US1379387A - Manufacture of oxids of nitrogen - Google Patents
Manufacture of oxids of nitrogen Download PDFInfo
- Publication number
- US1379387A US1379387A US10627A US1062715A US1379387A US 1379387 A US1379387 A US 1379387A US 10627 A US10627 A US 10627A US 1062715 A US1062715 A US 1062715A US 1379387 A US1379387 A US 1379387A
- Authority
- US
- United States
- Prior art keywords
- oxids
- nitrogen
- lumps
- pieces
- manufacture
- 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 - Lifetime
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title description 12
- 229910052757 nitrogen Inorganic materials 0.000 title description 6
- 238000004519 manufacturing process Methods 0.000 title description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- -1 for instance Chemical class 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 1
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
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
- C01B21/265—Preparation by catalytic or non-catalytic oxidation of ammonia characterised by the catalyst
Definitions
- CARL BOSCH ALWIN MITTASCH, AND cnms'rorn BECK, or LUDWIGSHAFEN-ON-THEJ RHINE, GERMANY, ASSIGNORS, BY mnsnr. ssrenmmrrs, TO THE CHEMIQAL FOUNDATION, me, A CORPORATION or DELAWARE.
- the size. and shape of the pieces, or lumps may vary, for instance, according to the width of the contact tube, or furnace, and it is often advantageous to heat the pieces, or lumps, or otherwise treat them before use so that no sintering, or local fusion, of the surface, with consequent formation of irregular spaces, takes place in the. contact tube, or furnace.
- the pieces, or lumps may preferably contain 30 per cent.
- an oxid of a metal of the iron group or of a mixture of more than one of the said oxids may be dense or porous, it being particularly advantageous in the former case to employ pieces, or lumps, produced by breaking up a mass obtained by allowing an oxidized melt to solidify.
- a suitable stable contact mass may be obtained by burning pure iron powder in a current of oxygen, so that a molten oxid is produced, and then breaking up the solidified mass into pieces, or lumps, of about the size of a pea, or millet or still larger.
- Use can, however, be made of other pieces, or lumps, such, for instance, as those obtained by breaking up sufiiciently pure Application filed February 25, 1915. Serial No. 10,627.
- chromium, or of uranium, or a mixture of su-chhydroxids may be precipitated by ammonia, or ammonium carbonate, or soda, from a solution of a suitable salt, or suitable salts, for instance, nitrates, or sulfates, and, after being well washed and sufliciently deprived of water, the precipitate can be pressed to form pieces, or lumps; or a part of the washed hydroxid ma be dried, at say about 250 centigrade, t en intimately mixed with the remaining damp portion and made into pieces, or lumps, of any desired shape such, for instance, as cubes, cylinders, spheres, or'the like.
- the pieces, or lumps are preferably heated, to say from 500, to 700, centigrade before being used.
- the length of the layer of the contact mass, and the velocity of the gases, and the temperature employed, mayvary consider- 1 ably.
- Compounds which in uriously affect the catalytic action should not be present taining amolten and again solidified oxid of a metal of the iron group.
- a process of producing oxide of nitrogen which comprises passing a, mixture of ammonia, and oxygen containing gas at an elevated-temperature over a catalyst containing a molten and again solidified oxid of a metal of the iron group.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Description
UNITED STATES PATENT OFFICE.
CARL BOSCH, ALWIN MITTASCH, AND cnms'rorn BECK, or LUDWIGSHAFEN-ON-THEJ RHINE, GERMANY, ASSIGNORS, BY mnsnr. ssrenmmrrs, TO THE CHEMIQAL FOUNDATION, me, A CORPORATION or DELAWARE.
MANUFACTURE OF OXIIDS OF NITROGEN.
Patented May 24, 1921.
I --d 1,379 391 Specification of Letters Patent.
No Drawing.
To all whom it may concern.
Be it known that we, CARL Boson, ALWIN MITTAsoH, and CHIus'rorH BECK, citizens of the German Empire, residing at Ludwigshafen-on-the-Rhine, Germany, have invented new and useful Improvements in the Manufacture of Oxids of Nitrogen, of which the following is a specification.
It has been proposed to convert ammonia into oxids of nitrogen, or nitric acid, by passing ammonia together with an oxygencontaining gas, such as air or oxygen, at .a raised temperature, over oxide of the metals of the iron group, but the results hitherto obtained have varied considerably and have been generall unsatisfactory.
We have ound that we may carry out the manufacture of oxids of nitrogen by the catalytic oxidation of ammonia in a regular manner and with good yields by employing the oxid, or oxide, or mixtures of the oxids of the metals of the iron group, in separate pieces, or lumps, of which a sufficiently deep layer should be used. The size. and shape of the pieces, or lumps, may vary, for instance, according to the width of the contact tube, or furnace, and it is often advantageous to heat the pieces, or lumps, or otherwise treat them before use so that no sintering, or local fusion, of the surface, with consequent formation of irregular spaces, takes place in the. contact tube, or furnace. The pieces, or lumps, may preferably contain 30 per cent. or more of an oxid of a metal of the iron group or of a mixture of more than one of the said oxids and may be dense or porous, it being particularly advantageous in the former case to employ pieces, or lumps, produced by breaking up a mass obtained by allowing an oxidized melt to solidify. Or a suitable stable contact mass may be obtained by burning pure iron powder in a current of oxygen, so that a molten oxid is produced, and then breaking up the solidified mass into pieces, or lumps, of about the size of a pea, or millet or still larger. Use can, however, be made of other pieces, or lumps, such, for instance, as those obtained by breaking up sufiiciently pure Application filed February 25, 1915. Serial No. 10,627.
stance, a hydroxid of iron, of manganese, of
chromium, or of uranium, or a mixture of su-chhydroxids, may be precipitated by ammonia, or ammonium carbonate, or soda, from a solution of a suitable salt, or suitable salts, for instance, nitrates, or sulfates, and, after being well washed and sufliciently deprived of water, the precipitate can be pressed to form pieces, or lumps; or a part of the washed hydroxid ma be dried, at say about 250 centigrade, t en intimately mixed with the remaining damp portion and made into pieces, or lumps, of any desired shape such, for instance, as cubes, cylinders, spheres, or'the like. The pieces, or lumps, are preferably heated, to say from 500, to 700, centigrade before being used. We may also startfrom metallic pieces, or lumps, for instance, from a number of small spheres, or the like, of pure iron, which may be placed in the contact tube, or furnace, elther without treatment, or after being superficially oxidized.
The length of the layer of the contact mass, and the velocity of the gases, and the temperature employed, mayvary consider- 1 ably. Compounds which in uriously affect the catalytic action should not be present taining amolten and again solidified oxid of a metal of the iron group.
2. A process of producing oxide of nitrogen which comprises passing a, mixture of ammonia, and oxygen containing gas at an elevated-temperature over a catalyst containing a molten and again solidified oxid of a metal of the iron group. 1
In testimony whereof We have hereunrboset our hands in the presence of two sub- 10 scribing Witnesses.
CARL BCSCH. ALVJIN nHTTASC-H. CHRISTUPH BECK. iVitnesses:
ARTHUR DENONVILLE, JoHANNEs FEHMEL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10627A US1379387A (en) | 1915-02-25 | 1915-02-25 | Manufacture of oxids of nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10627A US1379387A (en) | 1915-02-25 | 1915-02-25 | Manufacture of oxids of nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1379387A true US1379387A (en) | 1921-05-24 |
Family
ID=21746611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10627A Expired - Lifetime US1379387A (en) | 1915-02-25 | 1915-02-25 | Manufacture of oxids of nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1379387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2565977A (en) * | 1948-05-12 | 1951-08-28 | Standard Oil Dev Co | Process for the preparation of catalysts for the conversion of carbon oxides with hydrogen |
-
1915
- 1915-02-25 US US10627A patent/US1379387A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2565977A (en) * | 1948-05-12 | 1951-08-28 | Standard Oil Dev Co | Process for the preparation of catalysts for the conversion of carbon oxides with hydrogen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1366176A (en) | Treatment or purification of mixtures of hydrogen and carbon monoxid for the separation therffrom of the latter | |
| US1379387A (en) | Manufacture of oxids of nitrogen | |
| US2836570A (en) | Catalyst stones for the decomposition of concentrated hydrogen peroxide | |
| US1207802A (en) | Producing aromatic amins and catalysts therefor. | |
| GB191227955A (en) | Improvements in, or connected with, the Manufacture of Hydrogen. | |
| US1207708A (en) | Manufacture of oxids of nitrogen. | |
| US1128804A (en) | Process of producing hydrogen. | |
| US1399807A (en) | Catalyzer for and process of producting oxids of nitrogen | |
| US1113096A (en) | Process of producing hydrogen. | |
| US1919005A (en) | Process for the oxidation of ammonia and catalyst therefor | |
| US1115776A (en) | Producing hydrogen. | |
| US1113097A (en) | Process of producing hydrogen. | |
| USRE19953E (en) | Process of manufacturing nitrous | |
| US1555505A (en) | Catalysts and process of producing the same | |
| US1618004A (en) | Catalyst for ammonia synthesis | |
| US1391147A (en) | Process of synthesizing titanium-nitrogen compounds | |
| US1207707A (en) | Manufacture of oxids of nitrogen. | |
| US2578800A (en) | Stabilization of pyrophoric iron | |
| US1225755A (en) | Catalytic production of ammonia. | |
| US1216933A (en) | Hydrogenization and dehydrogenization of carbon compounds. | |
| JPS6071037A (en) | Preparation of fine powder | |
| US1510598A (en) | Catalyst and process of producing the same | |
| US1025426A (en) | Article composed essentially of titanium and silver and method of producing the same. | |
| Bucher | The Fixation of Nitrogen. | |
| US2492986A (en) | Composition for producing carbon dioxide from hydrogen and carbon containing compounds, and the process for producing the same |