沥青质
催化作用
加氢脱氮
支化(高分子化学)
镍
解聚
化学工程
材料科学
加氢脱硫
催化裂化
碳纤维
开裂
粘度
X射线光电子能谱
化学
有机化学
冶金
复合材料
复合数
工程类
作者
Pan Xiong,Haiyang Yang,Peiyue Wu,Yingqi Liao,Dichen Tan,Zhaowu Ma,Xuemin Yan
标识
DOI:10.1016/j.mcat.2022.112528
摘要
Faced with the increasing energy demand, the extraction of heavy oil is crucial. Efficient catalysts can reduce the viscosity and improve the quality of heavy oil. In this paper, the highly dispersed Ni/NC-6.0 catalyst was prepared by one-pot method and was utilized for the viscosity reduction and upgrading of heavy oil. The results of H2-TPD, SEM, TEM, and XPS demonstrate that the average size of Ni/NC-6.0 is about 200 nm, and the Ni atoms coordinated with N atoms are highly dispersed over the surface of carbon support. The experimental results of catalytic aquathermolysis reveal that highly dispersed Ni/NC-6.0 catalyst showed efficient catalytic performance in reducing the degree of asphaltenes branching and cracking the long chains of resin. It can reduce the viscosity by 82.21% and decrease the heavy components by 13.04% through the occurrence of hydrodesulfurization, hydrodenitrogenation, debranching, dealkylation of long-chain, depolymerization, and cracking. This work makes contributions to viscosity reduction and upgrading of heavy oil.
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