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US 12,540,407 B2Granted
Method for preparing gamma-butyrolactone
AssigneeCity University of Hong Kong
InventorsChun Ho Lam, Shengqin Liu, Yangxin Jin, Qi Zhu, Shan Shao
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Abstract
A method for preparing gamma-butyrolactone including converting furoic acid to the gamma-butyrolactone in an undivided cell without a mediator for paired electrolysis, including the steps of: a) electrochemically oxidizing the furoic acid to 2(5H)-furanone; and b) electrochemically reducing the 2(5H)-furanone to the gamma-butyrolactone.
Claims11
A method for preparing gamma-butyrolactone comprising the step of converting furoic acid to the gamma-butyrolactone in a separator-free undivided cell without a mediator for paired electrolysis, including the steps of:
- a) electrochemically oxidizing the furoic acid to 2(5H)-furanone;
- and
- b) electrochemically reducing the 2(5H)-furanone to the gamma-butyrolactone;
- wherein the step of converting furoic acid to the gamma-butyrolactone is carried out in the separator-free undivided cell, which includes an anode of platinum, a cathode of nickel, a counter electrode of Ag/AgCl, and a phosphate buffer solution containing about 1 mM to about 200 mM of the furoic acid, under an ambient atmosphere of 1 atm, at a pH of 3 to 6, and at a temperature of about 35° C. to about 80° C., with an applied voltage of about 1.8 V to about 2.0 V versus Ag/AgCl.
1 more element
Dependencies are inferred from the claim text.