Showing papers on "Nickel boride published in 1985"
TL;DR: Sodium hydrogen telluride opens many epoxides cleanly by an SN2 process to give telluro-alcohols, which by reduction with nickel boride afford alcohols as mentioned in this paper.
24 citations
TL;DR: Nickel boride reductive cleavage of allylic trimethylsilyl ethers yielding alkenes was described in this paper, where it was shown that the reduction is reversible.
18 citations
Patent•
14 Jun 1985TL;DR: A method for forming an iron alloy article having increased toughness comprises compacting and sintering a powder mixture composed of predominantly iron powder and carbon powder and containing a powder of a liquating nickel boride compound as discussed by the authors.
Abstract: A method for forming an iron alloy article having increased toughness comprises compacting and sintering a powder mixture composed of predominantly iron powder and carbon powder and containing a powder of a liquating nickel boride compound. Limited nickel diffusion into the iron structure during sintering produces metastable retained austenite in regions about pores in the product structure that retards crack formation and thereby improves mechanical properties.
13 citations
TL;DR: In this article, the authors converted Haloketones and vic-dibromides to corresponding ketones and alkenes respectively with nickel boride generated in situ from sodium borohydride and nickel chloride.
12 citations
TL;DR: In this article, the authors used nickel boride as the bond being cleaved becomes a better leaving group (e.g. OCH3 ).
12 citations
Patent•
17 Apr 1985
TL;DR: Nickel boride hydrogenation catalysts stabilised with polyvinylpyrrolidone, having constant excellent quality, are prepared by incorporating glycerol mono-oleate before the alcohol is evaporated off as discussed by the authors.
Abstract: Nickel boride hydrogenation catalysts stabilised with polyvinylpyrrolidone, having constant excellent quality, are prepared by incorporating glycerol mono-oleate before the alcohol is evaporated off
9 citations
TL;DR: The P-2W catalyst is more reactive than the P-1 or P2 in the hydrogenation of cyclohexanone and nitrobenzene as mentioned in this paper.
Abstract: Water washing of P-2 nickel boride brings about a new catalyst designated as P-2W nickel boride. This P-2W catalyst is more reactive than P-1 or P-2 in the hydrogenation of cyclohexanone and nitrobenzene. The P-2W, however, is less selective than P-2 in the hydrogenation of cyclic olefins.
6 citations
TL;DR: Nickel boride, readily produced in situ from nickel chloride hexahydrate and sodium borohydride, efficiently reduces selenides to hydrocarbons under mild conditions as discussed by the authors.
Abstract: Nickel boride, readily produced in situ from nickel chloride hexahydrate and sodium borohydride, efficiently reduces selenides to hydrocarbons under mild conditions.
Patent•
18 Oct 1985
TL;DR: Nickel boride hydrogenation catalysts stabilised with polyvinylpyrrolidone, having constant excellent quality, are prepared by incorporating glycerol mono-oleate before the alcohol is evaporated off.
Abstract: Nickel boride hydrogenation catalysts stabilised with polyvinylpyrrolidone, having constant excellent quality, are prepared by incorporating glycerol monooleate before the alcohol is evaporated off.
TL;DR: In this paper, direct experimental observation has been used for the first time to study the process of low-temperature formation of borides in composite electrolytic coatings, where the boride formation process is accompanied by dislocational transformation of nickel grains from cloudlike intertwined arrays to a cellular structure.
Abstract: Direct experimental observation has been used for the first time to study the process of low-temperature formation of borides in composite electrolytic coatings. During the codeposition of nickel and boron, crystallostructural disturbances are produced as a result of the formation of cloudlike intertwined dislocation arrays and twinning of nickel. With amorphous boron, the experimentally established temperature threshold of nickel boride formation is 400°C. The boride formation process is accompanied by dislocational transformation of nickel grains from cloudlike intertwined arrays to a cellular structure. During the formation of borides the shape of the grains of the boron-containing phase changes from branched (in the starting condition) to spheroidal. The growth of Ni3B grains in boride rosettes is accompanied by the formation of a boride skeleton in the coating structure.