Patent ID: 9573808
Date: 2017-02-21
CPC Classifications: C01B

Claim:
1. A method, comprising: combining an amount of water, an HCl fixing agent (FA), and a second FA, wherein the amount of water is present in an amount between 0.3 and 1.3 times the mass of the FA, inclusive, wherein the FA comprises at least one of urea and a urea derivative, and wherein the second FA comprising an amount of high surface area particles; dissolving an amount of HCl gas into the combined amount of water, FA and second FA to form an aqueous solution, wherein the second FA temporarily stores at least a portion of the HCl gas to provide time for the FA to complex with the HCl molecules, wherein the amount of HCl dissolved in the aqueous solution comprises a molar ratio of HCl:FA of between 4.0 and 0.5, inclusive, and wherein the amount of HCl comprises greater than 37% by weight of the aqueous solution, based on the total weight of the aqueous solution.