Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Dorin V. Preda"'
Autor:
James C. Hower, John G. Groppo, Prakash Joshi, Dorin V. Preda, David P. Gamliel, Daniel T. Mohler, John D. Wiseman, Shelley D. Hopps, Tonya D. Morgan, Todd Beers, Michael Schrock
Publikováno v:
Minerals, Vol 10, Iss 2, p 105 (2020)
In this study, Central Appalachian coal-derived fly ashes from two power plants were beneficiated in a pilot-scale facility in order to produce a product with a relatively consistent concentration of rare earth elements (REE). The 3, which were dimin
Externí odkaz:
https://doaj.org/article/a02021a2328d496c8ae7688decba8fec
Autor:
John D. Wiseman, John G. Groppo, Prakash Joshi, Dorin V. Preda, James C. Hower, David P. Gamliel, Daniel T. Mohler, Todd Beers, Michael Schrock, Tonya Morgan, Shelley D. Hopps
Publikováno v:
Minerals
Volume 10
Issue 2
Minerals, Vol 10, Iss 2, p 105 (2020)
Volume 10
Issue 2
Minerals, Vol 10, Iss 2, p 105 (2020)
In this study, Central Appalachian coal-derived fly ashes from two power plants were beneficiated in a pilot-scale facility in order to produce a product with a relatively consistent concentration of rare earth elements (REE). The <
200-mesh f
200-mesh f
Autor:
Todd Beers, John G. Groppo, Tonya Morgan, Dorin V. Preda, Prakash Joshi, James C. Hower, Robert B. Jewell, Shelley D. Hopps, Anne E. Oberlink, Kevin R. Henke, Michael Schrock, David P. Gamliel, John D. Wiseman, Tristana Y. Duvallet
Publikováno v:
Fuel. 295:120562
Beneficiated fly ash from the combustion of Central Appalachian high volatile bituminous coals was extracted with HNO3 in a pilot-scale processing plant. Several major oxides (notably CaO and SO3, but also including Fe2O3, MgO, K2O, and P2O5) and min
Autor:
Prakash Joshi, John G. Groppo, Dorin V. Preda, Madison M. Hood, James C. Hower, Uschi M. Graham, Kevin R. Henke
Publikováno v:
Coal Combustion and Gasification Products. 9:1-21
Publikováno v:
Organic letters. 18(16)
Two distinct structural elements that render π-systems nonplanar, i.e., geodesic curvature and helical motifs, have been combined into new polyarenes that contain both features. The resultant corannulene–[n]helicenes (n = 5, 6) show unique molecul
Autor:
Dorin V. Preda, Lawrence T. Scott, Tuvia Sheradsky, Mihail Bancu, Mordecai Rabinovitz, Ivan Aprahamian, Roy E. Hoffman
Publikováno v:
Angewandte Chemie International Edition. 41:1712-1715
Autor:
Dorin V. Preda, Lawrence T. Scott
Publikováno v:
Polycyclic Aromatic Compounds. 19:119-131
Acylation of a polycyclic aromatic hydrocarbon (PAH) adjacent to a ring junction with 2-bromobenzoyl chloride followed by Flash Vacuum Pyrolysis (FVP) of the resulting bromoketone affords the corresponding indeno-annulated PAH. The new method is illu
Publikováno v:
Journal of the American Chemical Society. 123:8573-8582
Fe+ has been attached to buckminsterfullerene, C(60), and corannulene, C(20)H(10), in the gas phase, and the reactivities of C(60)Fe+ and C(20)H(10)Fe+ have been measured with several small inorganic and organic molecules in helium bath gas at 0.35 T
Autor:
Dorin V. Preda, Roland Thissen, Helmut Schwarz, Jessica Loos, Diethard K. Bohme, Lawrence T. Scott, Doina Caraiman, Detlef Schröder, Maxim V. Frach
Publikováno v:
Helvetica Chimica Acta. 84:1625-1634
Electron-transfer processes that involve single and doubly charged cations of corannulene (C20H10) and coronene (C24H12) are examined by three different mass-spectrometric techniques. Photoionization studies give first-ionization energies of IE(C20H1
Autor:
Lawrence T. Scott, Dorin V. Preda
Publikováno v:
Tetrahedron Letters. 41:9633-9637
Dihalocarbenes (:CCl2, :CBr2, and :CI2) add preferentially to one of the radial double bonds of corannulene, rather than to the rim. These cyclopropanations strongly resemble the additions of dihalocarbenes to fullerenes, which likewise occur at 6:6-