A basic investigation in brazing was undertaken to study of the dissolution of iron base metal in copper brazing filler metal. Cylinders of iron material were immersed in molten copper and then rotated under dynamic conditions of peripheral velocities from 18.3 to 58.6 cm/sec in the temperature ...
The algorithm is demonstrated for reaction mechanism elucidation of transition metal catalysts. We highlight how to explore catalytic cycles in a systematic and reproducible way. The exploration objectives are fully adjustable, allowing one to harness the STEERING WHEEL for both structure-specific (...
From the reaction of ZnCl and HgCl metal salts with ()-4-chloro--(pyridine-2-ylmethylene)benzeneamine (L) in methanol solution, two binuclear Schiff base complexes were prepared. Both complexes were characterized by elemental analysis, UV–Vis, and IR spectrophotometry. X-ray crystal structure ...
Alloy eutectoids can be divided into two classes: those which originate through the allotropy of the base metal and those which are associated with the decomposition of an intermediate phase (Spencer and Mack 1962). Eutectoids in Fe-, Ti- and Zr-based alloys are examples that belong to the...
Reaction of the method of a metal piece rigidly attached to a thermoplastic base, and electrical contact is made of metal and is made of thermoplastic material.A metallic piece 14 is logee in a notch provided in a support made of a thermoplastic material 12, and the assembly is assembled ...
Nanoscopic systems can also act as highly efficient catalysts; examples are found in (metallo)enzymes1,2, (metal)-organic frameworks (MOFs)3,4,5, and encapsulated catalysts6,7. A detailed understanding of chemical processes in nanoscopic systems by elucidation of their reaction mechanisms at an ...
Sol-gel synthesis is a poly condensation of metal alkoxides hydrolyzed with water (Eqs. (2) and (3)). A commonly used Si-precursor for C-S-H synthesis is tetraethyl orthosilicate (TEOS). (2)SiOEt4+nH2O→SiOEt4‐nOHn+nEtOH (3)2SiOEt4−nOHn→OEt4−nSi−O−SiOEt4−n+H2O Pro...
A combination reaction is a type of chemical reaction where two reactants bond together to produce one product. An example of a combination reaction is the reaction between the metal calcium and oxygen to produce calcium oxide.Answer and Explanation: ...
Transition-metal catalysis of the Michael reaction of 1,3-dicarbonyl compounds with acceptor-activated alkenes is introduced as a valuable alternative to the classic base catalysis of this reaction. Owing to the mild, neutral reaction conditions, the chemoselectivity of these processes is superior to ...
Competing Pathways in the Reaction of Bis(pentafluorophenyl)borane with Bis(<IMG src="http://www3.interscience.wiley.com/giflibrary/12b/eta.gif" border=0><SUP><FONT size=-1>5</FONT></SUP>-cyclopentadienyl)dimethylzirconium: Methane Elimination versus Methyl-Hydride Exchange and an Example of ...