Influence of pyrite on hydrocarbon generation during pyrolysis of type-III kerogen
Influence of pyrite on hydrocarbon generation during pyrolysis of type-III kerogen
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黄铁矿对Ⅲ型干酪根热解生烃的影响
DOI：
10.1016/j.fuel.2015.11.069
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发表时间：
2016-03
期刊：
影响因子：
7.4
通讯作者：
Ye Xiyan
中科院分区：
文献类型：
--
作者：
Ma Xiangxian;Zheng Jianjing;Zheng Guodong;Xu Wang;Qian Yu;Xia Yanqing;Wang Zuodong;Wang Xiaofeng;Ye Xiyan
从准噶尔盆地选取了一个含有III型干酪根的煤样，研究了在250℃、300℃、350℃和400℃下分别在250℃、300℃、350℃和400℃下分别无水热解和不添加黄铁矿72h的产气情况。在这些实验中产生的气体被定量收集并分析其化学成分和碳的稳定同位素。固体残留物也被定量收集，并用穆斯堡尔光谱分析铁的形态。结果表明，黄铁矿的催化作用可显著提高有机质的生烃能力。对生成的碳氢化合物也进行了评估：(1)黄铁矿使气态烃和沥青的生成量分别增加了0.5-1.0倍和0.2-1.0倍；(2)由于黄铁矿的催化，沥青的生成峰前移了50℃；(3)添加的黄铁矿在300℃加热后转化为磁黄铁矿和硫，表明黄铁矿可能间接作为催化剂和/或通过硫直接作为诱导剂，进一步促进自由基的形成和碳氢化合物的生成。
One coal sample containing type-III kerogen was selected from the Junggar Basin and investigated for gas generation using anhydrous pyrolysis either or not added pyrite at 250 °C, 300 °C, 350 °C and 400 °C for 72 h each. The gases generated in these experiments were quantitatively collected and analyzed for chemical compositions and stable isotopes of carbon. The solid residues were also quantitatively collected and analyzed for iron species using Mössbauer spectroscopy. The results showed that hydrocarbon generation from organic matters would be significantly increased by catalysis of pyrite. The produced hydrocarbons were also evaluated with the following observations: (1) the generation of gaseous hydrocarbons and bitumen can be potentially increased by 0.5–1.0 times and 0.2–1.0 times due to pyrite, respectively; (2) the peak generation of bitumen was shifted forward by 50 °C due to the catalysis of pyrite; and (3) the added pyrite was conversed into pyrrhotite and sulfur since heating temperature at 300 °C, indicating that pyrite may act indirectly as a catalytic agent and/or directly as an inducer via sulfur, and further enhance free radicals’ formation and hydrocarbons generation.
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影响因子：
3
作者：
Qingtao Wang;Hong Lu;P. Greenwood;Chenchen Shen;Jinzhong Liu;P. Peng
通讯作者：
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影响因子：
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作者：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
5.3
作者：
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