摘要
采用催化加氢热解技术提取了高演化沉积有机质中共价键结合生物标志物分子。催化加氢热解是在高氢压(>10MPa)、较慢的升温速率(5℃min)和高分散型催化剂作用下的还原反应,是一种对提取高收率、少结构重排的干酪根和沥青质分子骨架中共价键结合的生物标志化合物有独特作用的分析性手段。实验结果表明,通过催化加氢热解处理可以合理释放出高演化沉积有机质分子骨架中的具有原生性的组分,在油油对比、油源对比、油藏有机质沉积环境以及油藏的次生改造等研究方面可获得较好的应用。特别是针对高演化沉积物和一些后期严重降解的油藏而言,在恢复原始有机地球化学信息研究方面更具有重要意义。
In this paper, release of covalently-bound biomarkers via catalytic hydropyrolysis from the higher evolution sedimentary organic matter, and the reaction mechanism of hydropyrolysis of kerogenes are studied. The effect of key reactor variables on the product yield and distribution of alkanes obtained from temperature-programmed reduction （TPR） of samples have been investigated. A combination of high hydrogen pressure （ 〉 10MPa）, slow heating rate （5℃/min） and use of a dispersed sulfided molybdenum catalyst represents the best regime for achieving high conversions to dichloromethane-soluble oil while minimizing the structural rearrangement of biomarker species. It is considered that catalytic hydropyrolysis is an analytical technique for biomarker released from kerogen in high yield and fewer carbon skeletal rearrangement. The experimental results showed that these primary components in the molecular skeleton of kerogen can be released rationally by catalytic hydropyrolysis treatment, and can be obtained well application in oil/oil correlation, oil/source correlation, the sedimentary environment of organic matter in oil pools, the secondary reconstruction of pools and other researches. To some oil pools subjected serious paulopost degradation, these components especially possessed important significance in the study of restoring original geochemical information.
出处
《化学通报》
CAS
CSCD
北大核心
2006年第5期337-341,共5页
Chemistry
基金
国家自然科学基金(40472076)
北京市教委(XK114140479)资助项目
关键词
沉积有机质
干酪根
催化加氢热解
索氏抽提
生物标志化合物
Sedimentary organic matter, Kerogen, Catalytic hydropyrolysis,Soxhelt extraction,Biomarkers
