On decoupling rate processes in chemical reaction systems - Methods and applications
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In recent years, chemometric methods for the analysis of multivariate kinetic data have considerably progressed. Kinetic hard-modelling is one of these methods that is based on the rate law and used to determine the kinetic parameters (e.g. rate constants) ...
The reaction of 1-bromo-3-halo-2-iodobenzene (I; X = Cl) with butyllithium gives 62% (II; X = Cl) similarly reaction of [I; X = F(III)] gave 64% II (X = F). These reactions involve the immediate intermediacy of the halolithiobiphenyl (IV) and the penultima ...
This thesis deals with a laboratory study of heterogeneous reactions involving bromine and chlorine containing reservoir species on alkali salt substrates which are relevant to the marine boundary layer, and on ice substrates which are relevant to the lowe ...
The synthesis of the alkoxide [OC(tBu)(CF3)2]− by the reaction of tBuM-reagents (M = Li; MgX) with hexafluoroacetone was attempted. This alkoxide was anticipated to be a good building block for novel weakly coordinating anions. However, in all attempted sy ...
The reaction of aldehydes, amines and TMSCN in the presence of 2-iodoxybenzoic acid (IBX) and tetrabutylammonium bromide (TBAB) afforded alpha -iminonitriles, e.g. 4-MeOC6H4C(C==N):NCH2CH2Ph, in good to excellent yields under mild conditions. The presence ...
Following several tragic chemical accidents that have occurred in recent years, some directives concerning chemical process safety have been issued. The Seveso directive, for example, requires a precise description of the consequences of a possible chemica ...
We investigated the reaction chemistry of metal contacts to GaN during annealing using X-ray photoelectron spectroscopy (XPS). GaN decomposition was estimated, using XPS, to occur in N-2 annealed Ni-alloy contacts at 550 degreesC. The reaction was greatly ...
Nitrous oxide is the third most important gas contributing to global warming and its concentration in the atmosphere is still on the rise. Nitric acid production represents the largest source of N2O in the chemical industry, with a total annual emission of ...
Three-component reaction of an alpha -(isocyano)acetamide, a homoallyl amine and an aldehyde in methanol at room temp. provides an oxa-bridged tricyclic compd. in good to excellent yield as a mixt. of two separable diastereoisomers. In this one-pot multico ...
Batch experiments were conducted to determine whether sub-ppb concentrations of dissolved Cr(VI) could be achieved by redox-assisted coagulation with Fe(II). in this process Fe(II) acts as a reductant for Cr(VI) and, after its oxidation to Fe(Ill), as a co ...
