Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1980-07-16
1981-12-29
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252 25, 252428, 252439, 252518, 423509, 423561R, 585469, 501 40, B01J 3132, B01J 2702, C01B 1900, C01B 1700
Patent
active
043081711
ABSTRACT:
Finely divided, small particle (0.1 micron or less) small crystallite (about 50 A.times.100 A or less) chalcogenides of manganese, rhenium and technetium are described. These compositions are prepared by mixing the absence of an aqueous solvent, a manganese, rhenium or technetium salt with a source of chalcogenide yielding a precipitate. The manganese, rhenium or technetium salt and the source of chalcogen can be mixed either neat or in the presence of a nonaqueous aprotic solvent. The precipitate which results before removal of the anion salt is a finely divided product. In the case of rhenium dichalcogenide the product possesses a layered structure. The anion salt may be removed by any technique common to the art, pumping under vacuum being one such technique, washing with a suitable solvent being another.
A method is described for the preparation of di- and poly-chalcogenides of the formula MX.sub.y wherein M is a metal selected from the group consisting of mangangese, rhenium and technetium, X is a chalcogen selected from the group consisting of sulfur, selenium, tellurium and mixtures thereof, and y is a number ranging from about 1.5 to about 4, preferably about 2, comprising the low temperature, nonaqueous precipitation of said MX.sub.y compounds from mixtures of the salts of said manganese, rhenium and technetium. Said precipitation occurs in the absence of aqueous solvents. The process of the instant invention permits the preparation of materials uncontaminated by water, oxygen or hydrolysis products.
REFERENCES:
patent: 1948408 (1934-02-01), Watts et al.
patent: 2145657 (1939-01-01), Ipatieff et al.
patent: 2354742 (1949-08-01), Cunningham
patent: 2448740 (1948-09-01), Schwartz
patent: 2647858 (1953-08-01), Weisz
patent: 2654696 (1953-10-01), Laporte
patent: 2805917 (1957-09-01), Nitsche
patent: 3026175 (1962-03-01), Kulifay
patent: 3140994 (1964-07-01), Derr, Jr. et al.
patent: 3161585 (1964-12-01), Gleim et al.
patent: 3252895 (0000-05-01), Gleim
patent: 3291720 (1966-12-01), Dobres et al.
patent: 3306701 (1967-02-01), Anderson et al.
patent: 3320157 (1967-05-01), Arey, Jr. et al.
patent: 3331769 (1967-07-01), Gatsis
patent: 3336386 (1967-08-01), Dovell et al.
patent: 3338822 (1967-08-01), Groszek et al.
patent: 3453217 (1969-07-01), Kozlowski et al.
patent: 3509213 (1970-04-01), Greenfield et al.
patent: 3538161 (1970-11-01), Dovel
patent: 3538162 (1970-11-01), Dovell
patent: 3622497 (1971-11-01), Gleim
patent: 3688109 (1972-08-01), Gamble
patent: 3714339 (1973-01-01), Vecht
patent: 3763043 (1973-10-01), Thomson
patent: 3766064 (1973-10-01), Gamble
patent: 3793081 (1974-02-01), Varga
patent: 3840389 (1974-10-01), Kobylinski
patent: 4009052 (1977-02-01), Whittingham
patent: 4055630 (1977-10-01), McCoy et al.
Chem. Abs.-vol. 28 (1934), #2634.
"Colloidal Sulpher Compounds of Ruthenium", F.M. Jaeger & J. H. De Boer, Proc. Acad. Sci. Amster, (1920), pp. 95-102.
"Preparation & Crystallinity of Molybdenum & Tungsten Compounds", J. C. Wildervanck & F. Jellinck-Zeitshrift Fur Anorganishe Und Allgemene Chemie Band 328 (1964).
"The Synthesis & Characterization of Inorganic Compounds", W. J. Jolly, Prentice Hall Inc., N.J., Chapt. 5, pp. 97-121.
Chem. Abs., vol. 85 (1976): 152239-C, Larchev V.I. & Popva S.V.
"The Synthesis & Characterization of Inorganic Compounds", Prentice-Hall Inc.; W. L. Jolly-Chapter 5-Solvents.
Extractive Metalurgy (vol. 2), Habashi Science Publishers-Paris-p. 216.
4,208,394 06001980 Chianelli 423 561
"Preparation of Metal Sulphides from Organic Solvents", Lutz & Haeuseler Z. Naturforsch 26 b, 1096-1097 (1971).
"Preparation of Chromium Sulphide from Organic Solvents", Lutz, Haeuseler and Becker, Z. Naturforsch 29 b, 385-388 (1974).
Die Darstellung von Seleniden aus Selenuasserstuff und Metallsalzlosungen Moser und Atynski, Monatsh 54, pp. 235-250 (1925).
Formation of Chromium (III) Sulfide, Veller., Ukrain Chem. Zhur 11 (8) pp. 23-27 (1936).
"A Study in Tellurides", Tibbals, J. Am. Chem. Soc. 31, pp. 902-913 (1909).
"Application of Selenium Salts in Inorganic Analysis", Taimni and Rakshpal, Analytica Chemica. Acta 25, pp. 438-447 (1961).
Comprehensive Treatise on Inorganic and Theoretical Chemistry, vol. IX, pp. 814-818, Mellor.
"Die Darstellung von Metalltelluriden aus Tellurwasserstuff and Metallsalzlosungen", Brukl, Monatsh 45, pp. 471-484 (1925).
"Comprehensive Treatise on Inorganic and Theoretical Chemistry, vol. VII, Mellor, pp. 90-91.
"La Combinaison RuS.sub.2, et Sa Structure", DeJong and Haog, Rec. Trav. Chim. 46, pp. 173-176 (1927).
Chianelli Russell R.
Dines Martin B.
Pecoraro Theresa A.
Allocca Joseph J.
Exxon Research & Engineering Co.
Konopka P. E.
LandOfFree
Method of preparing di and poly chalcogenides of group VIIb by l does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of preparing di and poly chalcogenides of group VIIb by l, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing di and poly chalcogenides of group VIIb by l will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1017739