Search
Now showing items 1-10 of 1790
Recent Advances in Using Niobium Compounds as Catalysts in Organic Chemistry
(Bentham Science Publ Ltd, 2015-01-01)
Niobium is not found in nature in its free form, but usually in the form of oxides and usually with the tantalum element. The largest niobium reserves are in Brazil. The use of niobium compounds in organic synthesis has ...
Kinetics of thermal decomposition of niobium hydride
(ELSEVIER SCI LTDOXFORD, 2012-01)
High-purity niobium powders can be obtained from the well-known hydride-dehydride (HDH) process. The aim of this work was the investigation of the structural phase transition of the niobium hydride to niobium metal as ...
Composite membrane of niobium(V) oxide and cellulose acetate: Preparation and characterization
(Academic Press Inc Jnl-comp SubscriptionsSan Diego, 1997)
The Growing Impact of Niobium in Organic Synthesis and Catalysis
(Aldrich Chemical Co Inc, 2012-01-01)
The growing interest in, and applications of, niobium compounds in organic synthesis and catalysis are surveyed, with a focus on their efficiency and versatility in several classical and broad organic reaction types. It ...
The Growing Impact of Niobium in Organic Synthesis and Catalysis
(Aldrich Chemical Co Inc, 2012-01-01)
The growing interest in, and applications of, niobium compounds in organic synthesis and catalysis are surveyed, with a focus on their efficiency and versatility in several classical and broad organic reaction types. It ...
The growing impact of niobium in organic synthesis and catalysis
(2012-04-26)
The growing interest in, and applications of, niobium compounds in organic synthesis and catalysis are surveyed, with a focus on their efficiency and versatility in several classical and broad organic reaction types. It ...
Effect of impurities on mechanical relaxation in niobium
(ABM, ABC, ABPol, 2003-12)
Measurements of internal friction as a function of temperature were performed in samples of Nb containing different amounts of substitutional (Zr) and interstitial (O, N) solutes. These data were resolved using the method ...
On the formation of niobium carbide ceramics
(Sao Paulo: Associacao Brasileira de Ceramica, 2000, 2014)