GB510889A - Improvements in and relating to the production of nitrous oxide - Google Patents

Improvements in and relating to the production of nitrous oxide

Info

Publication number
GB510889A
GB510889A GB409438A GB409438A GB510889A GB 510889 A GB510889 A GB 510889A GB 409438 A GB409438 A GB 409438A GB 409438 A GB409438 A GB 409438A GB 510889 A GB510889 A GB 510889A
Authority
GB
United Kingdom
Prior art keywords
ammonium
nitrate
acid
ammonium nitrate
phosphate
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
Application number
GB409438A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB409438A priority Critical patent/GB510889A/en
Publication of GB510889A publication Critical patent/GB510889A/en
Expired legal-status Critical Current

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
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/22—Nitrous oxide (N2O)

Abstract

510,889. Nitrous oxide. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E. I.). Feb. 9,1938, No. 4094. [Class 1 (ii)] Nitrous cxide is obtained by heating ammonium nitrate to its decomposition temperature in the presence of a solid compound of phosphorus, arsenic, molybdenum, silver or manganese in proportion sufficient to maintain the presence of a small ratio of the compound to the ammonium nitrate. The compound is preferably present in amounts between 0.001 and 2 per cent. by weight. The compounds specified are ortho-phosphoric acid, ammonium dihydrogen orthophosphate, ammonium metaphosphate, diammonium pyrophosphate, trisodium phosphate, disodium phosphate, monopotassium phosphate, barium pyrophosphate, barium hypophosphate, calcium metaphosphate, calcium hypophosphate, calcium pyrophosphate, magnesium acid orthophosphate, phosphorus pentoxide, phosphorus trioxide, iron phosphate, cobalt phosphate, phosphomolybdic acid, ammonium molybdate, arsenous oxide, arsenic oxide, arsenic acid, arsenous acid, sodium arsenite, sodium arsenate, potassium arsenate, ammonium arsenite, calcium arsenate, silver nitrate, and manganous nitrate. Preferably the reaction is conducted so as to maintain a constant ratio between the ammonium nitrate being decomposed and the amount of catalyst present, e.g., by starting with a mixture containing a given amount of catalyst and adding fresh ammonium nitrate continuously or intermittently at the same rate as that at which it is decomposed. The ammonium nitrate may be added in either the solid or molten condition. The ammonium nitrate may be replaced by a mixture of sodium nitrate and ammonium sulphate.
GB409438A 1938-02-09 1938-02-09 Improvements in and relating to the production of nitrous oxide Expired GB510889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB409438A GB510889A (en) 1938-02-09 1938-02-09 Improvements in and relating to the production of nitrous oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB409438A GB510889A (en) 1938-02-09 1938-02-09 Improvements in and relating to the production of nitrous oxide

Publications (1)

Publication Number Publication Date
GB510889A true GB510889A (en) 1939-08-09

Family

ID=9770626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB409438A Expired GB510889A (en) 1938-02-09 1938-02-09 Improvements in and relating to the production of nitrous oxide

Country Status (1)

Country Link
GB (1) GB510889A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376068A1 (en) * 1976-12-30 1978-07-28 Eotvos Lorand Tudomanyegyetem PROCESS FOR PREPARING THE NITROGEN PROTOXIDE
CN111547696A (en) * 2020-05-15 2020-08-18 上海太洋科技有限公司 Preparation method of optical-grade yttrium metaphosphate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376068A1 (en) * 1976-12-30 1978-07-28 Eotvos Lorand Tudomanyegyetem PROCESS FOR PREPARING THE NITROGEN PROTOXIDE
CN111547696A (en) * 2020-05-15 2020-08-18 上海太洋科技有限公司 Preparation method of optical-grade yttrium metaphosphate

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