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https://doi.org/10.1016/S0960-8524(00)00111-5

has been cited by the following article:

• TITLE: Preparation of Activated Carbons from Mongolian Lignite and Sub-Bituminous Coal by a Physical Method

  AUTHORS: Uugantsetseg Gombojav, Irekhbayar Jambal, Enkhsaruul Byambajav

  KEYWORDS: Coal-Based Activated Carbon, Porous Structure, Physical Activation, Micropores, Mesopores

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.8 No.3, April 21, 2020

  ABSTRACT: Preparation of activated carbons by a physical activation technique is performed using the methods of coal pyrolysis and gasification at different temperatures. As increasing pyrolysis temperature from 520°C to 700°C, the yield of activated carbons from the Khuut (KH) sub-bituminous coal is lowered, and amount of micropores increases gradually; however there is no development of mesopores by the KH coal pyrolysis. When the KH coal has a small loss during its physical activation due to difficulty and inactivity of its macrostructure decomposition, the smaller porosity is developed in the resulting carbons. The Aduunchuluun (AD) lignite is activated by pyrolysis and gasification at the highest temperature of 700°C in the present study. It is identified that the gasification of AD lignite develops well a porous structure with the highest surface area of 522 m2/g which is three times larger than that (155 m2/g) of the activated carbon produced by pyrolysis of the same lignite. The IR and SEM analysis confirm a significant difference in chemical and structural changes between the AD, KH raw coals and corresponding carbon samples in the physical activation processes.