用于中间相沥青制备的两种催化裂化油浆组成分析

The Component Analysis of Two Catalytic Cracking Slurries for Preparing Mesophase Asphalt

中间相沥青作为制备高性能碳材料的重要前驱体,研究影响中间相沥青结构的因素(原料组成和制备工艺)对推动碳材料发展具有重要意义.以新疆两种催化裂化油浆为原料,经凝胶渗透色谱(GPC)、核磁共振氢谱(^(1)H-NMR)、元素分析、气相色谱-质谱联用(GC-MS)等系统表征,明晰了其组成与结构特点.针对油浆高饱和分特性(>47%),一改传统原料溶剂精制策略,采用先热解优化原料组成,再热缩聚两步法制得软化点为290℃的广域型中间相沥青.

It is of great significance to promote the development of carbon materials by studying the factors(composition of raw materials and preparation process)affecting the structure of mesophase asphalt as an important precursor for the preparation of high-performance carbon materials.Here,two fluid catalytic cracking slurries from Xinjiang were characterized by Gel Permeable Chromatography(GPC),^(1)H Nuclear Magnetic Resonance(^(1)H-NMR),elemental analysis and Gas Chromatography-Mass Spectrometry(GC-MS)to clarify their composition and structural characteristics.In response to the high saturated fraction characteristic of oil slurry(>47%),a two-step method of optimizing the composition of raw materials by pyrolysis followed by thermal poly condensation was used to produce a wide-area mesophase asphalt with a softening point of 290℃instead of the traditional solvent refining strategy.