Results 291 to 300 of about 143,050 (344)
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Journal of the American Chemical Society, 2008
Porous crystals are strategic materials with industrial applications within petrochemistry, catalysis, gas storage, and selective separation. Their unique properties are based on the molecular-scale porous character.
Jasmina Hafizovic Cavka +6 more
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Porous crystals are strategic materials with industrial applications within petrochemistry, catalysis, gas storage, and selective separation. Their unique properties are based on the molecular-scale porous character.
Jasmina Hafizovic Cavka +6 more
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Creep of Zirconium and Zirconium Alloys
Metallurgical and Materials Transactions A, 2006Cumulative zirconium and zirconium alloy creep data over a broad range of stresses (0.1 to 115 MPa) and temperatures (300 °C to 850 °C) were analyzed based on an extensive literature review and experiments. Zirconium obeys traditional power-law creep with a stress exponent of approximately 6.4 over stain rates and temperatures usually associated with ...
T.A. Hayes, Michael E. Kassner
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A refined zirconium-in-rutile thermometer
American Mineralogist, 2020The zirconium-in-rutile thermometer enjoys widespread use, but confidence in its accuracy is limited because experiments were conducted at higher temperatures than many rutile-bearing rocks and calibration uncertainties have not been quantitatively ...
M. Kohn
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Angewandte Chemie, 2018
Single atoms immobilized on metal-organic frameworks (MOFs) with unique nanostructures have drawn tremendous attention in the application of catalysis but remain a great challenge.
T. He +8 more
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Single atoms immobilized on metal-organic frameworks (MOFs) with unique nanostructures have drawn tremendous attention in the application of catalysis but remain a great challenge.
T. He +8 more
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Determination of Zirconium in Zirconium Metal and Zirconium Powder [PDF]
, 1965 Abstract : An accurate method is proposed for the determination of zirconium in zirconium metal and zirconium powder. The sample is dissolved in a mixture of hydrofluoric, nitric, perchloric, and sulfuric acids, the solution is evaporated to dryness, the salts are dissolved in dilute hydrochloric acid, mandelic acid is added, the solution is heated at ...
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Refractory Diborides of Zirconium and Hafnium
, 2007This paper reviews the crystal chemistry, synthesis, densification, microstructure, mechanical properties, and oxidation behavior of zirconium diboride (ZrB2) and hafnium diboride (HfB2) ceramics.
W. Fahrenholtz +3 more
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Corrosion of Zirconium and Zirconium Alloys
2005Abstract This article provides a description of the classification, industrial applications, microstructures, physical, chemical, corrosion, and mechanical properties of zirconium and its alloys. It discusses the formation of oxide films and the effects of water, temperature, and pH on zirconium. The delayed hydride cracking of zirconium
Te-Lin Yau, Richard C. Sutherlin
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Zirconium Borohydride as a Zirconium Boride Precursor
Journal of the American Ceramic Society, 1988Synthesis of zirconium boride, ZrB2, from zirconium borohydride, Zr(BH4)4, has been explored by a variety of methods, including chemical vapor deposition (CVD) in a hot tube, laser CVD with both continuous‐wave (cw) and pulsed lasers, and cw‐laser synthesis of fine powders. In all cases, ZrB2 was the only crystalline product identified.
Richard L. Woodin, Gary W. Rice
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Angewandte Chemie, 2012
In nature, metalloporphyrins are well known for performing many biological functions in aqueous media, such as light harvesting, oxygen transportation, and catalysis. Heme, the iron–porphyrin derivative, is the cofactor for many enzyme/ protein families,
Dawei Feng +5 more
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In nature, metalloporphyrins are well known for performing many biological functions in aqueous media, such as light harvesting, oxygen transportation, and catalysis. Heme, the iron–porphyrin derivative, is the cofactor for many enzyme/ protein families,
Dawei Feng +5 more
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Zirconium and Zirconium Alloys
2018Fundamental properties of all metallic elements are covered systematically and comprehensively in Chap. 4. This chapter describes zirconium as both a pure and a low-alloying element of metallic materials in Sects. 8.1 and 8.2. The further sections cover its main applications, in nuclear technology (Sect.
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