Limestone can be used to generate a sorbent suitable for CO₂ capture via the reversible carbonation of CaO, in a process often referred to as calcium looping. This sorbent loses reactivity to CO₂ upon cycles of carbonation and calcination (the reverse of carbonation). Several methods of improving sorbent performance have previously been investigated, including by generating synthetic sorbents or simple doping. Here, we demonstrate, for the first time, that sorbent performance can be enhanced by simple doping with seawater. This effect is consistent across five different limestones investigated and can be enhanced by steam addition. This would be a simple and inexpensive method for improving sorbent performance in calcium looping processes. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

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通过掺入海水来增强基于CaO的吸附剂以捕集CO2

在通常被称为钙环化的过程中，石灰石可用于通过CaO的可逆碳酸化生成适合于CO ₂捕集的吸附剂。该吸附剂失去与CO _2的反应性在碳酸化和煅烧的循环中（碳酸化的逆过程）。先前已经研究了几种提高吸附剂性能的方法，包括通过生成合成吸附剂或简单的掺杂。在这里，我们首次证明了通过简单的海水掺杂可以提高吸附剂的性能。在研究的五种不同石灰石中，这种效果是一致的，可以通过添加蒸汽来增强。这将是一种简单而廉价的方法，用于改善钙循环过程中的吸附剂性能。©2020年化学工业协会和John Wiley＆Sons，Ltd.