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US 11,441,230 B2Granted
Preparation of disulfide corrosion inhibitors by electrochemical methods
AssigneeChampionX USA Inc.
InventorsRyan Matthew Harrington, Yingrui Zhang
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Abstract
A method of synthesizing a disulfide compound is provided. The method may include providing an electrochemical cell that has a compartment, an anode, and a cathode. The compartment may contain a solution of one or more thiol compounds, a catalyst, and a solvent. The method may also include providing an electrical current to the electrochemical cell and converting the one or more thiol compounds into the disulfide compound.
Claims19
A method of synthesizing 2,2′-dithiodiethanol, comprising:
- providing an electrochemical cell comprising a compartment, an anode, and a cathode, wherein the compartment contains a solution comprising 2-mercaptoethanol, a catalyst, and a solvent;
- providing an electrical current to the electrochemical cell;
- and
- converting the 2-mercaptoethanol into 2,2′-dithiodiethanol in the solution,
- wherein the 2-mercaptoethanol has a concentration in the solution ranging from about 50 to about 90 percent by weight.
2 more elements
A method of synthesizing a compound of formula (I), comprising:
- providing an electrochemical cell comprising a compartment, an anode, and a cathode, wherein the compartment contains a solution comprising a compound of formula (II), a compound of formula (III), a catalyst, and a solvent;
- R1—SH (II)
- R2—SH (III)
- providing an electrical current to the electrochemical cell;
- and
- converting the compound of formula (II) and the compound of formula (III) into the compound of formula (I) in the solution,
- where R1 and R2 are independently selected from a substituted or unsubstituted C1-C12 alkyl, a substituted or unsubstituted C2-C12 alkenyl, a substituted or unsubstituted C2-C12 alkynyl, a substituted or unsubstituted C4-C6 aryl, a substituted or unsubstituted C4-C6 heteroaryl, a substituted or unsubstituted C4-C6 heterocyclyl, or a substituted or unsubstituted C4-C6 cycloalkyl,
- wherein a combined concentration of the compound of formula (II) and the compound of formula (III) in the solution ranges from about 50 to about 90 percent by weight.
5 more elements
A method of synthesizing a corrosion inhibitor, comprising:
- providing an electrochemical cell comprising a compartment, an anode, and a cathode, wherein the compartment contains a solution comprising a thiol, a catalyst, and a solvent;
- providing an electrical current to the electrochemical cell;
- and
- converting the thiol into a disulfide in the solution, wherein the disulfide is a corrosion inhibitor,
- wherein the thiol has a concentration in the solution ranging from about 50 to about 90 percent by weight.
2 more elements
Dependencies are inferred from the claim text.