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论文类型：期刊论文

发表时间：2014-09-15

发表刊物：MATERIALS LETTERS

收录刊物：SCIE、EI、Scopus

卷号：131

页面范围：206-209

ISSN号：0167-577X

关键字：Brucite; Basic magnesium carbonate; Magnesium carbonate; Microstructured materials; Flue gas absorption technology

摘要：Basic magnesium carbonate/magnesium carbonate microstructured materials have been synthesized as by-products in a simulative flue gas absorption technology through a direct carbonation of Mg-based (brucite) slurry. A probable carbonation mechanism from brucite to magnesite is proposed via a couple of gas-solid reaction pathways. Experimental results demonstrate that the reactions undergo transitional basic magnesium carbonate carnations constructed by microflakes and then development of rhombohedral magnesium carbonate microstructured crystals with further incorporation of carbon dioxide. Furthermore, the carbonation parameters of brucite are also studied in detail. Since the novel approach is simple and has a high additional value in combination with the flue gas absorption technology, the process could bring significant progress for residue treatment in chemical CO2 capture. (C) 2014 Elsevier B.V. All rights reserved.