Abstract The effect of pretreatment with acidic bronsted ionic liquid 1-sulfonic acid butyl-3-methylimidazolium trifluoromethanesulfonate ([B(SO 3 H)mim]OTf) on Shengli lignite (SL) pyrolysis behavior and its pyrolysis products distribution were investigated in this paper. In order to study the mechanism of [B(SO 3 H)mim]OTf pretreatment on the dissolution of SL, [B(SO 3 H)mim]OTf treated-SL was also analyzed by the Fourier Transform Infrared Spectroscopy (FTIR), Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFT) and TG-DTG. It is found that the pretreatment temperature and the ratio of [B(SO 3 H)mim]OTf to SL have a significant impact on the pyrolysis of SL. The pretreatment of SL with [B(SO 3 H)mim]OTf can not only result in the increase of the yield of total tar and light oil fraction but also improve the quality of tar. After the pretreatment at 200 °C and [B(SO 3 H)mim]OTf/SL at 1, the tar yield, light fraction content, arenes, and phenolics content in tar is 1.6, 2.4, 6.3 and 3.2 times higher than that from raw SL pyrolysis, respectively. Pretreatment with [B(SO 3 H)mim]OTf leads to the fracture of the coal network, resulting in the increase of the content of C O and C O C bonds and the disruption of hydrogen bonds.

中文翻译：

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酸性布朗斯台德离子液体[B(SO3H)mim]OTf预处理褐煤热解褐煤

摘要 本文研究了酸性布朗斯台德离子液体1-磺酸丁基-3-甲基咪唑鎓三氟甲磺酸盐([B(SO 3 H)mim]OTf)预处理对胜利褐煤(SL)热解行为及其热解产物分布的影响。 . 为了研究[B(SO 3 H)mim]OTf预处理对SL溶解的机理，[B(SO 3 H)mim]OTf处理的-SL还通过傅里叶变换红外光谱(FTIR)进行了分析，漫反射红外傅立叶变换光谱 (DRIFT) 和 TG-DTG。发现预处理温度和[B(SO 3 H)mim]OTf与SL的比例对SL的热解有显着影响。用[B(SO 3 H)mim]OTf对SL进行预处理不仅可以提高总焦油和轻油馏分的产率，而且可以改善焦油的质量。经过200℃预处理和[B(SO 3 H)mim]OTf/SL为1，焦油中的焦油产率、轻馏分含量、芳烃和酚类含量分别是其1.6、2.4、6.3和3.2倍分别来自原始 SL 热解。[B(SO 3 H)mim]OTf预处理导致煤网络破裂，导致CO和COC键含量增加，氢键断裂。