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The objective of this work was to find the optimal preparation methods of semi-coke and investigate the absorption mechanisms in the removals of SO2 and NOx. Semi-cokes, treated by different combined activation methods, were used to remove SO2 and NO from simulated flue gas in a fixed bed. Detailed characterizations were discussed by BET, SEM and FTIR. Results showed the activated and loaded semi-cokes...
TAA, a new dispersant for making coal–water slurry (CWS), has been synthesized by grafting copolymerization of oxidized tannic acid (TA) and acrylic acid (AA). 1H NMR and FTIR tests revealed that TAA has a unique jellyfish-like 3D molecular structure, in agreement with experimental evidences from contact angle and zeta potential measurements. The surfactivity of TAA in aqueous solution was characterized...
The pyrolysis mechanism of Zhundong sub-bituminous coal (ZD) was investigated by tube furnace, gas chromatography and GC/MS. Coal samples were pyrolyzed in a tube furnace at any of six temperatures (from 500 to 1000°C in 100°C increments) and the pyrolysis products were analyzed. The volatile release characteristics were investigated by gas chromatography and the tars generated during pyrolysis were...
In order to convert the used engine oil (UEO) to a fine chemicals, the properties of engine oil (EO) and UEO were initially compared by FTIR, 1H NMR, and thermal behavior analyses. The UEO composition was first modified by sulfonation and then separated through separating funnel. Results showed that the as-prepared product, sulfonated UEO (SUEO), exhibits the properties of a surfactant. The surface...
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