Synthesis and investigation of proton conductivity for intercalated kaolinite with 4-amidinopyridinium chloride

Journal Article · Tue Dec 15 00:00:00 EST 2015 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2015.09.001· OSTI ID:22573956

Ren, Li-Te ^[1]; Li, Xiao-Pei ^[1]; Liu, Jian-Lan ^[1]; Ren, Xiao-Ming ^[1]

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1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009 (China)

The proton-conducting materials have potential application in devices such as fuel cells. In this study, a mineral kaolinite-based proton conducting material, kaolinite-4-amidinopyridinium hydrochloride (K-4-APy–HCl), was synthesized by the intercalated compound kaolinite-4-amidinopyridine (K-4-APy) adsorbing volatilizing HCl. The thermogravimetric analysis (TG), powder X-ray diffraction (PXRD) and IR spectrum confirmed the HCl successfully inserting into the interlayer space of kaolinite and the 4-aminopyridine being protonated. The intercalation efficiency is estimated to be ca. 85.6%. With respect to K-4-APy, the interlayer space expends by 1.53 Å. The thermal decomposition mechanism was studied by PXRD and TG techniques. The K-4-APy–HCl shows proton conductivity with σ=3.379×10{sup −8} S cm{sup −1} at 373 K and E{sub a}=1.159 eV in the anhydrous condition, which are comparable to MOFs-based proton conducting materials. - Graphical abstract: The intercalated hybrid of mineral kaolinite with 4-amidinopyridinium hydrochloride is prepared to use as proton conducting material. - Highlights: • A new strategy is proposed for preparation of kaolinite-based proton conductor. • Intercalatied hybrid was prepared by sequentially inserting 4-amidinopyridine and adsorbing HCl. • The proton conductivity of intercalated hybrid is comparable to MOFs-based proton-conductors.

• OSTI ID: 22573956
• Journal Information: Journal of Solid State Chemistry, Vol. 232; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORIDES
CLATHRATES
COMPARATIVE EVALUATIONS
EFFICIENCY
FUEL CELLS
HYBRIDIZATION
HYDROCHLORIC ACID
INFRARED SPECTRA
KAOLINITE
POWDERS
PROTON CONDUCTIVITY
PROTON TRANSPORT
PROTONS
PYROLYSIS
SYNTHESIS
THERMAL GRAVIMETRIC ANALYSIS
X RADIATION
X-RAY DIFFRACTION