Process for producing ammonium polythiomolybdate

Details Process for producing ammonium polythiomolybdate Process for producing ammonium polythiomolybdate

2006-07-11

2006-07-11

Silverman, Stanley S. (Department: 1754)

Chemistry of inorganic compounds

Sulfur or compound thereof

C423S517000

Reexamination Certificate

active

07074381

ABSTRACT:
A process for preparation of an ammonium polythiomolybdate or a hydrate thereof of the formula (NH4)2Mo3S13.n H2O where n is 0, 1 or 2, in which aqueous ammonium monosulfide, elemental sulfur and molybdic oxide are reacted in a sealed reactor, with hydrogen sulfide gas being fed into the reactor until the hydrogen sulfide is no longer absorbed by the reaction mixture to form a reaction product and then heating the reaction product in a sealed reactor, the concentration of ammonium monosulfide in the reaction mixture being controlled throughout the reaction such that reactor pressure does not exceed 700 kPa (100 psig).

REFERENCES:
patent: 3764649 (1973-10-01), Kurtak et al.
patent: 3876755 (1975-04-01), Kurtak et al.
patent: 4604278 (1986-08-01), Reilly et al.
patent: 5300274 (1994-04-01), Wei et al.
patent: 6953565 (2005-10-01), Wangner et al.
patent: 2005/0089462 (2005-04-01), Wangner et al.
Mueller et al., “Molybdenum-sulfur clusters”, Inorganic Syntheses, vol. 27, pp. 47-51, 1990.
Chemical Abstract accession No. 116:98146: “Studies on the triangular [molybdate-disulfido-sulfido] cluster [Mo3S13]2-: electronic structure . . . , crystal structure of (Ph4As)2[Mo3S13].2CH3CN and . . . ”, Mueller et al., published 1991.
Chemical Abstract accession No. 119:151081: “Molybdenum(IV) sulfide-disulfide complex ([MoIV3S(S2)6]2-) from amorphous molybdenum trisulfide by the reaction with hydroxide and R=0.015 structure of (NH4)2[MoIV3S(S2)6].H2O”, Mueller et al., published 1993.

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