CN1947844A - Carried catalyst electroplating method for hydrolyzing hydroborates to produce hydrogen - Google Patents
Carried catalyst electroplating method for hydrolyzing hydroborates to produce hydrogen Download PDFInfo
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- CN1947844A CN1947844A CNA2005100153898A CN200510015389A CN1947844A CN 1947844 A CN1947844 A CN 1947844A CN A2005100153898 A CNA2005100153898 A CN A2005100153898A CN 200510015389 A CN200510015389 A CN 200510015389A CN 1947844 A CN1947844 A CN 1947844A
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- electroplating
- catalyst
- hydrolyzing
- preparing hydrogen
- borohydride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
An electroplated catalyst for preparing H2 from boron hydride by hydrolysis is characterized by that its active component is carried through electroplating. Its preparing process includes such steps as preparing electroplating solution through dissolving metal salt in distilled water, adding additive, regulating pH value and heating, electroplating the carrier, washing with distilled water, and drying.
Description
Technical Field
The invention belongs to the technical field of hydrogen energy catalysis, and particularly relates to a method for preparing hydrogen by hydrolyzing borohydride and electroplating an carried catalyst.
Background
In recent years, many scholars at home and abroad research the hydrogen production through the hydrolysis reaction of metal borohydride and apply for some patents. The principle of the method is that the metal borohydride is dissolved in alkaline solution to facilitate storage, and a metal catalyst is added to accelerate the reaction when the metal borohydride is used. The Amendola carries Ru on IRA-400 cation resin as a catalyst to carry out catalytic hydrogen production on metal borohydride. The preparation of the compound is carried out by the processes of dissolution, adsorption, exchange and the like, and the steps are complex and the process is complex. Chinese patent (CN 1565958A) discloses a method of depositing a catalyst on a porous substrate, wherein the catalyst is formed by blocking the pores of the porous carrier, and when the reaction occurs, the gas pressure in the pores is increased, and the catalyst is liable to fall off.
Disclosure of Invention
The hydrogen production by borohydride hydrolysis is that metal borohydride is dissolved in alkaline solution, and after the metal borohydride contacts with a catalyst, the metal borohydride undergoes hydrolysis reaction to release hydrogen, which is expressed by the following equation:
m is alkali metal, which may be one or several of Na, K and Li, and under the action of catalyst, the metal borohydride reacts with water to produce metaborate and hydrogen.
The catalyst is carried into and on the surface of the porous carrier by electroplating.
The invention adopts the following technical scheme:
the method for preparing hydrogen by hydrolyzing borohydride and electroplating carried catalyst, wherein the metal catalyst is carried in the carrier and on the surface by electroplating, and the method is characterized in that the preparation process of the metal catalyst for preparing hydrogen by catalyzing the hydrolysis of borohydride comprises the following steps:
(1) preparing electroplating solution according to the proportion: dissolving 1-50g of metal salt in 1-10L of distilled water, adding 0.2-2g of additive, adjusting the pH value to 0.1-3, and heating the solution to 30-100 ℃;
wherein: the metal salt solution is one or a mixture of more of nitrites, halides, sulfates and phosphates of palladium, platinum, rhodium, ruthenium, osmium, iridium, nickel and cobalt;
the additive is sodium nitrite, ammonium nitrate, ammonium chloride, potassium hydroxide or phosphoric acid;
(2) electroplating the catalyst carrier: connecting the inert anode with the anode, connecting the catalyst carrier with the cathode, and adjusting the current density to 0.1-10A/dm2The electroplating time is 1-120 minutes;
(3) cleaning and drying: taking out, washing with distilled water, and drying to obtain the catalyst.
The invention can also adopt the following technical measures:
the method for preparing hydrogen by hydrolyzing borohydride and electroplating the carried catalyst is characterized in that: adjusting pH to 0.1-3 with sulfuric acid, sodium hydroxide or ammonia water.
The method for preparing hydrogen by hydrolyzing borohydride and electroplating the carried catalyst is characterized in that: the catalyst carried by the electroplating is naturally dried.
The method for preparing hydrogen by hydrolyzing borohydride and electroplating the carried catalyst is characterized in that: the matrix porous carrier is copper, iron, tin and nickel.
The method for preparing hydrogen by hydrolyzing borohydride and electroplating the carried catalyst is characterized in that: the matrix porous carrier is in a sheet shape, a net shape, particles or foam.
The invention has the advantages and positive effects that:
1. the electroplating method for loading the catalyst has the advantages that the plating layer on the surface of the substrate is very thin, the holes in the porous carrier cannot be filled, the resistance is small when the reaction solution flows, and the power consumption of the water pump is reduced.
2. The thickness of the plating layer obtained by electroplating is small, the active surface of the catalyst is large with the same weight, and the utilization rate of the catalyst is high.
3. The catalyst has high adhesion firmness on the substrate and can not falloff.
4. The catalyst is attached to a porous carrier and can be made into various shapes such as a sheet, a net, particles and the like.
5. The preparation method of the catalyst is simple, and the catalyst can be prepared in batches.
Drawings
FIG. 1 is a schematic view of the structure of an apparatus used in the present invention;
the method comprises the following steps of 1-electronic load, 2-electroplating bath, 3-electroplating solution, 4-cathode, 5-stabilized voltage power supply, 6-anode, 7-stirring paddle and 8-heating furnace.
Figure 2 is a plot of the rate of hydrogen generation when the present invention is used.
Detailed Description
To further clarify the disclosure, features and advantages of the present invention, the following examples are set forth in the appended claims:
example 1
Reference is made to figures 1 and 2.
Mixing 4gRhSO4And 2g of sulfuric acid in 1 liter of distilled water, heating to 45 ℃, opening the stirrer, and placing the inert anode and the 5X 5cm to be plated2Inserting a nickel net into the solution, adjusting the electronic load to ensure that the current is constant at 0.5A, electroplating for 30 minutes, taking out, washing with distilled water, and naturally drying to obtain the rhodium catalyst.
Example 2
80g of PdCl2And 2gNH4Cl was dissolved in 1L of distilled water, the temperature was kept constant at 42 ℃, the stirrer was switched on, and the inert anode and the 5X 5cm to be plated were placed2Inserting an iron net into the solution, adjusting the electronic load to make the current constant at 0.5A, electroplating for 50 minutes, taking out, washing with distilled water, and naturally drying to obtain the palladium catalystAn oxidizing agent.
Example 3
2.5g NaOH was dissolved in 15mL distilled water, and 3.5g NaBH was added4Then adding the plated catalyst to obtain 8.2 liters of hydrogen in 6 minutes, wherein the average rate of the generated hydrogen is 1.37L/min, and the solution has no falling catalyst particles after the reaction is finished. The generated hydrogen rate curve is shown in figure 2, the series 3 is a catalyst which is directly reduced to generate powder, and the activity of the electroplated catalyst is good.
Claims (5)
1. A method for preparing hydrogen by hydrolyzing borohydride and electroplating carried catalyst, wherein the metal catalyst is carried in the carrier and on the surface by electroplating, which is characterized in that the preparation process of the metal catalyst for preparing hydrogen by hydrolyzing borohydride comprises the following steps:
(1) preparing electroplating solution according to the proportion: dissolving 1-50g of metal salt in 1-10L of distilled water, adding 0.2-2g of additive, adjusting the pH value to 0.1-3, and heating the solution to 30-100 ℃;
wherein: the metal salt solution is one or a mixture of more of nitrites, halides, sulfates and phosphates of palladium, platinum, rhodium, ruthenium, osmium, iridium, nickel and cobalt;
the additive is sodium nitrite, ammonium nitrate, ammonium chloride, potassium hydroxide or phosphoric acid;
(2) electroplating the catalyst carrier: connecting the inert anode with the anode, connecting the catalyst carrier with the cathode, and adjusting the current density to 0.1-10A/dm2The electroplating time is 1-120 minutes;
(3) cleaning and drying: taking out, washing with distilled water, and drying to obtain the catalyst.
2. The method for preparing hydrogen by hydrolyzing borohydride and electroplating with a catalyst according to claim 1, which comprises: adjusting pH to 0.1-3 with sulfuric acid, sodium hydroxide or ammonia water.
3. The method for preparing hydrogen by hydrolyzing borohydride and electroplating with a catalyst according to claim 1, which comprises: the catalyst carried by the electroplating is naturally dried.
4. The method for preparing hydrogen by hydrolyzing borohydride and electroplating with a catalyst according to claim 1, which comprises: the matrix porous carrier is copper, iron, tin and nickel.
5. The method for preparing hydrogen by hydrolyzing borohydride and electroplating with a catalyst according to claim 1, which comprises: the matrix porous carrier is in a sheet shape, a net shape, particles or foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100153898A CN1947844A (en) | 2005-10-14 | 2005-10-14 | Carried catalyst electroplating method for hydrolyzing hydroborates to produce hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100153898A CN1947844A (en) | 2005-10-14 | 2005-10-14 | Carried catalyst electroplating method for hydrolyzing hydroborates to produce hydrogen |
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| CN1947844A true CN1947844A (en) | 2007-04-18 |
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| CNA2005100153898A Pending CN1947844A (en) | 2005-10-14 | 2005-10-14 | Carried catalyst electroplating method for hydrolyzing hydroborates to produce hydrogen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757918A (en) * | 2008-10-24 | 2010-06-30 | 原子能委员会 | Catalytic system for generating hydrogen by the hydrolysis reaction of metal borohydrides |
| CN104671201A (en) * | 2015-02-15 | 2015-06-03 | 武汉科技大学 | Hydrogen production method employing borohydride hydrolysis based on ammonium salt catalyst |
-
2005
- 2005-10-14 CN CNA2005100153898A patent/CN1947844A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757918A (en) * | 2008-10-24 | 2010-06-30 | 原子能委员会 | Catalytic system for generating hydrogen by the hydrolysis reaction of metal borohydrides |
| CN101757918B (en) * | 2008-10-24 | 2014-03-26 | 原子能委员会 | Catalytic system for generating hydrogen by the hydrolysis reaction of metal borohydrides |
| CN104671201A (en) * | 2015-02-15 | 2015-06-03 | 武汉科技大学 | Hydrogen production method employing borohydride hydrolysis based on ammonium salt catalyst |
| CN104671201B (en) * | 2015-02-15 | 2016-08-17 | 武汉科技大学 | A kind of hydrogen production process of borohydride hydrolytic based on ammonium salt in catalysis agent reaction |
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