Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Randall L. Simpson"'
Autor:
Brady J. Clapsaddle, Joe H. Satcher, Björn Neumann, Marcus Bäumer, Randall L. Simpson, Arne Wittstock, Alexander E. Gash, David W. Sprehn
Publikováno v:
Journal of Sol-Gel Science and Technology. 64:381-389
Lanthanide oxide-based aerogels were synthesized employing the so-called epoxide addition sol–gel method already successfully applied for main- and transition metal oxide aerogels. Using chlorides and nitrates as precursors, our aim was to test the
Autor:
Andrew P. Saab, Long N. Dinh, Robert S. Maxwell, Julie L. Herberg, Sonia E. Létant, Randall L. Simpson
Publikováno v:
Catalysis Communications. 8:2137-2142
Palladium nanoparticles stabilized with polyhedral oligomeric silsesquioxanes have been characterized and determined to function as a heterogeneous catalyst. TEM and SEM studies indicate the material comprises 2–5 nm diameter Pd crystallites in a P
Publikováno v:
Journal of Non-Crystalline Solids. 350:145-151
The synthesis and characterization of nickel (II) oxide aerogel materials prepared using the epoxide addition method is described. The addition of the organic epoxide propylene oxide to an ethanolic solution of NiCl{sub 2} 6H{sub 2}O resulted in the
Publikováno v:
Journal of Non-Crystalline Solids. 350:173-181
The general synthesis of metal–silicon mixed-oxide nanocomposite materials, including a variety of both main group and transition metals, in which the metal oxide is the major component is described. In a typical synthesis, the metal-oxide precurso
Publikováno v:
Journal of Non-Crystalline Solids. 341:35-39
We report the synthesis and characterization for the first example of a low-density nanocrystalline thoria aerogel. The monolithic aerogels were prepared through the solgel polymerization of hydrated thorium nitrate in ethanol using ammonium hydroxid
Publikováno v:
Journal of Non-Crystalline Solids. 331:190-201
The synthesis of Fe–Si mixed oxide nanocomposite materials in which the iron(III) oxide is the major component is described. In a typical synthesis, the iron oxide precursor, FeCl3 · 6H2O, was mixed with a silica precursor, tetramethyl- or tetraet
Publikováno v:
Chemistry of Materials. 15:3268-3275
The synthesis of iron(III) oxide aerogel monoliths was performed by adding any one of several different 1,2- and 1,3-epoxides to ethanolic Fe(III) salt solutions at room temperature. While all of the epoxides examined resulted in gel formation, robus
Publikováno v:
Journal of Non-Crystalline Solids. 319:241-246
We report the synthesis and characterization for the first example of a low-density urania aerogel. The monolithic aerogels were prepared through the sol–gel polymerization of hydrated uranyl nitrate in ethanol using propylene oxide as a gelation i
Publikováno v:
Annual Review of Materials Research. 31:291-321
▪ Abstract Energetic materials are chemical compounds or mixtures that store significant quantities of energy. In this review, we explore recent approaches to property prediction and new material synthesis. We show how the successful design of new
Autor:
Alexander E. Gash, Randall L. Simpson, J. H. Satcher, Lawrence W. Hrubesh, J. F. Poco, Thomas M. Tillotson
Publikováno v:
Journal of Non-Crystalline Solids. 285:338-345
We have utilized a sol–gel synthetic approach in preparing nano-sized transition metal oxide components for new energetic nanocomposites. Nanocomposites of Fe 2 O 3 /Al(s), are readily produced from a solution of Fe(III) salt by adding an organic e