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Effective utilization of the wasted high‐ash coal liquefaction residue (CLR) becomes increasingly important with the fast development of the coal chemical industry. Herein, a self‐template porous carbon is prepared using CLR as the raw material. The ashes contained in the CLR reacted with potassium hydroxide (KOH), and soluble salts were formed during the heat treatment. After washing, micropores...
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