まとめ
想定に反して,大量のアンモニアム・窒素は,石油シェールやシェール鉱物の中で固定されています. フィッシャー測定法によるリトルティングは,有機的および固定アンモニア・窒素の両方の損失を引き起こし,有機窒素の損失がより大きい.
科学分野:
- 地質化学 地質化学
- オーガニック・ジオケミストリー オーガニック・ジオケミストリー
- ミネラロジーは,鉱物学です.
背景:
- 以前の研究では,石油シェイルの窒素は有機窒素としてのみ存在すると考えられていた.
- また,リートートされたシェール窒素が炭火やコークスに存在すると考えられていた.
研究 の 目的:
- グリーン・リバー・フォーメーション (Green River Formation) のオイルシェールと使用済みシェールに存在する窒素の形態を調査する.
- リトルティング中に異なる窒素形態の運命を決定するために.
主な方法:
- 原油および使用済み油页岩のサンプルにおける窒素含有量の分析.
- フィッシャーアッセイのリトルティング中の窒素損失の評価.
主要な成果:
- 原油シェイルの窒素の41~84%は,シリケート鉱物内の固定アンモニアム窒素である.
- 発火したシェイルの窒素の46~69%も固定アンモニア・窒素である.
- フィッシャーアッセイのリトルティングは,有機的および固定アンモニア・窒素の両方の損失につながります.
- 有機窒素は,固定アンモニア-窒素と比較して,再歪曲中により大きな割合の損失を示します.
結論:
- オイルシェイルの窒素組成は,これまで考えられていたよりも複雑で,有意な固定アンモニア・窒素を含んでいます.
- リトルティングプロセスは,有機的および無機的窒素分子の損失をもたらします.
- 窒素の特異性を理解することは,石油シェール処理と環境影響評価の最適化に不可欠です.
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