Preparation of Carbon Micro-Spheres from Liquefaction Products of Lignite with NaOH-Methanol

Abstract:

Carbon micro-spheres (CMSs) with diameters of several micrometers were synthesized by surfactant-assisted self-assembly of direct coal liquefaction products, which come from the lignite liquefaction with NaOH and methanol. The synthesized CMSs were characterized by X-ray diffraction, scanning electron microscope and TG analysis. The results show that cetyltrimethylammonium bromide (CTAB) and carbonization temperature play an important role in the formation of CMSs. The CMSs have a spherical morphology, smooth surface, probable size of about 5-10μm and a relatively high thermal resistance in N2 atmosphere. The formation mechanism of these CMSs was discussed based on the feature of the reaction system.

• Periodical: Advanced Materials Research (Volumes 560-561)
• Pages: 267-270
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.560-561.267
• Online since: August 2012
• Authors: Zhi Ping Lei, Li Juan Gao, Heng Fu Shui, Zhi Cai Wang, Shi Biao Ren
• Keywords: Carbon Micro-Sphere, Cetyl Trimethyl Ammonium Bromide (CTAB), Direct Coal Liquefaction Product

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