干旱区生态环境知识资源中心(Arid): Microwave assisted acid treatment of kerolitic clays from the Neogene Madrid Basin (Spain) and its use in CO2 capture processes

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DOI	10.1016/j.micromeso.2019.109749
	Microwave assisted acid treatment of kerolitic clays from the Neogene Madrid Basin (Spain) and its use in CO2 capture processes
	Franco, Francisco 1; Antonio Cecilia, Juan 1; Pozo, Manuel 2; Pardo, Laura 1; Bellido, Eva 3; Garcia-Sancho, Cristina 1
通讯作者	Antonio Cecilia, Juan
来源期刊	MICROPOROUS AND MESOPOROUS MATERIALS
ISSN	1387-1811
EISSN	1873-3093
出版年	2020
卷号	292
英文摘要	The effect of the microwave assisted acid treatment on five kerolite-Mg-stevensite samples from the Neogene Madrid Basin was studied. Samples with lower amount of kerolite are more prone to suffer chemical modifications thought the microwave assisted acid treatment than the kerolite-rich clay ones by the partial leaching of Mg2+-species located in the octahedral sheet. This fact supposes that two structures with similar chemical compositions (kerolite and stevensite) display a different response to the microwave assisted acid treatment. Thus, Mg-smectite with interlayer cations, such as stevensite, are more labile to the acid treatment than kerolite, which does not have interlayer cations in such a way that acid digestion of stevensite occurs simultaneously at the edges of particles and within the interlayer space, whereas in the case of kerolite, it occurs exclusively at the particle edges. The acid treatment implies an increase of the specific surface area in all cases, reaching a highest S-BET value of 435 m(2)/g. In the case of samples with higher stevensite content, the increase in the S-BET is mainly due to increases of the microporosity, whereas in the sample with higher kerolite content the increase in the S-BET is mainly ascribed to increase of the external surface area of the particles. Then, these materials were evaluated in CO2 capture processes reaching a maximum value of 1.98 mmol/g at 65 degrees C and 760 mm Hg.
英文关键词	Kerolite Stevensite Acid activation FTIR CO2 adsorption
类型	Article
语种	英语
国家	Spain
收录类别	SCI-E
WOS记录号	WOS:000498292200022
WOS关键词	AMARGOSA DESERT ; MG-CLAYS ; ADSORPTION ; SEPIOLITE ; SMECTITE ; CRYSTALLIZATION ; STEVENSITE ; ORIGIN ; SILICA
WOS类目	Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
EI主题词	2020-01-15
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312499
作者单位	1.Univ Malaga, Fac Ciencias, Dept Quim Inorgan Cristalog & Mineral, Campus Teatinos S-N, E-29071 Malaga, Spain; 2.Univ Autonoma Madrid, Fac Ciencias, Dept Geol & Geoquim, E-28049 Madrid, Spain; 3.IGME, Madrid 28760, Spain
推荐引用方式 GB/T 7714	Franco, Francisco,Antonio Cecilia, Juan,Pozo, Manuel,et al. Microwave assisted acid treatment of kerolitic clays from the Neogene Madrid Basin (Spain) and its use in CO2 capture processes[J],2020,292.
APA	Franco, Francisco,Antonio Cecilia, Juan,Pozo, Manuel,Pardo, Laura,Bellido, Eva,&Garcia-Sancho, Cristina.(2020).Microwave assisted acid treatment of kerolitic clays from the Neogene Madrid Basin (Spain) and its use in CO2 capture processes.MICROPOROUS AND MESOPOROUS MATERIALS,292.
MLA	Franco, Francisco,et al."Microwave assisted acid treatment of kerolitic clays from the Neogene Madrid Basin (Spain) and its use in CO2 capture processes".MICROPOROUS AND MESOPOROUS MATERIALS 292(2020).