utilized by human beings, and its consumption rate has become faster and faster as human beings develop, particularly since the introduction into the industrialized society, the existing storage is about to be depleted over several ages. The increasing rate of consumption of fossil energy and the increasing problem of environmental pollution have attracted public attention, and therefore, it is urgent to develop a sustainable alternative energy. Among these methods for solving the energy problem, the electrolysis of water to generate hydrogen and oxygen as fuel has received much attention due to advantages such as environmental friendliness and zero carbon dioxide emission. Among them, the combination of a solar cell device and an electrolytic water device can convert light energy which is difficult to store into chemical fuel which is easy to store and transport, and is a promising approach for solving the energy problem. The electrolyzed water under the alkaline condition has the advantages of no pollution, convenient operation, mature technology, easy large-scale production and the like, and is one of the key points of academic research.

However, when the existing electrolyzed water is electrolyzed by the catalyst, the catalyst is placed in the electrolyzed water for reaction, and the catalyst is rapidly released because the catalyst is directly contacted with the electrolyzed water, so that the electrolyzed water cannot be uniformly fused with the catalyst, and the separation of oxyhydrogen in the electrolyzed water is seriously influenced.

Disclosure of Invention

The invention aims to provide a high-performance basic carbonate type electrolyzed water catalyst and a preparation method thereof, which solve the problems that the catalyst is placed in electrolyzed water for reaction when the traditional electrolyzed water is electrolyzed by the catalyst, and the catalyst is rapidly released due to the direct contact of the catalyst and the electrolyzed water, so that the electrolyzed water cannot be uniformly fused with the catalyst, and the separation of oxyhydrogen of the electrolyzed water is seriously influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a high-performance basic carbonate type catalyst for electrolyzing water is prepared from basic carbonate nano-sheets growing on foamed metal substrate and calcium carbonate covering the basic carbonate nano-sheets by 90-95% of total area.

Preferably, the basic carbonate is a transition metal basic carbonate.

Preferably, the transition metal in the transition metal basic carbonate is selected from one or more of cobalt, iron, nickel, manganese and copper.

Preferably, the foam metal is selected from nickel foam, iron foam, cobalt foam or copper foam.

Preferably, the calcium carbonate is nano calcium carbonate.

A preparation method of a high-performance basic carbonate type electrolyzed water catalyst comprises the following steps:

s1: dissolving soluble transition metal acetate and hexamethylenetetramine in an organic alcohol solvent, stirring to uniformly dissolve the soluble transition metal acetate and hexamethylenetetramine, transferring the solution to a reaction kettle, and then putting foam metal into the reaction kettle;

s2: heating the packaged reaction kettle to a certain temperature for reaction, and stopping heating after the reaction is finished to obtain the basic carbonate nanosheet array electrolytic water catalyst uniformly growing on the foam metal framework;

s3: and then placing the calcium carbonate into a reaction kettle for reaction so that the calcium carbonate is attached to the surface of the water electrolysis catalyst of the alkali carbonate nanosheet array.

Preferably, the heating temperature of the reaction kettle in the step S2 is 90-250 ℃, and the reaction time is 1-3 h.

Preferably, the pressure of the reaction kettle in the step S3 is 10-11MPa, the heating temperature is 800-900 ℃, and the reaction time is 30-45 min.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the nano calcium carbonate with the total area of 90-95% is covered on the basic carbonate nanosheets, the release rate of the catalyst is slowed down by the insolubility characteristic of the calcium carbonate, the catalyst can be released for a long time and a long time, and the separation of electrolytic water hydrogen and oxygen is ensured.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The invention provides a high-performance basic carbonate type electrolyzed water catalyst, which is characterized in that the basic carbonate nanosheets are covered with 90-95% of nano calcium carbonate in the total area, the insoluble characteristic of the calcium carbonate is utilized to slow the release rate of the catalyst, so that the catalyst can be released for a long time and durably, and the separation of electrolyzed water oxyhydrogen is ensured;

the electrolytic water catalyst is an alkali carbonate nanosheet growing on a foamed metal substrate, 90-95% of calcium carbonate in the total area is covered on the alkali carbonate nanosheet, the alkali carbonate is transition metal alkali carbonate, transition metal in the transition metal alkali carbonate is selected from one or more of cobalt, iron, nickel, manganese and copper, foamed metal is selected from foamed nickel, foamed iron, foamed cobalt or foamed copper, and calcium carbonate is nano calcium carbonate.

The invention also provides a preparation method of the high-performance basic carbonate type electrolyzed water catalyst,

the preparation method of the high-performance basic carbonate type electrolyzed water catalyst comprises the following steps:

s1: dissolving soluble transition metal acetate and hexamethylenetetramine in an organic alcohol solvent, stirring to uniformly dissolve the soluble transition metal acetate and hexamethylenetetramine, transferring the solution to a reaction kettle, and then putting foam metal into the reaction kettle;

s2: heating the packaged reaction kettle to a certain temperature, reacting, and stopping heating after the reaction is finished to obtain the basic carbonate nanosheet array electrolytic water catalyst uniformly growing on the foam metal framework, wherein the heating temperature of the reaction kettle is 90-250 ℃, and the reaction time is 1-3 h;

s3: and then placing the calcium carbonate into a reaction kettle for reaction, so that the calcium carbonate is attached to the surface of the water electrolysis catalyst of the alkali carbonate nanosheet array, pressurizing the reaction kettle to 10-11MPa, heating the reaction kettle to 800-.

Example 1

The preparation method of the high-performance basic carbonate type electrolyzed water catalyst comprises the following steps:

s1: dissolving soluble transition metal acetate and hexamethylenetetramine in an organic alcohol solvent, stirring to uniformly dissolve the soluble transition metal acetate and hexamethylenetetramine, transferring the solution to a reaction kettle, and then putting foam metal into the reaction kettle;

s2: heating the packaged reaction kettle to a certain temperature, reacting, and stopping heating after the reaction is finished to obtain the basic carbonate nanosheet array electrolytic water catalyst uniformly growing on the foam metal framework, wherein the heating temperature of the reaction kettle is 250 ℃, and the reaction time is 1 h;

s3: and then placing the calcium carbonate into a reaction kettle for reaction, so that the calcium carbonate is attached to the surface of the water electrolysis catalyst of the alkali carbonate nanosheet array, pressurizing the reaction kettle to 11MPa, heating the reaction kettle to 900 ℃, and reacting for 30 min.

Example 2

The preparation method of the high-performance basic carbonate type electrolyzed water catalyst comprises the following steps:

s1: dissolving soluble transition metal acetate and hexamethylenetetramine in an organic alcohol solvent, stirring to uniformly dissolve the soluble transition metal acetate and hexamethylenetetramine, transferring the solution to a reaction kettle, and then putting foam metal into the reaction kettle;

s2: heating the packaged reaction kettle to a certain temperature, reacting, and stopping heating after the reaction is finished to obtain the basic carbonate nanosheet array electrolytic water catalyst uniformly growing on the foam metal framework, wherein the heating temperature of the reaction kettle is 150 ℃, and the reaction time is 2 hours;

s3: and then placing the calcium carbonate into a reaction kettle for reaction, so that the calcium carbonate is attached to the surface of the basic carbonate nanosheet array electrolytic water catalyst, pressurizing the reaction kettle to 10MPa, heating to 870 ℃, and reacting for 40 min.

Example 3

The preparation method of the high-performance basic carbonate type electrolyzed water catalyst comprises the following steps:

s1: dissolving soluble transition metal acetate and hexamethylenetetramine in an organic alcohol solvent, stirring to uniformly dissolve the soluble transition metal acetate and hexamethylenetetramine, transferring the solution to a reaction kettle, and then putting foam metal into the reaction kettle;

s2: heating the packaged reaction kettle to a certain temperature, reacting, and stopping heating after the reaction is finished to obtain the basic carbonate nanosheet array electrolytic water catalyst uniformly growing on the foam metal framework, wherein the heating temperature of the reaction kettle is 90 ℃, and the reaction time is 3 hours;

s3: and then placing the calcium carbonate into a reaction kettle for reaction, so that the calcium carbonate is attached to the surface of the water electrolysis catalyst of the alkali carbonate nanosheet array, pressurizing the reaction kettle to 10MPa, heating to 800 ℃, and reacting for 45 min.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be combined in any suitable manner so long as no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all technical aspects falling within the scope of the appended claims.