School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia.
Environ Sci Technol. 2012 Feb 7;46(3):1932-9. doi: 10.1021/es203525y. Epub 2012 Jan 24.
Three types of sorbent were fabricated using various calcium and support precursors via a simple mixing method, in order to develop highly effective, durable, and cheap CaO-based sorbents suitable for CO(2) capture. The sorption performance and morphology of the sorbents were measured in a thermogravimetric analyzer and a scanning electron microscopy, respectively. The experimental results indicate that cement is a promising low-cost support precursor for contributing to the enhancement of cyclic CO(2) sorption capacity, especially when organometallic calcium precursors were used. A sorbent (with 75% CaO content) made from calcium l-lactate hydrate and cement showed the highest CO(2) sorption capacity of 0.36 g of CO(2)/g of sorbent and its capacity decreased only slightly after 70 cycles of carbonation and calcination.
三种类型的吸附剂是通过简单的混合方法使用各种钙和载体前体制备的，目的是开发适用于 CO(2)捕获的高效、持久和廉价的基于 CaO 的吸附剂。吸附剂的吸附性能和形态分别在热重分析仪和扫描电子显微镜中进行了测量。实验结果表明，水泥是一种很有前途的低成本载体前体，可以提高循环 CO(2)吸附容量，特别是在使用有机金属钙前体时。由水合 L-乳酸钙和水泥制成的吸附剂（含有 75%的 CaO）具有最高的 CO(2)吸附容量，达到 0.36 g 的 CO(2)/g 的吸附剂，并且在 70 次碳化和煅烧循环后其容量仅略有下降。
