徳島大学 教育・研究者情報データベース(EDB)

1. 徳島大学.大学院社会産業理工学研究部.理工学域.応用化学系.化学プロセス工学分野(2017年4月1日〜)
2. 徳島大学.創成科学研究科.理工学専攻.応用化学システムコース(創成科学研究科).化学プロセス工学講座(創成科学研究科)(2020年4月1日〜)

1. 杉山 茂

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2. (英) Koizumi Akihiko / (日) 幸泉 旭彦 / (読) こいずみ あきひこ

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   学籍番号	推奨	****

3. (英) Iwaki Takahisa / (日) 岩城 昴尚 / (読) いわき たかひさ

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   学籍番号	推奨	****

4. 霜田 直宏([徳島大学.大学院社会産業理工学研究部.理工学域.応用化学系.化学プロセス工学分野]/徳島大学.理工学部.理工学科.応用化学システムコース.化学プロセス工学講座/徳島大学.工学部.化学応用工学科.化学プロセス工学講座/徳島大学.先端技術科学教育部.物質生命システム工学専攻.化学機能創生コース.化学プロセス工学講座)

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5. (英) Kato Yuki / (日) 加藤 裕樹 / (読) かとう ゆうき

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6. (英) Ninomiya Wataru / (日) 二宮 航 / (読) にのみや わたる

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(英) Enhancement of the Catalytic Activity Associated with Carbon Deposition Formed on NiO/Al2O3 During the Dehydrogenation of Ethane and Propane

(英) In the recent study, the dehydrogenation of isobutane to isobutene was accomplished using a NiO/ -Al2O3 catalyst, and significant improvement in the time-on-stream yield of isobutene was accomplished. During the normal catalytic dehydrogenation of alkanes, the catalyst is covered by the carbon deposition that is generated during the reaction, which drastically reduces activity with time-on-stream. Therefore, no examples of the catalytic dehydrogenation of isobutane have yet been reported. This study used either ethane or propane as a source of isobutane to examine whether the activity was improved with time-on-stream. As a result, in the dehydrogenations of both ethane and propane on a NiO/ -Al2O3 catalyst, the catalytic activity decreased with time-on-stream when the supporting amounts of NiO was small. By contrast, when the supporting amount of NiO was large, the catalytic activity improved with time-on-stream. The results using a NiO/ -Al2O3 catalyst with small and large NiO loadings were similar to those of isobutane dehydrogenation and it was confirmed that the dehydrogenation activity was improved with time-on-stream in the catalytic dehydrogenations of ethane, propane, and isobutane using large NiO loadings. Intermediate behavior using a moderate amount of NiO loading, which was not detected in the dehydrogenation of isobutane, was also observed, which resulted in a maximum yield of either ethylene or propylene at 2.0 or 3.25 h on-stream, respectively. We concluded that the reason the catalytic activity did not improve with time-on-stream when using a NiO/ -Al2O3 catalyst was because the supporting amount of NiO was too small. These results show that activity with time-on-stream could also be improved in the dehydrogenations of other alkanes.

1. (英) Dehydrogenation
2. (英) Ethane
3. (英) Propane
4. (英) Nickel Oxide
5. (英) Catalyst Deactivation