Organic Intercalation of Kaolinite in Coal Bearing Strata

Ding, Shu Li; Xu, Bo Hui; Sun, Yu Zhuang; Chen, Xiao Ran; Hou, Dan Dan

doi:10.4028/www.scientific.net/AMR.915-916.1113

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HomeAdvanced Materials ResearchAdvanced Engineering ResearchOrganic Intercalation of Kaolinite in Coal Bearing...

Organic Intercalation of Kaolinite in Coal Bearing Strata

Abstract:

With XRD and IR, the authors conducted studies on the intercalation of acrylamide and salts of fatty acids in kaolinite of coal-bearing strata and its stability. The acrylamaide and the salts of fatty acids were successfully intercalated into kaolinite by virtue of polar organic complexes, which acted the part of entrainer. The basic spacing changed from origin value of 0.718nm to 1.122nm and 1.132nm respectively after the intercalation was perfectly accomplished in kaolinite. The phenomenon that organic complexes are intercalated into kaolinite and form a stable interlayer is probably related to the formation of hydrogen bonds between the inner-surface hydroxyls and the intercalated molecules.

Info:

Periodical:

Advanced Materials Research (Volumes 915-916)

Main Theme:

Advanced Engineering Research

Edited by:

Yun-Hae Kim

Pages:

1113-1117

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.915-916.1113

Citation:

S. L. Ding et al., "Organic Intercalation of Kaolinite in Coal Bearing Strata", Advanced Materials Research, Vols. 915-916, pp. 1113-1117, 2014

Online since:

April 2014

Authors:

Shu Li Ding *, Bo Hui Xu, Yu Zhuang Sun, Xiao Ran Chen, Dan Dan Hou

Keywords:

Intercalation, Kaolinite in Coal Bearing Strata, Organic Complex

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Paper TitlePages

Synthesis and Humidity Controlling Properties of Hydrotalcite/poly (sodium acrylate-acrylamide) Composite

Authors: Ji Hui Wang, Fei Dong, Shu Ping Ren, Meng Jie Guo

Abstract: Hydrotalcite/poly(sodium acrylate-acrylamide) composite was synthesized by using inverse suspension polymerization method under different hydrotalcite content, neutralization degree and ratio of monomer with orthogonal experiments. The surface morphology, structure and humidity controlling properties of composite were observed and determined. The results show that hydrotalcite/poly (sodium acrylate-acrylamide) composite is in an irregular block like structure with different size. During the polymerization process, acrylate and acrylamide monomers are successfully intercalated into the interlayer of hydrotalcite, and the distance of (003) hydrotalcite plane is increased from 0.766nm to 1.146nm. The impact of three factors on the humidity controlling behavior of composites increases by the order of ratio of monomer, hydrotalcite content and neutralization degree. The optimum preparation parameters are hydrotalcite content of 4%, neutralization degree of 90% and ratio of monomer in 9:1.

1420

Synthesis and Humidity Controlling Behaviors of Sepiolite/Poly (Sodium Acrylate-Acrylamide) Composite

Authors: Ji Hui Wang, Fei Dong, Shu Ping Ren

Abstract: Sepiolite/poly (sodium acrylate-acrylamide) composite was synthesized by using inverse suspending polymerization method under different dispersant content, neutralization degree and ratio of monomer with orthogonal experiments. The surface morphology, structure and humidity controlling properties of composite were observed and determined. The results show that sepiolite/ poly (sodium acrylate-acrylamide) composite is in a fine particle with rough surface. During the polymerization process, acrylate and acrylamide monomer is grafted with hydroxyl on the surface of sepiolite and then intercalated successfully into the silica layers of sepiolite. The impact of three factors on the humidity controlling behavior of composites increases by the order of dispersant content, ratio of monomer and neutralization degree. The optimum preparation parameters are dispersant content of 10%, neutralization degree of 85% and ratio of monomer 2:1.

1448

Effect of Intercalated Agents on Thermal Deintercalation of Kaolinite

Authors: Xing Gang Chen, Man An, Xiao Ming Sang, Gui Xiang Hou, Shou Wu Yu, Yi Shen

Abstract: A series of intercalated kaolinite with formamide, potassium acetate and acrylamide were prepared. The thermal deintercalation processes of these composites were studied using a combination of X-ray diffraction and thermal analysis technique. X-ray diffraction spectra showed acrylamide could be indirectly intercalated into kaolinite layers. The activatory energy of thermal deintercalation of acrylamide from kaolinite-potassium acetate composites was 15.60 kJ/mol, higher than that from kaolinite-formamide composites, 9.51 kJ/mol. The reason was that strong hydrogen bondings between acrylamide and potassium acetate were formed in kaolinite layers.

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