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Ⅰ类生油岩人工熟化热解动力学及热解气相色谱研究
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作者 吴肇亮 邬立言 +1 位作者 杨国华 钱家麟 《石油学报》 EI CAS CSCD 北大核心 1992年第1期30-36,共7页
本文对含有Ⅰ类干酪根的扶16-02井(埋深355.9m)的未成熟生油岩样品进行了一系列人工熟化,得到了具有不同成熟度的样品。对这些熟化样品,用Ⅱ型岩石评价仪(Rock-EvalⅡ)进行了热解常规分析,用Ⅰ型岩石评价仪(Rock-EvalⅠ)进行了热解模拟... 本文对含有Ⅰ类干酪根的扶16-02井(埋深355.9m)的未成熟生油岩样品进行了一系列人工熟化,得到了具有不同成熟度的样品。对这些熟化样品,用Ⅱ型岩石评价仪(Rock-EvalⅡ)进行了热解常规分析,用Ⅰ型岩石评价仪(Rock-EvalⅠ)进行了热解模拟实验,并用热解气相色谱仪进行了热解产物组成分析。对于热解模拟实验数据,按串联一级反应动力学模型(Friedman方法)进行处理,得到了一系列热解分析指标和热解生烃动力学参数,揭示了热解产物组成随生油岩成熟度变化的规律以及演化过程中干酪根结构和热解反应本质的变化。 展开更多
关键词 生油层 动力学 气相色谱法 腐泥质
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Dicyandiamide Sorption-Desorption Behavior on Soils and Peat Humus 被引量:14
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作者 ZHANGHai-Jun WUZhi-Jie ZHOUQi-Xing 《Pedosphere》 SCIE CAS CSCD 2004年第3期395-399,共5页
The sorption-desorption behavior of dicyandiamide (DCD) is an importantchemical process that affects DCD fate and mobility in soils. Therefore, this study quantified DCDsorption-desorption on a phaeozem (Mollisol), a ... The sorption-desorption behavior of dicyandiamide (DCD) is an importantchemical process that affects DCD fate and mobility in soils. Therefore, this study quantified DCDsorption-desorption on a phaeozem (Mollisol), a burozem (Alfisol), a soil with organicmatter-removed and peat humus using the batch-equilibration procedure, and identified soilproperties that influenced DCD sorption. The sorption on peat humus was higher than that on thephaeozem and the burozem, with much lower sorption observed on the soil with organic matter-removed,indicating that soil organic matter was the main carrier of DCD sorption. Due to its amphipathicproperty the DCD molecule sorption on the phaeozem and the burozem decreased as pH increased fromabout 2 to 5, but a further increase in pH led to a rise in DCD sorption. The DCD desorptionhysteretic effect for peat humus was greater than that for the phaeozem and the burozem using 0.01mol L^(-1) CaCl_2 as the background electrolyte, suggesting that the hydrophobic domains of organicmatter may play an important role in DCD sorption. 展开更多
关键词 DICYANDIAMIDE peat humus soil sorption-desorption behavior
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Investigations on the Thermodynamic Stability and Availability of Nutrients for Plants by Humic Substances Extracted from Peat Samples
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作者 Camila De Almeida Melo Lilian Karla De Oliveira Bruno Barboza Cunha Leonardo Femandes Fraceto Andre Henrique Rosa 《Journal of Environmental Science and Engineering(A)》 2015年第7期367-377,共11页
This work evaluated the complexation capacity, exchange constants and availability of micronutrients for plants and humic substances extracted from peat samples. Samples of humic substances extracted from two tropical... This work evaluated the complexation capacity, exchange constants and availability of micronutrients for plants and humic substances extracted from peat samples. Samples of humic substances extracted from two tropical peats (HS-P1 and HS-P2) were enriched with the micronutrients Cu(II), Co(II), Fe(II), Mn(II), Ni(II) and Zn(II) and the parameters for formation of the complexes (HS-N) were evaluated at different pH. The Scatchard model was used to calculate the maximum complexation capacity and the nutrient availability was studied using exchange capacity experiments based on ultrafiltration procedure. The optimum pH for complexation was 4.5 and the order of affinity was: Fe(II) 〉 Cu(II) 〉 Co(II) 〉 Mn(II) = Ni(II) 〉 Zn(II). The maximum complexation capacity reached 56.8 mg·g-1 Fe of HS-P1 (the highest) and 1.7 mg.g1 Zn of HS-P2 (the slightest). The exchange experiments showed that HS-P-Fe complexes were formed preferentially. The least stable complex was formed with Zn, which was therefore, more easily available. The results contribute to understand the behavior and availability of some nutrients in soils. 展开更多
关键词 Peat humic substances COMPLEXATION nutrient availability exchange capacity soil
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一种易燃的低热值燃料-油页岩
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《煤炭科学技术》 CAS 1978年第6期58-,共1页
英明领袖华主席对充分利用我国的低热值燃料十分重视,并一再指示要充分利用褐煤、石煤、煤矸石和油页岩等低热值燃料。油页岩也叫油母页岩,它是一种由腐泥质形成的含页岩类矿物质较多,但又较易燃烧的低热值固体可燃矿物。从我国的油页... 英明领袖华主席对充分利用我国的低热值燃料十分重视,并一再指示要充分利用褐煤、石煤、煤矸石和油页岩等低热值燃料。油页岩也叫油母页岩,它是一种由腐泥质形成的含页岩类矿物质较多,但又较易燃烧的低热值固体可燃矿物。从我国的油页岩资源分布特征来看,有不少是和煤共生的,其中大部分和年轻煤共生,有的直接作为煤层的顶底板,也有与煤成互层赋存。从油页岩资源的分布地区来看,除西南区尚未发现外, 展开更多
关键词 油页岩资源 低热值燃料 腐泥质 西南区 页岩油 湖泊相 三迭纪 泥煤 全硫含量 高灰分
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