Green Aromatic Hydrocarbon Production from Cocracking of a Bio-Oil Model Compound Mixture and Ethanol over Ga2O3/HZSM-5

详细信息    查看全文

• 作者：Shurong Wang ; Qinjie Cai ; Junhao Chen ; Li Zhang ; Xiangyu Wang ; Chunjiang Yu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：September 10, 2014
• 年：2014
• 卷：53
• 期：36
• 页码：13935-13944
• 全文大小：515K
• ISSN：1520-5045

文摘

The distilled fraction (DF) from bio-oil molecular distillation can be used for the generation of aromatic hydrocarbons by cocracking with ethanol over HZSM-5. In this work, typical model compounds were selected to simulate the DF, and a modified Ga₂O₃/HZSM-5 was adopted to promote the aromatization reaction. Compared with unmodified HZSM-5, 15% Ga₂O₃/HZSM-5 could increase the yield of the oil phase from 31.5 to 39.2 wt % during cocracking of a mixture of model compounds and ethanol, with an obvious decrease in the C₃鈥揅₄ gaseous hydrocarbon yield. Moreover, the total content of aromatic hydrocarbons in the oil phase was around 95%. The production of monoaromatics, especially xylenes, was favored. The influences of reaction temperature and feedstock weight hourly space velocity (WHSV), as well as the catalyst regeneration, were also investigated. On the basis of the experimental results, a reaction mechanism is proposed and the promotion of aromatic hydrocarbon generation by Ga₂O₃ is discussed.