文献类型：期刊文献

英文题名：Molecular engineering and modification of FCC slurry oil residue for improving ageing resistance of high quality paving asphalt

作者：Cui, Lingrui[1];Xu, Jun[1];Cen, Lian[1];Ren, Mannian[2];Cao, Fahai[1]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Large Scale Reactor, Shanghai 200237, Peoples R China;[2]Sinopec Luoyang Co, Luoyang 471003, Peoples R China

年份：2021

卷号：299

外文期刊名：CONSTRUCTION AND BUILDING MATERIALS

收录：;EI(收录号：20213010685353);WOS:【SCI-EXPANDED(收录号:WOS:000685963700001)】；

基金：We are grateful for the financial support by Sinopec Innovation Foundation (No. 1180093) . The authors also thank Sinopec Luoyang Company for providing oil samples and technical supports. We would like to thank Professor Lorna Smith for her reading and constructive advice for polishing this paper.

语种：英文

外文关键词：Molecular simulation; FCC slurry oil; Chemical modification; Colloidal stability

摘要：In the present work, a novel resin molecule based on fluid catalytic cracking (FCC) slurry oil residue was designed and prepared with aid of molecular simulation to improve its ageing resistance. The average molecular structure of resin was characterized with elemental analysis, Fourier-transform IR (FT-IR) spectroscopy, NMR spectroscopy and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) and designed resin was synthesized by attaching an additional propyl group to the as-received resin. The interactions of resins and asphaltene molecules were investigated via molecular simulation, UV-visible (UV-Vis) spectroscopy and atomic force microscopy (AFM). The results revealed that the equilibrium distance of designed resin-asphaltene dimer decreased from 0.42 nm to 0.38 nm while the lowest contact energy increased from 9.3 kcal/mol to 11.2 kcal/mol, indicating an improved stability of designed resin-asphaltene particles. The adsorption isotherm indicated that more modified resin molecules could be adsorbed by asphaltene than the original resin. Compared with original asphalt, less aggregation of asphaltene occurred in asphalt blended with modified slurry oil residue during ageing process, showing its greatly improved ageing resistance.