Effects of Co and Mg modified USY on tar product distribution of bark coal pyrolysis
WU Cheng-hui, DU Mei-li, CHENG Xu, AI Qing-teng, ZHANG Yue, LIN Peng-cheng
Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, The Ministry of Land and Resources, College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
Abstract: Co and Mg modified USY molecular sieves with compositions such as 5% Co/USY,5% Mg/USY and 1% Co-5% Mg/USY,1% Mg-5% Co/USY are prepared,and analyzed by XRD,BET,NMR,and PY-IR.By means of TG and PY-GC-MS,the directional catalysis of different molecular sieves and their effects on the distribution of tar components are investigated in the pyrolysis of bark coal.It is shown that compared with single metal modified USY,1% Co-5% Mg/USY and 5% Co-1% Mg/USY have less total acid contents.Four kinds of catalysts all play a certain role in enhancing the aromatics content in tar product from pyrolysis,among which 5% Mg/USY molecular sieve plays the most obvious effect,and make the aromatics content increase by 15%,which is related to aliphatic hydrocarbon conversion condensation.The content of light aromatic hydrocarbons in total aromatics increases by 4% over 5% Mg/USY molecular sieve.The 1% Co-5% Mg/USY is more helpful to the deoxidation of phenols to aromatics.
吴承辉, 杜美利, 程序, 艾庆腾, 张悦, 林鹏程. Co、Mg改性USY对树皮煤热解焦油产物分布的影响[J]. 现代化工, 2021, 41(1): 108-112.
WU Cheng-hui, DU Mei-li, CHENG Xu, AI Qing-teng, ZHANG Yue, LIN Peng-cheng. Effects of Co and Mg modified USY on tar product distribution of bark coal pyrolysis. Modern Chemical Industry, 2021, 41(1): 108-112.
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