Synthesis and Characterization of CaO Nanopods for High Temperature CO2 Capture

被引：58

作者：

Yang, Zeheng ^{[1
,2
]}

Zhao, Ming ^{[1
]}

Florin, Nicholas H. ^{[1
,3
]}

Harris, Andrew T. ^{[1
]}

机构：

[1] Univ Sydney, Lab Sustainable Technol, Sch Chem & Biomol Engn, Sydney, NSW 2006, Australia

[2] Hefei Univ Technol, Sch Chem Engn, Hefei 230009, Anhui, Peoples R China

[3] Univ London Imperial Coll Sci Technol & Med, Grantham Inst Climate Change, London SW7 2AZ, England

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2009年 / 48卷 / 24期

基金：

中国国家自然科学基金; 澳大利亚研究理事会;

关键词：

CONTROLLED SURFACE-STRUCTURES; HYDROPHILIC BLOCK-COPOLYMERS; CARBON-DIOXIDE CAPTURE; OXIDE ARCHITECTURES; HYDROGEN-PRODUCTION; CALCIUM-CARBONATE; CRYSTALLIZATION; SORBENTS; BIOMASS; CYCLES;

D O I：

10.1021/ie901137s

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A hollow structured CaO sorbent with high CO2 absorption capacity and good cyclic performance at high temperatures was derived from the corresponding CaCO3 precursor, which was prepared by bubbling gaseous CO2 through a Ca(OH)(2) slurry in the presence of the triblock copolymer surfactant, P123 (PEO20PPO70PEO20)Field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) images showed the novel sorbent to be comprised of nanosized platelets forming hollow particles resembling a pod of approximately 200 nm in diameter and Lip to 600 nm in length, Thermogravimetric analysis showed that the tailored sorbent had the highest CO2 absorption capacity when compared with calcines derived from precipitated CaCO3 without P123 and a commercially available CaCO3, retaining >50% CO2 absorption capacity after 50 CO2 capture-and-release cycles for carbonation temperatures from 600 to 700 degrees C.

引用

页码：10765 / 10770

页数：6

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