详细信息
文献类型:期刊文献
中文题名:重油和沥青中芳香碳的定量估计
英文题名:Quantitative Estimation of Aromatic Carbons in Heavy Oils and Bitumens
作者:陆善祥[1];Gray,MY[1]
机构:[1]华东理工大学联合化学反应工程研究所
年份:1994
卷号:20
期号:4
起止页码:507
中文期刊名:华东理工大学学报(自然科学版)
外文期刊名:Journal of East China University of Science and Technology
收录:CSTPCD;;国家哲学社会科学学术期刊数据库;EI(收录号:1996062612931);Scopus;CSCD:【CSCD2011_2012】;
基金:国家自然科学基金
语种:中文
中文关键词:重油;沥青;定量分析;芳香碳;NMR
外文关键词:heavy oil;asphaltene; NMR spectroscopy;quantitative analysis; structuralgroup analysis;bridgehead carbons;hydroaromatic carbons
摘要:采用 ̄1H-NMR和 ̄(13)C-NMR谱,结合元素分析等数据,估计了重油和沥青中各种类型芳香碳,建立了较完整的表征方法.在模型混合物核磁共振谱基础上,指定 ̄(13)C-NMR谱中129.5~150(ppm)+123.5~126(ppm)/3谱带作为非质子芳碳.模型混合物校核表明,用本方法估计的桥头芳碳和环烷并芳碳与实际值吻合良好;估计的四种Alberta沥青质样品的各种类型芳碳.其结果与Strausz化学分析的结果一致.
An enhanced method is established for estimating concentrations of varioustypes of aromtic carbons(protonated,bridgehead,hydroaromatic,methyl-&≥C_2 alkyl-sub-stituted,and hetero-substituted carbons) in heavy oils and bitumens by H-NMR and ̄(13)C-NM Rdata.Based on the NMR data of model mixtures,the band assignment(129.5~ 150.0 ppm+123.5 ~ 126ppm/3)of non-protonated aromatic carbons in  ̄(13)C-NMR is proposed. Thechecks of model mixtures indicate that the estimates of bridgehead and hydroaromatic car-bons by the proposed method are in good agreement with the actual values.Moreover,theestimatcs of abovc-mentioned aromatic carbons for four Alberta asphaltenes agree with theresults of Strauszs。
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