JPS56129614A - Manufacture of fine chromium oxide - Google Patents
Manufacture of fine chromium oxideInfo
- Publication number
- JPS56129614A JPS56129614A JP3034680A JP3034680A JPS56129614A JP S56129614 A JPS56129614 A JP S56129614A JP 3034680 A JP3034680 A JP 3034680A JP 3034680 A JP3034680 A JP 3034680A JP S56129614 A JPS56129614 A JP S56129614A
- Authority
- JP
- Japan
- Prior art keywords
- chromium oxide
- chromate
- manufacture
- contg
- alkali
- 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
Abstract
PURPOSE: To manufacture fine chromium oxide having low crystallinity and suitable for use as a ceramic material by adding a mineral acid and an N-contg. compound to an alkali (di)chromate followed by thermal decomposition under the specified condition and washing said material.
CONSTITUTION: To an alkali (di)chromate are added a mineral acid such as sulfuric acid or hydrochloric acid by ≥0.1mol/mol of chromate as CrO3 and an N- contg. compound such as (NH4)2CO3 or alkylurea, and they are mixed. This mixture is thermally decomposed at a relatively low temp. (≤400°C) above the decomposition temp.,freed of foreign salts by washing, dried, and pulverized to obtain chromium oxide having ≤0.2° of crystallinity and 4W300m2/g specific surface area.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3034680A JPS603010B2 (en) | 1980-03-12 | 1980-03-12 | Manufacturing method of fine chromium oxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3034680A JPS603010B2 (en) | 1980-03-12 | 1980-03-12 | Manufacturing method of fine chromium oxide |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56129614A true JPS56129614A (en) | 1981-10-09 |
JPS603010B2 JPS603010B2 (en) | 1985-01-25 |
Family
ID=12301271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3034680A Expired JPS603010B2 (en) | 1980-03-12 | 1980-03-12 | Manufacturing method of fine chromium oxide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS603010B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003054930A (en) * | 2001-08-21 | 2003-02-26 | National Institute Of Advanced Industrial & Technology | Chromium-containing oxide, production method therefor and its use |
CN110655109A (en) * | 2019-10-14 | 2020-01-07 | 宁夏中科欧德科技有限公司 | Preparation process of high-purity chromium sesquioxide |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01139522U (en) * | 1988-03-14 | 1989-09-25 | ||
JPH058101Y2 (en) * | 1988-12-19 | 1993-03-01 |
-
1980
- 1980-03-12 JP JP3034680A patent/JPS603010B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003054930A (en) * | 2001-08-21 | 2003-02-26 | National Institute Of Advanced Industrial & Technology | Chromium-containing oxide, production method therefor and its use |
CN110655109A (en) * | 2019-10-14 | 2020-01-07 | 宁夏中科欧德科技有限公司 | Preparation process of high-purity chromium sesquioxide |
Also Published As
Publication number | Publication date |
---|---|
JPS603010B2 (en) | 1985-01-25 |
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