輸送用燃料を環境条件下でゼオライトで脱硫する

Ralph T Yang¹, Arturo J Hernández-Maldonado, Frances H Yang

¹Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA. yang@umich.edu

Science (New York, N.Y.)

|July 5, 2003

まとめ

銅と銀ゼオライトYは,室温と圧力で燃料から硫黄を効率的に除去します. この新しい方法は,よりクリーンな輸送用燃料と燃料電池の優れた硫黄容量と選択性を提供します.

科学分野:

マテリアルサイエンス材料科学
化学工学は化学工学というものです.
環境科学環境科学

背景:

厳格な規制により,輸送用燃料の深層の脱硫が求められる.
現在の脱硫方法はエネルギーが集約され,高圧と高温を必要とする.
既存の技術は,厳しい硫黄の制限値を費用対効果的に満たすのに苦労しています.

研究の目的:

輸送用燃料の深層脱硫のための費用対効果の高い効率的な方法を開発する.
Cu+とAg+ゼオライトYの硫黄化合物の吸収剤としての可能性を調査する.
高い硫黄吸収能力と環境条件での選択性を実証する.

主な方法:

Cu+とAg+を用いて,ゼオライトYを吸収剤として交換した.
商用ディーゼル燃料からの硫黄化合物の吸収は,環境温度と圧力で行われます.
分析技術を用いて硫黄含有量の減少を定量化する.
吸収剤容量と燃料の処理量を測定する.

主要な成果:

商用ディーゼル燃料からの硫黄化合物の選択的吸収を達成した.
硫黄含有量が430ppmから0.2ppm未満に低下した.
吸収剤の1グラムあたり34cm3のクリーンディーゼルという高い吸収剤容量を示した.
観測された硫黄の選択性と容量は,以前の吸収剤よりも数桁高い.

結論:

Cu+とAg+ゼオライトYは,深層燃料脱硫に高度に効果的な吸着剤です.
この方法は,現在の技術に対する低コストでエネルギー効率の良い代替案を提供します.
この吸着剤の高性能は,将来の燃料電池アプリケーションの可能性を広げています.

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