METHODS AND SYSTEMS FOR PRODUCING A MOISTURE SWING SORBENT FOR CARBON DIOXIDE CAPTURE FROM AIR
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United States of America Patent
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Jul 21, 2016
app pub date -
Mar 10, 2016
filing date -
Mar 10, 2016
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Abstract
Methods and systems for producing a moisture swing sorbent for carbon dioxide capture from air are disclosed. In some embodiments, the methods include the following: providing a heterogeneous ion-exchange material; soaking the material in deionized water; washing the material in hydroxide or carbonate solutions; rinsing the material in deionized water; collecting and titrating residuals of the soaking and the washing steps into a residual solution; measuring an amount of chloride in the residual solution; repeating all of the steps if the amount of chloride measured in the residual solution is greater than zero; and drying the material with either dry nitrogen gas or air free of carbon dioxide and water.
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