A study by electrical conductivity measurements of the semiconductive and redox properties of Nb-doped NiO catalysts in correlation with the oxidative dehydrogenation of ethane
文献情報
Ionel Popescu, Zinovia Skoufa
Nb-doped nickel oxides with Nb contents in the range from 1 to 20% and, for comparison, pure NiO, were characterized using in situ electrical conductivity measurements in correlation with their catalytic performances for the oxidative dehydrogenation (ODH) of ethane into ethylene. Their electrical conductivity was studied as a function of temperature and oxygen partial pressure and was followed with time during sequential exposures to air, ethane–air mixture (reaction mixture) and pure ethane in conditions similar to those of catalysis. All the oxides were p-type semiconductors under air. Their electrical conductivity in the reaction temperature range decreased in the following order: NiO > Nb(1)NiO > Nb(5)NiO > Nb(10)NiO > Nb(15)NiO > Nb(20)NiO. This correlates well with the catalytic activity expressed as the intrinsic rate of ethane consumption. All the catalysts were partially reduced under the reaction mixture in the reaction temperature range, an inverse correlation between their conductivity in these conditions and the ODH selectivity being observed. The ODH reaction of ethane takes place via a heterogeneous redox mechanism involving the surface lattice O− species.
関連文献
A combined experimental and computational study of NHC-promoted desulfonylation of tosylated aldimines
Fang Sun, Tingrui Yin, Yang Wang, Anni Feng, Liuqing Yang, Wenchao Wu, Chenxia Yu, Tuanjie Li, Donghui Wei, Changsheng Yao
DOI: 10.1039/C9QO01402K
Transition-metal-free synthesis of CMe2CF3-containing chroman-4-ones via decarboxylative trifluoroalkylation
Wei Liu, Hua-Yue Wu, Yun-Bing Zhou, Qiuping Ding, Yiyuan Peng
DOI: 10.1039/C9QO01283D
Wilsonglucinols A–C, homoadamantane-type polycyclic polyprenylated acylphloroglucinols with unusual fused epoxy ring skeletons from Hypericum wilsonii
Shuangshuang Xie, Changxing Qi, Yulin Duan, Xincai Hao, Yi Guo, Mengyi Deng, Yuben Qiao, Zhengyi Shi, Li Tao, Yunfang Cao, Lianghu Gu, Yuan Zhou, Yonghui Zhang
DOI: 10.1039/C9QO01158G
Cu-catalyzed C–N bond cleavage of 3-aminoindazoles for the C–H arylation of enamines
Yao Zhou, Ya Wang, Zhiyi Song, Tamaki Nakano
DOI: 10.1039/C9QO01177C
Copper-catalyzed [4 + 2] annulation reaction of β-enaminones and aryl diazonium salts without external oxidant: synthesis of highly functionalized 3H-1,2,4-triazines via homogeneous or heterogeneous strategy
Mingrui Li, Yiming Sun, Yang Yu
DOI: 10.1039/C9QO01413F
Synthesis of unsymmetrical diarylmethanols via C–Si bond bifunctionalization enabled by sequential [1,4]-Csp2 to O-silyl migration
Tianbao Hu, Liying Huang, Lu Gao, Zhenlei Song
DOI: 10.1039/C9QO01450K
Reaction engineering and photophysical studies of fully enriched C-vinyl-1,2,3-triazoles
G. Surendra Reddy, Dhevalapally B. Ramachary
DOI: 10.1039/C9QO00864K
こちらもおすすめ
噻奈普汀乙酯の物理化学的性質は何ですか?
CAS番号66981-77-9の噻奈普汀乙酯は、結晶性白色粉末であり、分子量は476.9 g/molです。この化合物は水に溶けにくく、一般的には有機溶媒で溶解し...
アミピシリン不純物Fとは何ですか?
アミピシリン不純物Fは、CAS番号124774-48-7の化合物です。これは、抗生物質アミピシリンの生産過程で生成される不純物の一つであり、(4S)-2-({[...
イリジウム(I)ヘキサフルオロフォスファートの代替品はありますか?
イリジウム(I)ヘキサフルオロフォスファートの代替品として、他の有機金属化合物や非有機金属化合物が使用されることがあります。具体的には、ダイゾニウム塩や他の金属...
含有3-(苯氧基甲基)苯硼酸频那醇酯の廃棄物はどのように処理すべきですか?
含有3-(苯氧基甲基)苯硼酸频那醇酯の廃棄物は、安全な方法で処理する必要があります。まず、廃棄物を適切な容器に収集し、避けて保管します。次に、専門の廃棄処理業者...
2-甲基辛-1-醇を取り扱う際の実験室安全事項は何ですか?
取り扱う際は、密閉のゴーグルと手袋を着用することが推奨されます。ドラフトチャンバーを使用し、漏洩時には速やかに取り扱いを中止し、適切な排気設備を使用してください...
3α-アセトキノイドコレステロールエステルはどのように保存すればよいですか?
3α-アセトキノイドコレステロールエステルは、常温から低温(0-5℃)の暗所で保存し、密閉容器に入れることで安定性を保つことが推奨されます。また、湿気や酸素から...
2-ぶンジロキシ-4-(トリフルオロメチル)フェノルビノン酸の主な用途は何ですか?
2-ぶンジロキシ-4-(トリフルオロメチル)フェノルビノン酸は、化学合成の触媒としての使用や、医薬品の合成材料としての役割があります。また、特定の合成路線で使用...
(2S,3R)-2-氨基-3-甲基丁二酸はどのように合成されますか?
(2S,3R)-2-氨基-3-甲基丁二酸は、2-ヒドロキシ-3-メチル丁酸とアミノ化反応を行うことで合成されます。触媒としてジクロロメタンが使用され、選択性と収...
1-Benzyl-2-phenyl-1H-imidazoleはどのように保存すればよいですか?
この化合物は常温で避けてください。直射日光を避け、密閉容器で保存し、湿気を防水の容器に入れて保管してください。
掲載誌
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.














![Methyl 8-azabicyclo[3.2.1]octane-3-carboxylate hydrochloride structure Methyl 8-azabicyclo[3.2.1]octane-3-carboxylate hydrochloride structure](https://static.chemtradehub.com/structs/179/179022-43-6-77f5.webp)