Specific nickel

Costa M, Heck JD. 1982. Specific nickel compounds as carcinogens. Trends Pharmacol Sci 3 408-410. 

The effect of neutral salts (e.g., NaCl) on the composition of borates precipitated from, or in equilibrium with, aqueous solutions doubtless arises from a reduction in water activity, metal borate complexation, and a shift in polyborate equilibria (Sections IV,A, B). The "indifferent or inert component method has frequently been used for the synthesis of borates. Potassium and sodium chlorides can be used to enhance the precipitation of specific nickel (48), aluminum (51), iron (49), and magnesium (151) borates. In the K20-B203-H20 system at 25°C (248), the presence of potassium chloride results in a reduced boric acid crystallization curve, lower borate solubilities, lower pH, and an extended B203 K20 range over which the pentaborate crystallizes. 

Taniguchi, T., and Ogasawara, K. Facile and specific nickel-catalyzed D-N-allylation. Tetrahedron Lett. 39,4679 1682. 

The sulphidation of Mo(llO) is promoted by a series of admetals (Fe, Co, Ni, Cu, Ag and Zn) [19,20,57,58] that form sulphides that are less stable than those formed by molybdenum [42], Figure 19 displays Mo 3d XPS spectra acquired upon dosing S2 to Mo(l 10) and Mo(l 10) surfaces with similar coverages ( 1.5 ML monolayers ) of nickel [19], copper [16], zinc [20] and silver [16], These and other results [57,58] indicate that the amount of MoSx formed depends strongly on the nature of the admetal. Specifically, nickel and cobalt have a unique ability to promote Mo S interactions and the formation of molybdenum sulphide [19,57,58], Results for the reaction of S2 with a series of X/Mo(110) surfaces (X=admetal) indicate that the promotional effect of an admetal increases following the sequence Ag Zn < Cu < Fe < Co < Ni [19,57,58],... 

Alkylamines, such as butylamines, can be obtained by direct catalytic amination if the amination reaction is carried out in the presence of a fairly large excess of hydrogen. With specific nickel-, copper-, and cobalt-based catalysts which promote hydrogenation and dehydrogenation reactions, yields and conversions per pass of better than 95 per cent are obtained. See Sec. V for more detailed information on this procedure. 

MUTAGENESIS OF CHINESE HAMSTER OVARY CELLS BY SPECIFIC NICKEL COMPOUNDS... 

In humans with environmental, occupational, or iatrogenic exposures to nickel, the kinetics of nickel uptake, distribution, and elimination depend upon the physical and chemical properties of the specific nickel compound. 

Nickel Catalysts. The use of a Lewis base to convert an otherwise cis catalyst into a trans catalyst has already been demonstrated for nickel (212-214). Similarly, the cis-specific nickel catalyst can also be converted into a trans catalyst by replacing Ni-F complexes with Ni-I. Polymers obtained from these systems can have up to 97% trans content (262). 

A producer who has supplied a specific nickel alloy for many years will have developed the thermal and mechanical processing know-how for the alloy. Exp>erienced producers rely on statistical process control, coupled with sample testing to qualify their alloys. New producers may meet the ASTM compositional sp>ecifications for the alloys, but do not necessarily understand the thermal and mechanietd processing needed for creating the best metallui gical condition in the alloy. For new producers, corrosion acceptance testing of various product forms made from each heat of the alloy is usually necessary. 

Here, we report norbomene-ethylene copolymerization in the presence of specific nickel catalysts. Furthermore, we present some unpublished results concerning norbomene homopolymerization. 

Technical specifications Nickel-metal-hydride-cells... 

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