The Room Temperature Decomposition Mechanism of Dimethyl Methylphosphonate (DMMP) on Alumina-Supported Cerium Oxide − Participation of Nano-Sized Cerium Oxide Domains

2004 ◽  
Vol 108 (5) ◽  
pp. 1634-1645 ◽  
Author(s):  
Mark B. Mitchell ◽  
Viktor N. Sheinker ◽  
Woodrow W. Cox ◽  
Enid N. Gatimu ◽  
Aron B. Tesfamichael
Keyword(s):  
Cerium Oxide ◽  
Room Temperature ◽  
Decomposition Mechanism ◽  
Dimethyl Methylphosphonate ◽  
Temperature Decomposition

scholarly journals Room temperature decomposition of dimethyl methylphosphonate on cuprous oxide yields atomic phosphorus

2019 ◽  
Vol 680 ◽  
pp. 75-87 ◽  
Author(s):  
Lena Trotochaud ◽  
Ashley R. Head ◽  
Christin Büchner ◽  
Yi Yu ◽  
Osman Karslıoğlu ◽  
...  
Keyword(s):  
Cuprous Oxide ◽  
Room Temperature ◽  
Dimethyl Methylphosphonate ◽  
Temperature Decomposition

Sustained Room Temperature Decomposition of Dimethyl Methylphosphonate (DMMP) by O3 on Alumina-Supported MnOx

2011 ◽  
Vol 115 (23) ◽  
pp. 11514-11524 ◽  
Author(s):  
Mark B. Mitchell ◽  
Viktor N. Sheinker ◽  
Woodrow W. Cox ◽  
Kenneth Hardcastle
Keyword(s):  
Room Temperature ◽  
Dimethyl Methylphosphonate ◽  
Temperature Decomposition

Thermal Cycling Behavior of Lanthanum-Cerium Oxide Thermal Barrier Coatings Prepared by Air Plasma Spraying

2007 ◽  
Vol 336-338 ◽  
pp. 1759-1761 ◽  
Author(s):  
Wen Ma ◽  
Yue Ma ◽  
Sheng Kai Gong ◽  
Hui Bin Xu ◽  
Xue Qiang Cao
Keyword(s):  
Cerium Oxide ◽  
Plasma Spraying ◽  
Thermal Barrier Coatings ◽  
Bond Coat ◽  
Room Temperature ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Air Plasma Spraying ◽  
Cyclic Testing ◽  
Barrier Coatings

Lanthanum-cerium oxide (La2Ce2O7, LC) is considered as a new candidate material for thermal barrier coatings (TBCs) because of its low thermal conductivity and high phase stability between room temperature and 1673K. The LC coatings with different La2O3 contents were prepared by air plasma spraying (APS) and their lifetime was evaluated by thermal cyclic testing from room temperature to 1373 K. The structures of the coatings were characterized by XRD and SEM and the deviation of the composition from the powder was determined by EDS analysis. Long time annealing for the freestanding coating at 1673K reveals that the near stoichiometric LC coating is stable up to 240h, and the stability decreases with increasing the deviation from stoichiometric LC composition. During thermal cyclic testing, spallation was observed within the top coat near the bond coat. It is considered that the effect of intrinsic stress caused by the coefficient of thermal expansion (CTE) mismatch between top coat and bond coat is larger than that of thermally grown oxide (TGO) and the bond adherence of top coat with TGO.

Decomposition of Dimethyl Methylphosphonate (DMMP) on Supported Cerium and Iron Co-Impregnated Oxides at Room Temperature

2003 ◽  
Vol 107 (2) ◽  
pp. 580-586 ◽  
Author(s):  
Mark B. Mitchell ◽  
Viktor N. Sheinker ◽  
Aron B. Tesfamichael ◽  
Enid N. Gatimu ◽  
Maya Nunley
Keyword(s):  
Room Temperature ◽  
Dimethyl Methylphosphonate

Enhanced dimethyl methylphosphonate detection based on two-dimensional WSe2 nanosheets at room temperature

The Analyst ◽  
2020 ◽  
Vol 145 (24) ◽  
pp. 8059-8067
Author(s):  
Bolong Li ◽  
Xinwei Chen ◽  
Chen Su ◽  
Yutong Han ◽  
Huaizhang Wang ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Performance ◽  
Room Temperature ◽  
Two Dimensional ◽  
Dimethyl Methylphosphonate

A high performance gas sensor based on two-dimensional WSe2 nanosheets was fabricated for dimethyl methylphosphonate detection at room-temperature.

scholarly journals High-temperature decomposition of Cu2BaSnS4 with Sn loss reveals newly identified compound Cu2Ba3Sn2S8

2020 ◽  
Vol 8 (22) ◽  
pp. 11346-11353
Author(s):  
José A. Márquez ◽  
Jon-Paul Sun ◽  
Helena Stange ◽  
Hasan Ali ◽  
Leo Choubrac ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperatures ◽  
Fluorescence Analysis ◽  
Decomposition Mechanism ◽  
Temperature Decomposition

The decomposition mechanism of Cu2BaSnS4 is studied by in situ diffraction and fluorescence analysis revealing “Sn loss” and Cu2Ba3Sn2S8 at high temperatures.

Photoactivation of silver loaded on titanium(IV) oxide for room-temperature decomposition of ozone

1993 ◽  
Vol 71 (2) ◽  
pp. 195-198 ◽  
Author(s):  
B. Ohtani ◽  
S.-W. Zhang ◽  
T. Ogita ◽  
S. Nishimoto ◽  
T. Kagiya
Keyword(s):  
Room Temperature ◽  
Temperature Decomposition

scholarly journals Formation of metastable calcite-type barium carbonate during low-temperature decomposition of (Ba,Ti)-precursor complexes

2019 ◽  
Author(s):  
Roberto Köferstein
Keyword(s):  
Room Temperature ◽  
Barium Carbonate ◽  
Intermediate Formation ◽  
Partial Substitution ◽  
Structural Domains ◽  
Temperature Decomposition ◽  
Xrd Phase Analysis ◽  
Ir Analysis ◽  
Intergrowth Structures ◽  
Perovskite Type

(Ba,Ti)-precursor complexes, important for the production of advanced BaTiO3 perovskite-type materials, undergo structural transformations and complex reactions during their thermal decomposition. Based on XRD phase analysis, combined with Rietveld refinement of crystal structure data, and on IR analysis, the intermediate formation of calcite-type BaCO3 is evidenced, which can be explained by the stabilization of this metastable modification in the form of an oxycarbonate phase down to room temperature. Two possible processes, leading to such an oxycarbonate, are discussed: (i) partial substitution of CO32− by O2− in the anionic sublattice, and (ii) topotaxial formation of calcite-type structural domains of BaCO3 by templating with oxygen-deficient titanates, resulting in the oxide–carbonate intergrowth structures.

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