Preparation of disk-like α-Fe2O3 nanoparticles and their catalytic effect on extra heavy crude oil upgrading

FUEL

卷:251

Article

Li, Feifei¹  Wang, Xiaodong¹  Pan, Hui²  Li, Qiuye¹  Yang, Jianjun¹ 

[1] Henan Univ, Engn Res Ctr Nanomat, Kaifeng 475004, Peoples R China

[2] Henan Univ, Coll Chem & Chem Engn, Kaifeng 475004, Peoples R China

关键词: Iron oxide;    Nanoparticle;    Extra heavy crude oil;    Viscosity reduction;    Catalysis;   

DOI  :  10.1016/j.fuel.2019.04.048

来源: Elsevier

【 摘 要 】

In this paper, disk-like alpha-Fe2O3 nanoparticles were synthesized by one-step via an n-octyl alcohol-mediated self-assembly process and were subsequently used as the catalyst for the updating of heavy crude oil. The characterization results show that the diameter of the as-prepared alpha-Fe2O3 disks is in the range of 150-200 nm and the nanoparticles have a hematite structure with [1 1 0] preferred orientation. The catalyst strongly acts on the asphaltene and causes its lower S content and N content, lower aromaticity and aromatic condensation, and higher branchiness index. Adding tetralin causes the increment of aromatics content, the decrease of resin, and more molecules containing aromatic moieties bearing 2 and 3 rings. The viscosity of the Shengli extra heavy oil reduced substantially from 161180 mPa.s to 45882 mPa.s (50 degrees C) through the combination of the alpha-Fe2O3 nanoparticles and tetralin (a hydrogen donor).

【 授权许可】

Free