Synthesis of flower-like Boehmite (AlOOH) via a simple solvothermal process without surfactant

Journal Article · Fri Oct 15 04:00:00 EDT 2010 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2010.06.013· OSTI ID:22204697

Li, Guangci ^[1]; Liu, Yunqi ^[1]; Liu, Di; Liu, Lihua; Liu, Chenguang ^[1]

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1. State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, CNPC, China University of Petroleum, No. 66, Changjiang West Road, Qingdao 266555 (China)

Boehmite (AlOOH) with hierarchical flower-like structures was synthesized by the solvothermal reaction of AlCl{sub 3}.6H{sub 2}O in the presence of ethanol and toluene at 200 {sup o}C for 24 h. The product was characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that boehmite with flower-like nanostructures, which aggregated together by the weak hydrogen bonds, was formed through dissolution-deposition process of boehmite microcrystals and the toluene has a great effect on the morphology of product in the reaction system. Meanwhile, the {gamma}-Al{sub 2}O{sub 3} was also obtained by calcination of above product at 500 {sup o}C for 2 h, and the flower-like morphology kept no change. The surface area of {gamma}-Al{sub 2}O{sub 3} powder was determined to be 166.8 m{sup 2}/g by N{sub 2} adsorption measurement. The possible formation mechanism of flower-like boehmite nanostructures was proposed and discussed.

• OSTI ID: 22204697
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 10 Vol. 45; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
ALUMINIUM CHLORIDES
ALUMINIUM OXIDES
CRYSTAL STRUCTURE
CRYSTALS
DEPOSITION
FOURIER TRANSFORM SPECTROMETERS
FOURIER TRANSFORMATION
INFRARED SPECTRA
MORPHOLOGY
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
SURFACE AREA
SURFACTANTS
SYNTHESIS
TOLUENE
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION