Low-Temperature Oxidation of Heavy Oil Asphaltene with and without Catalyst

被引：4
作者：
Yang, Haiyang [1 ,2 ]
Yang, Huiyu [1 ]
Yan, Xuemin [2 ]
机构：
[1] Hubei Engn Univ, Sch Chem & Mat Sci, Xiaogan 432000, Peoples R China
[2] Yangtze Univ, Coll Chem & Environm Engn, Jingzhou 434023, Peoples R China
来源：
MOLECULES | 2022年 / 27卷 / 20期
关键词：
asphaltene; low-temperature catalytic oxidation; hydrogen peroxide; propionic anhydride; methanol; OXIDE NANOPARTICLES; ADSORPTION;
D O I：
10.3390/molecules27207075
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
In this study, the asphaltene extracted from Luntai heavy oil was oxidized by a mixture of propionic anhydride and hydrogen peroxide without and with a catalyst. Elemental analysis and infrared spectroscopy results indicated the occurrence of oxygen addition, condensation, and side chain cleavage reactions in the oxidation process. Oxidation products were divided into methanol solubles and methanol insolubles. The H/C and O/C atomic ratios of the MeOHS in the oxidation products without a catalyst were higher than those of the Luntai asphaltene. MeOHS had fewer aromatic rings than Luntai asphaltene. Compared with the oxidative reaction without a catalyst, the total mass of oxidation products and the proportion of MeOHS in oxidation products both increased after catalytic oxidation. This low-temperature oxidation technology can be used to upgrade asphaltenes, and thus can promote the exploitation and processing of heavy oil.
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页数：7
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