首页|Catalytic Performance of Aquathermolysis and Viscosity Reduction of Heavy Oil over a WO3/ZrO2 Solid Acid

Catalytic Performance of Aquathermolysis and Viscosity Reduction of Heavy Oil over a WO3/ZrO2 Solid Acid

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Tungstated zirconia(WO3/ZrO2)solid acid catalysts with different WO3 contents were prepared by a hydrothermal method and then used in the catalytic aquathermolysis of heavy oil from Xinjiang.The WO3/ZrO2 solid acid catalyst was characterized by a range of characterization methods,including X-ray diffraction,NH3-temperature programmed desorption,and pyridine infrared spectroscopy.The WO3 content of the WO3/ZrO2 catalysts had an important impact on the structure and property of the catalysts.When the WO3 mass fraction was 20%,it facilitated the formation of tetragonal zirconia,thereby enhancing the creation of robust acidic sites.Acidity is considered to have a strong impact on the catalytic performance of the aquathermolysis of heavy oil.When the catalyst containing 20%WO3 was used to catalyze the aquathermolysis of heavy oil under conditions of 14.5 MPa,340℃,and 24 h,the viscosity of heavy oil decreased from 47266 to 5398 mPa·s and the viscosity reduction rate reached 88.6%.The physicochemical properties of heavy oil before and after the aquathermolysis were analyzed using a saturates,aromatics,resins,and asphaltenes analysis,gas chromatography,elemental analysis,densimeter etc.After the aquathermolysis,the saturate and aromatic contents significantly increased from 43.3%to 48.35%and 19.47%to 21.88%,respectively,with large reductions in the content of resin and asphaltene from 28.22%to 25.06%and 5.36%to 2.03%,respectively.The sulfur and nitrogen contents,and the density of the oil were significantly decreased.These factors were likely the main reasons for promoting the viscosity reduction of heavy oil during the aquathermolysis over the WO3/ZrO2 solid acid catalysts.

heavy oilaquathermolysisviscosity reductionWO3/ZrO2 solid acid catalyst

Ning Haolong、Wu Junwen、Shen Zhibing、Che Chang、Tang Ruiyuan、Liang Shengrong、Zhang Juntao、Jiang Haiyan、Yuan Shibao

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State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,State Center For Research and Development of Oil Shale Exploitation,Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 100083,China

Xi'an Key Laboratory of Low-carbon Utilization for High-carbon Resources,College of Chemistry and Chemical Engineering,Xi'an Shiyou University,Xi'an,Shaanxi 710065,China

College of Petroleum Engineering,Xi'an Shiyou University,Xi'an,Shaanxi 710065,China

2024

中国炼油与石油化工(英文版)
中国石化集团石油化工科学研究院

中国炼油与石油化工(英文版)

影响因子：1.199
ISSN：1008-6234
年,卷(期)：2024.26(3)