Method of making inorganic gold compound
AssigneeTripod Technology Corporation
InventorsLin Lu, Chen-Hsiang Wang, Kuei-Sheng Fan, Cheng-Ding Wang, Jim-Min Fang
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Abstract
A method of making the inorganic gold compound, such as tetrachloroauric acid, sodium tetrachloroaurate, potassium tetrachloroaurate, sodium tetracyanoaurate, and potassium tetracyanoaurate, includes the step of: treating gold with a halogen-containing oxidizing agent in a hydrochloric acid to obtain the inorganic gold compound, wherein the halogen-containing oxidizing agent excludes chlorine gas. The method of making the inorganic gold compound is simple, safe, time-effective, cost-effective, and environment-friendly, and has the advantage of high yield.
Claims16
A method of making an inorganic gold compound, the method comprising the step of:
- treating gold with a halogen-containing oxidizing agent in a hydrochloric acid to obtain the inorganic gold compound,
- wherein the halogen-containing oxidizing agent is selected from the group consisting of:
- halous acid (HXOn), halous acid salt (MXOn), oxyhalide (XpOq), and combinations thereof,
- wherein
- X is Br, or I;
- M is Na or K;
- n is an integer 2;
- p is an integer 1 or 2;
- and
- q is an integer 1, 2, 3, or 5;
- and
- wherein the halogen-containing oxidizing agent excludes chlorine gas, and the inorganic gold compound comprises tetrachloroauric acid, sodium tetrachloroaurate, or potassium tetrachloroaurate.
A method of making an inorganic gold compound, comprising the steps of:
- treating gold with a halogen-containing oxidizing agent in a hydrochloric acid to obtain an inorganic gold intermediate,
- wherein the halogen-containing oxidizing agent is selected from the group consisting of:
- halous acid (HXOn), halous acid salt (MXOn), oxyhalide (XpOq), and combinations thereof,
- wherein
- X is Br, or I;
- M is Na or K;
- n is an integer 2;
- p is an integer 1 or 2;
- and
- q is an integer 1, 2, 3, or 5;
- and
- wherein the halogen-containing oxidizing agent excludes chlorine gas, and the inorganic gold intermediate comprises tetrachloroauric acid, sodium tetrachloroaurate, or potassium tetrachloroaurate;
- and
- reacting the inorganic gold intermediate with a cyanide to give the inorganic gold compound, wherein the cyanide comprises sodium cyanide or potassium cyanide, and the inorganic gold compound comprises sodium tetracyanoaurate or potassium tetracyanoaurate.
Dependencies are inferred from the claim text.