化学工程2026，Vol.54Issue(4)：13-20,8.DOI:10.3969/j.issn.1005-9954.2026.04.003
钛基金属-有机框架对柴油正丁醇混合燃料喷雾与燃烧的影响
Effect of titanium-based MOFs on spray and combustion of diesel/n-butanol blended fuel
摘要
Abstract
The effects of titanium-based MOFs(metal-organic frameworks)nanoparticles on spray and combustion characteristics of diesel/n-butanol blends were investigated in a constant volume combustion chamber under varying injection pressures.The results indicate that the addition of NH2-MIL-125(Ti)reduces the density,kinematic viscosity and surface tension of the diesel/n-butanol blended fuel.The nanoparticles promote the secondary spray atomization of the spray while increasing the liquid-phase and gas-liquid phase spray penetration distance,spray cone angle and spray surface area of the mixed fuel.Compared to D80B20,the addition of NH2-MIL-125(Ti)delays the temperature rise in the spray region,prolongs the fuel-air mixing duration,and consequently increases the flame lift-off length while extending the ignition delay period.The combustion duration is shortened due to improving atomization and enhancing burning rate facilitated by the MOFs nanoparticles.Moreover,the combination of enhanced spray atomization and the catalytic effect of TiO2 nanoparticles[derived from NH2-MIL-125(Ti)pyrolysis]promotes more complete combustion,significantly reducing soot formation and flame area.At an injection pressure of 140 MPa,D80B20Ti20 exhibits 45.9％ and 48.7％ reductions in normalized KL factor and total natural luminosity intensity respectively compared to D80B20,with this suppression effect becoming more pronounced at higher injection pressures.关键词
钛基金属-有机框架/柴油/正丁醇混合燃料/喷雾特性/燃烧特性/定容燃烧弹Key words
titanium-based MOFs/diesel/n-butanol blended fuel/spray characteristics/combustion characteristics/constant volume combustion chamber分类
能源科技引用本文复制引用
包中强,吉振华,马彦磊,张鹏,罗丁,陈昊,官维,潘明章..钛基金属-有机框架对柴油正丁醇混合燃料喷雾与燃烧的影响[J].化学工程,2026,54(4):13-20,8.基金项目
国家自然科学基金资助项目(22272010) （22272010）
陕西省创新能力支撑计划(2021TD-28,2022KXJ-144) （2021TD-28,2022KXJ-144）
