GB772670A - Improvements in or relating to preparation of hydroxylamine - Google Patents
Improvements in or relating to preparation of hydroxylamineInfo
- Publication number
- GB772670A GB772670A GB19886/54A GB1988654A GB772670A GB 772670 A GB772670 A GB 772670A GB 19886/54 A GB19886/54 A GB 19886/54A GB 1988654 A GB1988654 A GB 1988654A GB 772670 A GB772670 A GB 772670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- per cent
- nitric acid
- employed
- psig
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/14—Hydroxylamine; Salts thereof
- C01B21/1409—Preparation
- C01B21/1418—Preparation by catalytic reduction of nitrogen oxides or nitrates with hydrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Hydroxylamine is produced by the reduction of aqueous nitric acid, e.g. up to 40 per cent acid, with hydrogen in the presence of rhodium as catalyst. The catalyst may be supported on an acid insoluble carrier, e.g. activated carbon, alumina, asbestos, silica gel, quartz, heat and chemical resistant glass, or kieselguhr. The carrier may be in powdered granular or pellet form, 5 per cent rhodium on active carbon is preferred. An additional acid (except hydrochloric acid) may be present, e.g. formic, acetic, phosphoric or sulphuric acid. The mole ratio of sulphuric acid to nitric acid may be between 0.5 and 4 to 1. The aqueous nitric acid may contain methanol. In the absence of additional acid the maximum concentration of nitric acid is 24.5 per cent at 50 p.s.i.g. and room temperature, and 40 per cent at 0 DEG C. Pressures of up to 4500 psig may be employed. Using sulphuric acid pressures of 0-500 psig are preferred. Room or cooling water temperature is preferably employed, but a temperature of up to 125 DEG C. may be employed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US772670XA | 1953-08-24 | 1953-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB772670A true GB772670A (en) | 1957-04-17 |
Family
ID=22137069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19886/54A Expired GB772670A (en) | 1953-08-24 | 1954-07-07 | Improvements in or relating to preparation of hydroxylamine |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB772670A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236685A (en) * | 1991-08-02 | 1993-08-17 | Basf Aktiengesellschaft | Preparation of hydroxylammonium salts |
-
1954
- 1954-07-07 GB GB19886/54A patent/GB772670A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236685A (en) * | 1991-08-02 | 1993-08-17 | Basf Aktiengesellschaft | Preparation of hydroxylammonium salts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1103125A (en) | Process for the manufacture of vinyl acetate | |
| GB804036A (en) | A process for the manufacture of a sulphanilamide of the isoxazole series | |
| GB1116585A (en) | Treatment of gases | |
| ES439894A1 (en) | Process for preparing glycolic acid and its polymers | |
| KR930007801A (en) | Method of producing hydrogen peroxide | |
| GB459180A (en) | Improvements in or relating to the manufacture of hydrocyanic acid | |
| GB772670A (en) | Improvements in or relating to preparation of hydroxylamine | |
| GB772831A (en) | Improvements in or relating to preparation of hydroxylamine | |
| GB712467A (en) | Improvements in the production of hydroxylamines | |
| GB1393428A (en) | Process for the preparation of 4-chloro-2,5-dimethoxyaniline | |
| GB907154A (en) | Improved process for the catalytic reduction of dinitrotoluenes | |
| GB1009024A (en) | Process for preparing aminophenols | |
| GB775912A (en) | Isomerisation of maleic acid to fumaric acid | |
| GB972609A (en) | Improvements in or relating to the catalytic decomposition of peroxides | |
| GB777095A (en) | Process for the production of magnesium hydride | |
| GB723081A (en) | Improvements in or relating to a process for the production of hydrogen cyanide | |
| GB1090776A (en) | Improvements in the purification of ethylene | |
| GB844971A (en) | Improvements in and relating to the purification of gases or gaseous mixtures | |
| GB1101726A (en) | Process for the manufacture of vinyl acetate | |
| GB952718A (en) | Process for producing acetaldehyde | |
| GB1025813A (en) | Production of mannitol/sorbitol | |
| GB1010068A (en) | Production of acetic acid | |
| GB866816A (en) | Improvements in or relating to the removal of acetylene from air | |
| GB900357A (en) | Process for the manufacture of adipo-dinitrile | |
| KR900000332A (en) | Method of manufacturing oxime |