Solubilities and solubilisation enthalpies of alkali metal uranates(VI) in carbonate melts
文献情報
A detailed investigation of the dissolution of alkali metal uranates in carbonate melts has been performed for the first time. The solubilities are reported for three alkali metal (Li, Na and K) mono- and diuranates, between 723 and 1073 K in alkali metal carbonate mixtures, and ranged from 20 to 275 wt ppm. The solvents used were the carbonate eutectics Li–Na, Li–K and Li–Na–K, and the low melting carbonate liquid Na–K. The well-known V-shaped behaviour of the solubilities of binary oxides in molten sulfates and carbonates with basicity increase was here observed for mono- and diuranates(VI). The explanation in terms of acid–base behaviour holds, the acidity and solubilities decreasing initially with temperature increase and then reversing as the melt becomes more basic. Uranate dissolution is thus both a physical and chemical process and hence from these data the solubilisation enthalpy in both acidic and basic melts was obtained for all six uranates(VI) in the four melts. Further, the oxidation of UO2 to form uranates in molten carbonates must proceed by mass transfer of an oxidising species through a layer of uranates formed on the urania surface.
関連文献
Continuous nitration of alcohols in a Freon flow
Mikhail N. Zharkov, Svetlana S. Arabadzhi, Ilya V. Kuchurov, Sergei G. Zlotin
DOI: 10.1039/C9RE00035F
Decomposition kinetics for HONO and HNO2
Xi Chen, Mark E. Fuller, C. Franklin Goldsmith
DOI: 10.1039/C8RE00201K
All-aqueous continuous-flow RAFT dispersion polymerisation for efficient preparation of diblock copolymer spheres, worms and vesicles
Sam Parkinson, Nicole S. Hondow, John S. Conteh, Nicholas J. Warren
DOI: 10.1039/C8RE00211H
Ultra-low formation of octahydrophenazine in the Beckmann rearrangement of cyclohexanone oxime using a microreactor
Chencan Du, Yunpeng Hu, Jisong Zhang, Guangsheng Luo
DOI: 10.1039/C9RE00246D
Direct synthesis of acrylate monomers in heterogeneous continuous flow processes
Jatuporn Salaklang, Veronique Maes, Matthias Conradi, Rudy Dams
DOI: 10.1039/C7RE00120G
Inter-particle migration of Cu ions in physically mixed Cu-SSZ-13 and H-SSZ-13 treated by hydrothermal aging
Hwangho Lee, Inhak Song, Se Won Jeon, Do Heui Kim
DOI: 10.1039/C8RE00281A
Kinetic evaluation of the hydroformylation of the post-metathesis product 7-tetradecene using a bulky phosphite-modified rhodium catalyst
Nicholas C. C. Breckwoldt, Neill J. Goosen, Hermanus C. M. Vosloo, Percy Van der Gryp
DOI: 10.1039/C8RE00239H
Synthesis and molecular weight control of poly(3-hexylthiophene) using electrochemical polymerization in a flow microreactor
Masatsugu Mizuno, Hiroyuki Tateno, Yoshimasa Matsumura, Mahito Atobe
DOI: 10.1039/C7RE00089H
Design and testing of an operando-Raman annular reactor for kinetic studies in heterogeneous catalysis
Ali Maghsoumi, Andrea Ravanelli, Federico Consonni, Fabio Nanni, Andrea Lucotti, Matteo Tommasini, Alessandro Donazzi, Matteo Maestri
DOI: 10.1039/C7RE00092H
An autonomous self-optimizing flow machine for the synthesis of pyridine–oxazoline (PyOX) ligands
Eric Wimmer, Daniel Cortés-Borda, Solène Brochard, Elvina Barré, Charlotte Truchet, François-Xavier Felpin
DOI: 10.1039/C9RE00096H
こちらもおすすめ
間溴苯甲酰腈の市場動向や研究トレンドはどうですか?
間 brom 苯甲酰腈は、合成化学や薬物化学において重要な Intermediate として使用されています。市場動向としては、その合成性と機能性により、研究開...
Methyl 2-amino-5-(trifluoromethyl)benzoateに適用される法規ガイドラインは何ですか?
CAS番号117324-58-0の塩酸メチル2アミノ-5-トリフルオロメチルベンゼートは、GHS分類により腐食性物質と判定されます。REACH規則では、製造、販...
3-ブロモ-1,3,4,5-四水化-2H-1-ベンザアゼピン-2-オンは安全ですか?
毒性があるため、適切な安全対策が必須です。皮膚や粘膜への刺激性が強く、吸入や誤飲により健康被害を引き起こす可能性があります。取扱時にはガスマスクや手袋、眼鏡を使...
三氟甲基ピリジン-2-甲アミン塩酸塩は安全ですか?
三氟甲基ピリジン-2-甲アミン塩酸塩は安全性に注意が必要です。毒性は低レベルですが、直接的接触や吸入は避けるべきです。適切な手袋や防塵マスクを着用し、密閉された...
1-エチル-4-(4-硝基フェニル)ピペリジンは安全ですか?
1-エチル-4-(4-硝基フェニル)ピペリジンは有毒であり、取扱には注意が必要です。保管や作業中に手袋を着用し、目や皮膚に接触しないように注意する必要があります...
1,1-ジメトキシプロパン-2-オンは安全ですか?
1,1-ジメトキシプロパン-2-オンは一般的に低毒性ですが、皮膚や目への刺激性があるため、取扱いには注意が必要です。蒸気や液体の吸入には有害な可能性があり、適切...
コバルト(II) 3,3'-{[(1S,2S)-1,2-ジメチルフENCYCLICALE-1,2-エチエンジイル]ビス[ニトロリルメチルイリデン]}ビス[4-オキソ-2-ペンテン-2-olate]について「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259259-80-8に対応しています。GHS分類では、毒性、燃焼性、反応性、炎症性を考慮に入れ、適切な危険性分類が行われます。REACH...
「カーバミル酸, N-[8-[[2-[[2-(2,6-ジオキソ-3-ピペリジニル)-2,3-ジオキソ-1,3-ジヒドロ-1H-イソイソインドール-4-イルオキシ]アセチル]アミノ]オクチル]-1,1-ジメチレチルエステル」はどのように保存すればよいですか?
この化合物は、冷却庫で-20℃の温度、乾燥した容器に保管し、直日光から保護する必要があります。湿度の高い環境や高温は避けてください。
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.










![5-Methoxy-1H-pyrrolo[3,2-b]pyridine structure 5-Methoxy-1H-pyrrolo[3,2-b]pyridine structure](https://static.chemtradehub.com/structs/172/17288-40-3-a8d1.webp)



