TiP2O7catalysts characterised by in situRaman spectroscopy during the oxidative dehydrogenation of n-butane
文献情報
S. Loridant, I. C. Marcu, G. Bergeret, J. M. M. Millet
The structural and chemical stability of TiP2O7 has been investigated by Raman spectroscopy under an n-butane–O2–He gas mixture (1∶1∶2). Titanium pyrophosphate powders with low and high specific surface areas have been characterised up to 560 °C. No structural transition or chemical decomposition was evidenced under the gas feed used. However, the overall intensity of the Raman spectrum decreased sharply at 400 °C in parallel with the deposition of disordered graphite at the surface and reappeared above 450 °C when the carboneous compound burned. This phenomenon was completely reversible on decreasing the temperature. The deposit appearing with the reduction of TiP2O7 could arise from the trapping of reaction intermediates by oxygen vacancies at the surface. Above 450 °C, the carboneous compound disappeared when the diffusion rate of oxygen vacancies increased. The same phenomenon was observed on high surface area TiP2O7 for which supplementary bands assigned to surface modes were observed.
関連文献
Synthesis of poly(ethylene glycol)-supported manganese porphyrins: efficient, recoverable and recyclable catalysts for epoxidation of alkenes
Maurizio Benaglia, Tamara Danelli, Gianluca Pozzi
DOI: 10.1039/B210985A
Nitrophenyl derivatives of pyrrole 2,5-diamides: structural behaviour, anion binding and colour change signalled deprotonation
Salvatore Camiolo, Philip A. Gale, Michael B. Hursthouse, Mark E. Light
DOI: 10.1039/B210848H
Direct defluorinative amidation–hydrolysis reaction of gem-difluoroalkenes with N,N-dimethylformamide, and primary and secondary amines
Biyun Wang, Xianghu Zhao, Qingyun Liu, Song Cao
DOI: 10.1039/C8OB02322K
Preparation of a unique glucan with large intervals in molecular weight distribution. Controlled ring-opening polymerization of O-permethylcyclodextrin
Masato Suzuki, Tomofumi Shimazaki
DOI: 10.1039/B210122J
Base-catalyzed selective esterification of alcohols with unactivated esters
Chunyan Zhang, Guoying Zhang, Shizhong Luo, Chunfu Wang, Huiping Li
DOI: 10.1039/C8OB02411A
Inclusion behavior of water-soluble thiacalix- and calix[4]arenes towards substituted benzenes in aqueous solution
Noriyoshi Kon, Nobuhiko Iki, Sotaro Miyano
DOI: 10.1039/B210198J
Cyclic arylopeptoid oligomers: synthesis and conformational propensities of peptide-mimetic aromatic macrocycles
Masahide Hayakawa, Ayaka Ohsawa, Kumi Takeda, Ryo Torii, Yoshiaki Kitamura, Hiroshi Katagiri
DOI: 10.1039/C8OB01962B
Non-steady-state kinetic study of the SN2 reaction between p-nitrophenoxide ion and methyl iodide in aprotic solvents containing water. Evidence for a 2-step mechanism
Yun Lu, Kishan L. Handoo, Vernon D. Parker
DOI: 10.1039/B208635B
Characterization of binary solvent mixtures: the water–acetonitrile mixture
Francisco García-Blanco
DOI: 10.1039/B210405A
DNA recognition by the anthracycline antibiotic respinomycin D: NMR structure of the intercalation complex with d(AGACGTCT)2
Mark S. Searle, Allister J. Maynard, Huw E. L. Williams
DOI: 10.1039/B208622K
こちらもおすすめ
N,N-二乙基-4-ブロモナフサルレン-1-カルボニルアミドはどのように合成されますか?
N,N-二乙基-4-ブロモナフサルレン-1-カルボニルアミドは、4-ブロモナフサルビンとN,N-ジエチルアミド基を有する反応物を用いて合成されます。触媒の使用は...
大黄酚-8-O-葡萄糖苷の市場動向や研究トレンドはどうですか?
大黄酚-8-O-葡萄糖苷の市場は、医薬品、機能食品、研究化学物質としての需要が高まっています。特に、その抗炎症作用や抗ウイルス作用に関する研究が増えています。価...
アトラキュリウム不純物5塩酸塩の物理化学的性質は何ですか?
アトラキュリウム不純物5塩酸塩のCAS番号は2048273-58-9です。この化合物は結晶性であり、分子量は約435.4 g/molです。水に溶けやすく、反応性...
2-イソブチルシクロヘキサン酮とは何ですか?
2-イソブチルシクロヘキサン酮は、CAS番号39207-65-3の化合物で、化学式はC11H20Oです。この化合物は、有機合成化学において重要な原料として使用さ...
2-溴-6-甲基烟酸を取り扱う際の実験室安全事項は何ですか?
この化合物は毒性と刺激性があります。密閉されたドラフトチャンバー内で処理し、PPE(ゴーグル、手袋)を使用してください。漏洩時は即座に通気し、適切な漏洩処理材を...
6-アミノニコニタルデオキシド塩化水和物の物理化学的性質は何ですか?
6-アミノニコニタルデオキシド塩化水和物のCAS番号は1588441-31-9です。この化合物は結晶性粉末で、分子量は220.63 g/molです。水に溶けやす...
塩酸中毒藜碱はどのように合成されますか?
塩酸中毒藜碱は、ピペリジンとピリジンの反応により合成されます。具体的には、ピペリジンとピリジンを反応させ、塩基触媒を使用してピペリジン環内 enters 3-ピ...
Methyl 4-(6-formyl-2-pyridinyl)benzoateに適用される法規ガイドラインは何ですか?
この化合物はCAS番号834884-81-0で、GHS分類では高毒性の危険性を持つと見なされます。REACH規則では登録が求められ、FDA/EPAでは環境、健康...
1-エチynyル-3-(三氟甲氧基)ベンゼンについて「に適用される法規ガイドラインは何ですか」
CAS番号 866683-57-0の1-エチynyル-3-(三氟甲氧基)ベンゼンは、GHS分類では易燃性化学品が該当し、REACH規則では特定の危険性を評価する...
メチル2-ブロモイソニコネートの代替品はありますか?
メチル2-ブロモイソニコネートの代替品には、メチルイソニコネートや他のブロモ化合物が含まれます。これらの代替物は、特定の用途に応じて選択されます。
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.











![(2R)-2,7,8-Trimethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-6-chromanol structure (2R)-2,7,8-Trimethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-6-chromanol structure](https://static.chemtradehub.com/structs/54-/54-28-4-155c.webp)


![(2S)-{[(9H-Fluoren-9-ylmethoxy)carbonyl]amino}(phenyl)acetic acid structure (2S)-{[(9H-Fluoren-9-ylmethoxy)carbonyl]amino}(phenyl)acetic acid structure](https://static.chemtradehub.com/structs/102/102410-65-1-4aa7.webp)