Results 321 to 330 of about 1,072,756 (346)

Ammonium Perchlorate and Ammonium Dihydrogen Phosphate as Energetic Materials: Comparison to Ammonium Nitrate

The Journal of Physical Chemistry C, 2019
Ammonium perchlorate (NH4ClO4) and ammonium dihydrogen phosphate (NH4H2PO4) are investigated through laser ablation/matrix-assisted laser desorption ionization processes, anion photoelectron spectroscopy (PES), and density functional theory calculations. No parent anionic species are observed in the mass spectra of these two energetic species. Instead,
Zhen Zeng, Elliot R. Bernstein
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Characterization of ammonium absorption by ammonium-preferential cassava

Journal of Plant Physiology
Cassava plants can adapt to poor soils where most other crops are unable to grow normally, suggesting that they are able to efficiently uptake and utilize nutrient elements from the soils. However, little is known about the mechanism of nutrient efficiency in the crop.
Yu, Wang, Youquan, Xia, Lili, You, Yindi, Liu, Jixin, Zou, Qing, Xie, Xingyu, Jiang   +6 more
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Ammonium peroxogermanate and ammonium peroxotellurates structure

Ammonium peroxogermanate [(NH₄)₆[Ge₆(μ-OO)₆(μ-O)₆(OH)₆]·6H₂O] and ammonium peroxotellurate are modern as rare chemical compounds chemistry and materials in engineering wide is used . Due to their complex structures, high stability and versatility, these compounds are important in catalysis, semiconductors and other technological fields.
Sodikova, Manzura, Ataullayev, Zokir
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Ammonium

2009
Publisher Summary This chapter provides information on abbreviation, molecular formula, molar mass, structure, and applications of different compounds of ammonium. One of its compounds is tetramethylammonium bis((trifluoromethyl) sulfonyl)imide with abbreviation, [N1111][TFSI], and molar mass, 354.29.
Suojiang Zhang, Xiangping Zhang, Xiaohua Li, Xingmei Lu, Qing Zhou, Shucai Li   +5 more
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Thermal expansion of ammonium pertechnetate and ammonium perrhenate

Journal of Solid State Chemistry, 2019
Abstract The thermal expansion of NH4TcO4 and NH4ReO4 between 97 and 500 K has been established using variable temperature synchrotron X-ray diffraction. Both oxides display a tetragonal scheelite-type structure over the temperature range. The observed anomalous thermal expansion is associated with disorder in the orientation of the NH4 groups and ...
Brendan J. Kennedy, Michelle Yu, Helen E. A. Brand, Emily Reynolds, Emily Reynolds, Gordon J. Thorogood, Frederic Poineau   +6 more
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On the thermal conductivity of ammonium- and deutero-ammonium chloride

Physics Letters A, 1969
Abstract Measurements of the thermal conductivity of NH 4 - and ND 4 Cl for the temperature range 2°–300°K are presented. There is a first order phase transition in NH 4 - and probably a second order transition in ND 4 Cl.
W. Waidelich, W. Bausch
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Heterogeneous Reactions of Alkylamines with Ammonium Sulfate and Ammonium Bisulfate

Environmental Science & Technology, 2011
The heterogeneous reactions between alkylamines and ammonium salts (ammonium sulfate and ammonium bisulfate) have been studied using a low-pressure fast flow reactor coupled to an ion drift-chemical ionization mass spectrometer (ID-CIMS) at 293 ± 2 K. The uptake of three alkylamines, i.e., monomethylamine, dimethylamine, and trimethylamine, on ammonium
Lin Wang, Chong Qiu, Vinita Lal, Alexei F. Khalizov, Renyi Zhang   +4 more
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Energetics of ammonium cyanide and of some ammonium halides

Transactions of the Faraday Society, 1970
An analysis of the energetics of the structure of ammonium cyanide has permitted a more detailed description of this substance than has been given hitherto. The crystal energies of ammonium chloride and ammonium bromide have been revised during the calculations, and a more precise value for the enthalpy of formation of the gaseous ammonium ion has been
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Phase transitions in ammonium and deutero-ammonium halides

Radiation Effects, 1970
Abstract Recent results obtained by dilatometric, calorimetric, X-ray, and NMR methods for the phase transitions in ammonium and deutero-ammonium halides are reported. The dilatometric observations on the kinetics of the transitions I-II of NH4Cl and NH4Br, and the effects of deuteration on the I-II transformation temperature and volume change, and on ...
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Precipitation of ammonium vanadate by ammonium chloride [PDF]

American Journal of Science, 1902
F. A. Gooch, R. D. Gilbert
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