CN107640742A - A kind of silica-based high-efficiency solid-state hydrogen production agent - Google Patents
A kind of silica-based high-efficiency solid-state hydrogen production agent Download PDFInfo
- Publication number
- CN107640742A CN107640742A CN201711141166.5A CN201711141166A CN107640742A CN 107640742 A CN107640742 A CN 107640742A CN 201711141166 A CN201711141166 A CN 201711141166A CN 107640742 A CN107640742 A CN 107640742A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- hydrogen production
- production agent
- silica
- grams
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Silicon Compounds (AREA)
Abstract
A kind of silica-based high-efficiency solid-state hydrogen production agent, sawdust mud caused by diamond wire saw cut silicon chip is subjected to clean and reuse, then recovery silica flour and a certain proportion of special reaction promoter mechanical mixture and will be molded blocking, and be encapsulated and produced with plastic sheeting.Reaction promoter used is made up of the one or more of sodium hydroxide, sodium chloride, calcium oxide and caustic alcohol.Gained hydrogen production agent can directly react generation hydrogen with water, every gram of hydrogen production agent can 0.3 0.6 liters of hydrogen manufacturing, maximum hydrogen production rate can regulate and control in 0.1 0.5 liters/min scopes with water addition ratio example and hydrogen manufacturing agent prescription.Product caused by reaction is harmless silica and silicate.The hydrogen production agent input water in can hydrogen manufacturing immediately, a kind of convenient hydrogen source can be provided for hydrogen utilization.
Description
Technical field
The invention belongs to Hydrogen Energy field, and a kind of solid state hydrogen source of the gas for being easy to accumulating is provided for hydrogen utilization, is related to a kind of height
Imitate the design of solid-state hydrogen production agent and preparation method.
Background technology
Hydrogen power generation is a kind of clean electric power for having very big complementary advantage with other new energy electric power such as photovoltaics, but
Its development is limited by hydrogen and is difficult to mass storage and transports so basic limit to.Larger potential safety hazard, cost be present in high pressure accumulating
It is higher；All kinds of hydrogen storage material technologies can't reach real requirement so far；High Efficiency Solid-State hydrogen production agent easily can be stored and transported
Defeated arrive provides use using scene, a large amount of fast hydrogen makings, so as to as a kind of practical option for solving hydrogen accumulating problem.
Solid-state hydrogen production agent common at present is generally the aluminium base hydrogen production agent based on aluminium and water reaction generation hydrogen, its raw material sources
Limited and cost is higher.Silicon substrate hydrogen production agent based on silicon and water reaction generation hydrogen can reduce cost, while expand solid-state hydrogen manufacturing
The raw material range of agent.Chen Xin etc. once discloses a kind of preparation method of silicon/alkali metal hydrogen manufacturing material（CN 107188123 A）；Yin Tian
Chu etc. once discloses a kind of preparation method of the hydrogen manufacturing material based on magnesium silicon, aluminium silicon and zinc silicon alloy（CN 107188124 A）.This
Two methods are directed to alloy preparation and high-temperature process requirement, and cost can be higher, and high-temperature oxydation be present is passivated hydrogen manufacturing material
Hidden danger.Paul Brack etc. once report a kind of experimental study with Antaciron hydrogen manufacturing（International Journal
of Energy Research (2017, open access)）, as a result show that its hydrogen production efficiency is relatively low.Hsing-Yu Tuan
Deng one kind is once reported hydrogen manufacturing is reacted to reclaim filings obtained through silicon wafer cutting powder and potassium hydroxide solution and by adding silicic acid and sodium metasilicate
The research of hydrogen production efficiency is provided（Journal of Materials Chemistry A, vol.4 (2016), 12921）；They
And then disclose a kind of device for preparing reaction solution, heating and hydrogen manufacturing being reacted with silica flour and water.This method can be realized low
The efficient hydrogen manufacturing of cost, but from the point of view of application demand, it also has two.First, system, which reacts to be formed, is largely insoluble in water
Potassium silicate precipitates, it is difficult to is discharged in time from reactor, is unfavorable for extensive continuous application；2nd, user needs to prepare reaction every time
Solution, it is inconvenient in many field applications.
The content of the invention
It is an object of the invention to provide a kind of inexpensive High Efficiency Solid-State hydrogen production agent.It operates with facility, puts into water
In can a large amount of hydrogen manufacturing, also without heating；A large amount of solid phase precipitation products are not produced in hydrogen manufacturing yet.
The present invention is achieved by the following technical solutions.
A kind of silica-based high-efficiency solid-state hydrogen production agent of the present invention, as follows：Produced by diamond wire saw cut silicon chip
Raw sawdust mud clean and reuse silica flour, recovery method are that the sawdust is pressed into 1：3~6 solid-liquid mass ratio is inserted 0.2~1.2 and rubbed
The hydrofluoric acid aqueous solution of that/liter concentration, stirred at 35~55 DEG C 0.5~4 hour, then filter, dry；Afterwards, by gained
Powder stirring and washing 0.5~1 hour in organic solvent, filtering, drying, is recycled silica flour.By this silica flour and reaction promoter
Mechanical mixture and briquetting encapsulation, produce the High Efficiency Solid-State hydrogen production agent of the present invention.
Described silica flour content is 20-80%wt, and remaining is reaction promoter.
Described reaction promoter is made up of the one or more of sodium hydroxide, sodium chloride, calcium oxide and caustic alcohol.It is formed
In mass ratio：Sodium hydroxide：Sodium chloride：Calcium oxide：Caustic alcohol=40~100：0~10：0~10：0~60.
Briquetting of the present invention encapsulation, with metal pattern under 0.1~1.5 MPa of pressure it is compressing, and immediately with modeling
Expect thin-film package.
It can occur rapidly to replace the redox reaction of hydrogen in water outlet with silicon in hydrogen production agent input water of the present invention,
Hydrogen is generated, each mole of silicon can at most produce two moles of hydrogen in theory.
0.3~0.6 liter of hydrogen can be prepared using every gram of the hydrogen production agent, its hydrogen manufacturing speed can be made up of water addition ratio example with it matches somebody with somebody
Than regulation and control, every gram of hydrogen production agent maximum hydrogen manufacturing speed is 0.1-0.5 liters/min.Using the hydrogen production agent without advance computer heating control water
Temperature, there is good hydrogen manufacturing effect in normal-temperature water.With the traceable measurement reaction hydrogen output of drainage.Fig. 1 is to be obtained in one group of experiment
To hydrogen output of the hydrogen production agent in normal-temperature water of different sodium hydrate contents change over time typical curve.Can by this class curve
To calculate the gas production rate at each moment in the accumulative maximum gas production and course of reaction of hydrogen production agent, including the maximum production reached
Gas velocity rate.
Table 1 lists the aerogenesis effect data using the High Efficiency Solid-State hydrogen production agent of different compositions obtained by the inventive method, including
Maximum gas production and maximum gas production rate.In the case where maximum gas production is certain, gas production rate height can be big in time with the short time
Amount supply, and gas production rate is low, can be supplied in disposable charging application with the long period, has its difference to be applicable respectively
Occasion.
Brief description of the drawings
Fig. 1 reacts hydrogen output for the High Efficiency Solid-State hydrogen production agent of different sodium hydrate contents in normal-temperature water and changes over time song
Line（Sodium chloride content 1.5%, calcium oxide content 1.5%, remaining is silica flour）.
Embodiment
The present invention is described in further detail with reference to embodiment.Used diamond wire saw cut silicon chip sawdust
Mud comes from plant emissions material, and silicon content is higher than 80%；Unless otherwise noted, used each chemical reagent and solvent are chemistry
Pure, purity is more than 99%.
Embodiment 1.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.2 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 25 grams of silica flour, and 20 grams of sodium hydroxides, 1 gram of sodium chloride, 1 gram of calcium oxide and 3 grams of caustic alcohol mechanical mixtures, then
Under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.Put into this hydrogen production agent block
The normal temperature of 10 times of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table 1 are reacted with drainage tracking measurement.
Embodiment 2.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 25 grams of silica flour, and 20 grams of sodium hydroxides, 1 gram of sodium chloride, 1 gram of calcium oxide and 3 grams of caustic alcohol mechanical mixtures, then
Under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.Put into this hydrogen production agent block
The normal temperature of 10 times of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table 1 are reacted with drainage tracking measurement.
Embodiment 3.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 1.2 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in acetone, filtering, drying, is recycled silicon
Powder.Fetch and receive 25 grams of silica flour, and 20 grams of sodium hydroxides, 1 gram of sodium chloride, 1 gram of calcium oxide and 3 grams of caustic alcohol mechanical mixtures, then
Under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.Put into this hydrogen production agent block
The normal temperature of 10 times of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table 1 are reacted with drainage tracking measurement.
Embodiment 4.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 25 grams of silica flour, and 10 grams of sodium hydroxides, 1.5 grams of sodium chloride, 1.5 grams of calcium oxide and 12 grams of caustic alcohol mechanical mixtures,
Then under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.With this hydrogen production agent block
Put into the normal temperature of 10 times of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table are reacted with drainage tracking measurement
1。
Embodiment 5.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 25 grams of silica flour, and 22 grams of sodium hydroxides, 1.5 grams of sodium chloride, 1.5 grams of calcium oxide mechanical mixtures, then 1.5 million
Under pa pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.10 times are put into this hydrogen production agent block
The normal temperature of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table 1 are reacted with drainage tracking measurement.
Embodiment 6.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 25 grams of silica flour, and 23.5 grams of sodium hydroxides, 1.5 grams of sodium chloride mechanical mixtures, then under 1.5 MPas of pressure
Briquet in metal pattern, produce the High Efficiency Solid-State hydrogen production agent of the present invention.With the normal of this hydrogen production agent block 10 times of its quality of input
Temperature（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table 1 are reacted with drainage tracking measurement.
Embodiment 7.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 25 grams of silica flour, with 25 grams of sodium hydroxide mechanical mixtures, be then pressed under 1.5 MPas of pressure in metal pattern
Block, produce the High Efficiency Solid-State hydrogen production agent of the present invention.The normal temperature of 10 times of its quality is put into this hydrogen production agent block（20°C）In water, use
Drainage tracking measurement reacts hydrogen output, its hydrogen manufacturing effect row such as table 1.
Embodiment 8.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 12.5 grams of silica flour, and 40 grams of sodium hydroxides, 2 grams of sodium chloride, 2 grams of calcium oxide and 6 grams of caustic alcohol mechanical mixtures, so
Afterwards under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.Thrown with this hydrogen production agent block
Enter the normal temperature of 10 times of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table 1 are reacted with drainage tracking measurement.
Embodiment 9.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 20 grams of silica flour, it is mixed with 24 grams of sodium hydroxides, 1.2 grams of sodium chloride, 1.2 grams of calcium oxide and 3.6 grams of caustic alcohol machineries
Close, then under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.With this hydrogen manufacturing
Agent block puts into the normal temperature of 10 times of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row are reacted with drainage tracking measurement
Such as table 1.
Embodiment 10.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 40 grams of silica flour, and 8 grams of sodium hydroxides, 0.4 gram of sodium chloride, 0.4 gram of calcium oxide and 1.2 grams of caustic alcohol mechanical mixtures,
Then under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.With this hydrogen production agent block
Put into the normal temperature of 10 times of its quality（20°C）In water, hydrogen output, its hydrogen manufacturing effect row such as table are reacted with drainage tracking measurement
1。
Embodiment 11.
100 grams of filings obtained through silicon wafer cutting mud is taken, the hydrofluoric acid aqueous solution of 400 milliliter of 0.7 mol/L concentration is put into, at 40 °C
Lower stirring 2 hours, filtering, drying；Then gained powder is stirred 0.5 hour in ethanol, filtering, drying, is recycled silicon
Powder.Fetch and receive 20 grams of silica flour, it is mixed with 24 grams of sodium hydroxides, 1.2 grams of sodium chloride, 1.2 grams of calcium oxide and 3.6 grams of caustic alcohol machineries
Close, then under 1.5 MPas of pressure in metal pattern briquet, produce the High Efficiency Solid-State hydrogen production agent of the present invention.With this hydrogen manufacturing
Agent block puts into the normal temperature of 5 times of its quality（20°C）In water, hydrogen output is reacted with drainage tracking measurement, its hydrogen manufacturing effect arranges such as
Table 1.
The gas deliverability of the High Efficiency Solid-State hydrogen production agent for the different compositions that table 1 is prepared using the present invention
Note：It is pure to represent chemistry successively by NaOH, NaCl, CaO and CHONa in table（Purity> 99%）Sodium hydroxide, sodium chloride,
Calcium oxide and caustic alcohol.
Claims (2)
- A kind of 1. silica-based high-efficiency solid-state hydrogen production agent, it is characterized in that as follows：The saw as caused by diamond wire saw cut silicon chip Consider mud clean and reuse silica flour to be worth doing, recovery method is that the sawdust is pressed into 1：3~6 solid-liquid mass ratio inserts 0.2~1.2 mol/L The hydrofluoric acid aqueous solution of concentration, stirred at 35~55 DEG C 0.5~4 hour, then filter, dry；Afterwards, gained powder is existed Stirring and washing 0.5~1 hour in organic solvent, filtering, drying, is recycled silica flour；This silica flour and reaction promoter machinery is mixed Merge briquetting encapsulation；Described silica flour content is 20-80%wt, and remaining is reaction promoter；Described reaction promoter is made up of the one or more of sodium hydroxide, sodium chloride, calcium oxide and caustic alcohol, and its composition presses matter Measuring proportioning is：Sodium hydroxide：Sodium chloride：Calcium oxide：Caustic alcohol=40~100：0~10：0~10：0~60.
- 2. silica-based high-efficiency solid-state hydrogen production agent according to claim 1, it is characterized in that described briquetting encapsulation, is existed with metal pattern It is compressing under 0.1~1.5 MPa of pressure, and encapsulated immediately with plastic sheeting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711141166.5A CN107640742B (en) | 2017-11-17 | 2017-11-17 | Silicon-based efficient solid hydrogen production agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711141166.5A CN107640742B (en) | 2017-11-17 | 2017-11-17 | Silicon-based efficient solid hydrogen production agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107640742A true CN107640742A (en) | 2018-01-30 |
| CN107640742B CN107640742B (en) | 2023-01-06 |
Family
ID=61125398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711141166.5A Active CN107640742B (en) | 2017-11-17 | 2017-11-17 | Silicon-based efficient solid hydrogen production agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107640742B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110627016A (en) * | 2019-11-05 | 2019-12-31 | 无锡机电高等职业技术学校 | Method for producing hydrogen by using solid powder hydrogen production agent |
| CN114604826A (en) * | 2020-12-09 | 2022-06-10 | 中国科学院上海硅酸盐研究所 | Hydrogen production method based on fine silicon powder and sodium silicate |
| CN115159453A (en) * | 2022-08-17 | 2022-10-11 | 昆明理工大学 | Method for preparing hydrogen by hydrolyzing photovoltaic cutting silicon waste |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804982A (en) * | 2010-04-15 | 2010-08-18 | 连云港东渡碳化硅有限公司 | Purification method of silicon carbide superfine micropowder |
| CN103508415A (en) * | 2012-11-30 | 2014-01-15 | 太仓克莱普沙能源科技有限公司 | Silicon powder composition, method, reactor and device for producing hydrogen |
| CN107188124A (en) * | 2017-01-06 | 2017-09-22 | 中国计量大学 | A kind of preparation method of silicon substrate hydrogen manufacturing material |
| CN107324279A (en) * | 2017-09-06 | 2017-11-07 | 四川大学 | It is a kind of to improve the method that silicon alkaline process prepares hydrogen |
-
2017
- 2017-11-17 CN CN201711141166.5A patent/CN107640742B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804982A (en) * | 2010-04-15 | 2010-08-18 | 连云港东渡碳化硅有限公司 | Purification method of silicon carbide superfine micropowder |
| CN103508415A (en) * | 2012-11-30 | 2014-01-15 | 太仓克莱普沙能源科技有限公司 | Silicon powder composition, method, reactor and device for producing hydrogen |
| CN107188124A (en) * | 2017-01-06 | 2017-09-22 | 中国计量大学 | A kind of preparation method of silicon substrate hydrogen manufacturing material |
| CN107324279A (en) * | 2017-09-06 | 2017-11-07 | 四川大学 | It is a kind of to improve the method that silicon alkaline process prepares hydrogen |
Non-Patent Citations (2)
| Title |
|---|
| PAUL BRACK ET AL: "Activation of silicon towards hydrogen generation by pelletisation", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| YU HU ET AL: "Hydrogen production using solar grade wasted silicon", 《INTERNATIONALJOURNAL O F HYDROGEN ENERGY》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110627016A (en) * | 2019-11-05 | 2019-12-31 | 无锡机电高等职业技术学校 | Method for producing hydrogen by using solid powder hydrogen production agent |
| CN114604826A (en) * | 2020-12-09 | 2022-06-10 | 中国科学院上海硅酸盐研究所 | Hydrogen production method based on fine silicon powder and sodium silicate |
| CN115159453A (en) * | 2022-08-17 | 2022-10-11 | 昆明理工大学 | Method for preparing hydrogen by hydrolyzing photovoltaic cutting silicon waste |
| CN115159453B (en) * | 2022-08-17 | 2024-04-02 | 昆明理工大学 | Method for producing hydrogen by hydrolyzing photovoltaic cut silicon waste |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107640742B (en) | 2023-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107640742A (en) | A kind of silica-based high-efficiency solid-state hydrogen production agent | |
| CN103086378B (en) | Method for preparing solar polycrystalline silicon by using electro-thermal metallurgy of crystalline silicon cutting wastes | |
| CN105540660B (en) | Zircon sand fluidizing chlorination prepares the process units of ultrapure zirconium oxychloride by-produced tetrachlorosilane | |
| CN105565377B (en) | The method that zircon sand fluidizing chlorination prepares zirconium chloride by-produced tetrachlorosilane | |
| CN107602603A (en) | A kind of preparation method of di-oxalate lithium borate | |
| CN101386415A (en) | Method for preparing inorganic chemical product using waste produced by polycrystalline silicon | |
| CN102009950A (en) | Aluminium-based compound capable of having hydrolysis reaction under neutral and normal temperature conditions to produce hydrogen and preparation method thereof | |
| CN103350990A (en) | Process for preparing phosphorous acid by hydrolyzing phosphorus trichloride | |
| CN105502491A (en) | Method for preparing ultrapure zirconium oxychloride and byproduct silicon tetrachloride through zircon sand boiling chlorination | |
| CN102125851B (en) | Application method of waste copper based catalyst to preparing catalyst for preparing hydrogen from methanol | |
| WO2021114730A1 (en) | Preparation method for zinc salt of polyaspartic acid | |
| CN101531367B (en) | Process for producing silicane | |
| CN101659414B (en) | Silicomethane low-temperature production and byproduct comprehensive recycling process | |
| CN105254575A (en) | Synthetic method for sulfadiazine | |
| CN101830492A (en) | Material recycling method in calcium carbide industry | |
| CN102627306B (en) | Novel method for preparing solid aluminum sulfate by using waste | |
| CN101948400A (en) | Preparation method of methyl anthranilate | |
| CN102807536B (en) | Preparation method of 1-(2,3-dichlorophenyl) piperazine hydrochloride | |
| CN101704843B (en) | Glyphosate continuous desolventizing production process | |
| CN101514025B (en) | Method for preparing ultra pure magnesium oxide powder | |
| CN213924051U (en) | Potassium dihydrogen phosphate production system using wet-process phosphoric acid as raw material | |
| CN102351195A (en) | Process for closed circulation production of polysilicon | |
| CN105272839A (en) | Synthesis method of diphenyl ketone | |
| CN101607882A (en) | A kind of technology of producing stearate by dry method and device | |
| CN103159175A (en) | High-conversion-rate germane preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230803 Address after: 332020 Building 2, Kechuang Park, No. 66, Keji 1st Avenue, Gongqing City, Jiujiang City, Jiangxi Province Patentee after: Gongqingcheng optical Hydrogen Storage Technology Research Institute of Nanchang University Address before: No. 899, Xuefu Avenue, Honggutan New District, Nanchang, Jiangxi 330031 Patentee before: JIANGXI GUICHEN TECHNOLOGY CO.,LTD. |