摘要
成功设计并合成具有独特空间螺旋结构的AD-BPI(菲并咪唑衍生物),旨在模拟重油大分子行为。通过创新的荧光显微成像技术,实现重油分子在FCC(流化催化裂化)催化剂内部传质过程的时空分辨可视化,重点考察纯高岭土及高岭土与新型介孔氧化铝掺杂2种基质材料催化剂的传质性能。以AD-BPI为探针分子,结合共聚焦显微镜技术,对比不同催化剂在时间与空间维度上的传质效率。实验结果显示:相较于纯高岭土催化剂,掺杂了新型介孔氧化铝的FCC催化剂展现出更为优异的扩散传质性能。这一发现不仅揭示了催化剂基质材料对重油大分子传质行为的关键影响,还通过AD-BPI探针有效辨析了FCC催化剂对大分子吸附行为的差异性,为重油加工催化剂的设计与优化提供了重要参考。
AD-BPI(phenanthroimidazole derivative)with a unique spatial helical structure was successfully designed and synthesized,aiming to simulate the behavior of heavy oil macromolecules.Through the innovative fluorescence microimaging technology,the spatio-temporal resolution visualization of the mass transfer process of heavy oil molecules within FCC(fluid catalytic cracking)catalysts was achieved.The focus was on evaluating the mass transfer performance of two matrix materials:pure kaolin and kaolin doped with novel mesoporous alumina.Utilizing AD-BPI as the probe molecule and combining confocal microscopy technology,the mass transfer efficiencies of different catalysts in the temporal and spatial dimensions were compared.The experimental results indicate that FCC catalysts doped with novel mesoporous alumina exhibit superior diffusive mass transfer performance compared with pure kaolin catalysts.This discovery not only reveals the crucial role of catalyst matrix materials in influencing the mass transfer behavior of heavy oil macromolecules,but also effectively discriminates the differences in macromolecule adsorption behaviors among FCC catalysts through the AD-BPI probe,providing an important reference for the design and optimization of heavy oil processing catalysts.
作者
于蕾
关慧敏
张莉
陈彩琳
王焕
秦玉才
YU Lei;GUAN Huimin;ZHANG Li;CHEN Cailin;WANG Huan;QIN Yucai(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113006,Liaoning Province,China;Lanzhou Petrochemical Company,PetroChina Co.,Ltd.,Lanzhou 730060,Gansu Province,China)
出处
《化学工程》
北大核心
2025年第8期36-40,88,共6页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(U20A20120,21902068)
“兴辽英才计划”项目(XLYC2203165)
中国石油天然气股份有限公司科技专项外协项目(KYWX-22-002)。
关键词
FCC催化剂
菲并咪唑衍生物
荧光显微成像
传质
可视化
FCC catalysts
phenanthroimidazole derivatives
fluorescence microimaging
mass transfer
visualization
