globalchange  > 科学计划与规划
DOI: 10.1002/2016GL070834
论文题名:
Experimental evidence of reaction-induced fracturing during olivine carbonation
作者: Zhu W.; Fusseis F.; Lisabeth H.; Xing T.; Xiao X.; De Andrade V.; Karato S.-I.
刊名: Geophysical Research Letters
ISSN: 0094-8613
EISSN: 1944-8344
出版年: 2016
卷: 43, 期:18
起始页码: 9535
结束页码: 9543
语种: 英语
英文关键词: CO2 sequestration ; fluid-rock interaction ; microstructure evolution ; mineral carbonation ; reaction-induced fracturing ; time-resolved X-ray microtomography
Scopus关键词: Aggregates ; Carbon dioxide ; Carbonates ; Carbonation ; Cracks ; Microstructure ; Olivine ; Silicate minerals ; Silicates ; Sodium bicarbonate ; Tomography ; Weathering ; Bicarbonate solution ; Experimental evidence ; Fluid-rock interaction ; Micro-structure evolutions ; Microtomographic images ; Mineral carbonation ; Reservoir conditions ; X ray microtomography ; Minerals
英文摘要: Mineral carbonation, a process that binds CO2 in the form of carbonates by silicate weathering, is widespread on the Earth's surface. Because of the abundance of silicate rocks and the permanence of the carbonated solids, sequestering CO2 via mineral carbonation has generated lots of interests. However, it is unclear how the fluid-rock reaction proceeds to completion in spite of an increasing solid volume. We conducted a mineral carbonation experiment in which a sintered olivine aggregate reacted with a sodium bicarbonate solution at reservoir conditions. Time-resolved synchrotron X-ray microtomographic images show cracks in polygonal patterns arising in the surface layers and propagating into the interior of the olivine aggregate. The nanotomography data reveal that the incipient cracks intersect at right angles. We infer that stretching due to nonuniform volume expansion generates polygonal cracking of the surfaces. Our data shed new lights on the processes that control hydration and carbonation of peridotite. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988867586&doi=10.1002%2f2016GL070834&partnerID=40&md5=e46de36fe046e1ef0fc8d4dacc5f5286
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9576
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Geology, University of Maryland, College Park, MD, United States

Recommended Citation:
Zhu W.,Fusseis F.,Lisabeth H.,et al. Experimental evidence of reaction-induced fracturing during olivine carbonation[J]. Geophysical Research Letters,2016-01-01,43(18).
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