JPS5467596A - Preparation of hexagonal plate zinc oxide crystal powder - Google Patents
Preparation of hexagonal plate zinc oxide crystal powderInfo
- Publication number
- JPS5467596A JPS5467596A JP13489277A JP13489277A JPS5467596A JP S5467596 A JPS5467596 A JP S5467596A JP 13489277 A JP13489277 A JP 13489277A JP 13489277 A JP13489277 A JP 13489277A JP S5467596 A JPS5467596 A JP S5467596A
- Authority
- JP
- Japan
- Prior art keywords
- zinc oxide
- crystal powder
- strong alkaline
- condition
- dissolved
- 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.)
- Pending
Links
Abstract
PURPOSE: For an inexpensive mass production of high-purity zinc oxide crystal powder having C face of hexagonal system, a zinc compound is dissolved in a strong alkaline solution, then zinc oxide microcrystals are synthetized by hydrothermal reaction from spontaneously generating nuclcus in a process of redeposition.
CONSTITUTION: A new process eliminates the need of inoculation and the condition of temperature gradient in high pressure container, and permits the use of a commercially available general reagent zinc oxide (average particle size about 0.3 micorns) as source material. In such a condition, a predetermined amount of zinc oxide is dissolved into a strong alkaline aqueous solution, then uniform hexagonal plate zinc oxide microcrystal is prepared by hydrothermal reaction from spontaneously generating nucleus in a process of deposition. Inclusion of 2 to 6 Li ion in the strong alkaline solution is useful to obtain more preferable crystal powder for directive ferrite source material having a ratio of width/thick (1/t) being 5 or more. Preferable preparation condition is selected such that a reaction temperature ranges from 25° to 400°C, with a pressure being 200 to 1000 atms. The resultant crystal powders have diameters of about 0.5 to 20 microns.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13489277A JPS5467596A (en) | 1977-11-09 | 1977-11-09 | Preparation of hexagonal plate zinc oxide crystal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13489277A JPS5467596A (en) | 1977-11-09 | 1977-11-09 | Preparation of hexagonal plate zinc oxide crystal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5467596A true JPS5467596A (en) | 1979-05-31 |
Family
ID=15138945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13489277A Pending JPS5467596A (en) | 1977-11-09 | 1977-11-09 | Preparation of hexagonal plate zinc oxide crystal powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5467596A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721698A (en) * | 2014-01-10 | 2014-04-16 | 中国天辰工程有限公司 | Zinc oxide catalyst of ordered layered structure and preparation method thereof |
| JP2017141189A (en) * | 2016-02-10 | 2017-08-17 | 学校法人同志社 | Method for producing zinc oxide powder having antibacterial property |
| WO2018230325A1 (en) * | 2017-06-15 | 2018-12-20 | ライオン株式会社 | Composition for use in oral cavity |
| WO2020215244A1 (en) * | 2019-04-24 | 2020-10-29 | 香港纺织及成衣研发中心有限公司 | Zinc oxide microcrystalline fiber and low-temperature template-free hydrothermal synthesis method therefor |
-
1977
- 1977-11-09 JP JP13489277A patent/JPS5467596A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721698A (en) * | 2014-01-10 | 2014-04-16 | 中国天辰工程有限公司 | Zinc oxide catalyst of ordered layered structure and preparation method thereof |
| JP2017141189A (en) * | 2016-02-10 | 2017-08-17 | 学校法人同志社 | Method for producing zinc oxide powder having antibacterial property |
| WO2018230325A1 (en) * | 2017-06-15 | 2018-12-20 | ライオン株式会社 | Composition for use in oral cavity |
| CN110198699A (en) * | 2017-06-15 | 2019-09-03 | 狮王株式会社 | Composition for oral cavity |
| WO2020215244A1 (en) * | 2019-04-24 | 2020-10-29 | 香港纺织及成衣研发中心有限公司 | Zinc oxide microcrystalline fiber and low-temperature template-free hydrothermal synthesis method therefor |
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