01482nas a2200265   4500008004100000022001400041245011200055210006900167260007300236300001000309490000800319520051300327653002400840653002800864653002100892653002300913653002800936653002100964653002600985100001901011700002001030700001701050700001801067856013101085       2005                        eng d  a0926-860X00aRole of a co-metal in bimetallic Ni-Pt catalyst for hydrogenation of m-dinitrobenzene to m-phenylenediamine0 aRole of a cometal in bimetallic NiPt catalyst for hydrogenation   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a23-300 v2953 a<p>Bimetallic Ni-Pt catalysts supported on carbon were found to give very high turn over frequency numbers and almost complete selectivity to m-phenylenediamine in m-dinitrobenzene hydrogenation as compared to the monometallic nickel catalysts. The XRD and XPS characterization revealed that most of the nickel remains as Ni2+ in a monometallic catalyst while, the addition of platinum leads to the stabilization of Ni-0 state, in case of bimetallic catalysts. (c) 2005 Elsevier B.V. All rights reserved.</p>10aBimetallic catalyst10aCatalytic hydrogenation10am-dinitrobenzene10am-phenylenediamine10aSelective hydrogenation10aturn over number10aXPS and XRD of nickel1 aTelkar, M., M.1 aNadgeri, J., M.1 aRode, C., V.1 aChaudhari, R.  uhttps://library.ncl.res.in/content/role-co-metal-bimetallic-ni-pt-catalyst-hydrogenation-m-dinitrobenzene-m-phenylenediamine-001579nas a2200253   4500008004100000022001400041245008900055210006900144260007300213300001200286490000600298520067400304653001500978653002800993653002301021653002801044653002101072653002201093653003101115100002001146700001901166700001701185856012301202       2008                        eng d  a1566-736700aHydrogenation activity and selectivity behavior of supported palladium nanoparticles0 aHydrogenation activity and selectivity behavior of supported pal  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a441-4460 v93 a<p>Enhancement in activity and selectivity of catalytic hydrogenation using supported nanosize palladium catalyst has been investigated. Pd/C catalyst prepared in the presence of polyvinyl pyrrolidone (PVP) as a stabilizer gave Pd particle size in a narrow range of 3-5 nm. While, evaluating for hydrogenation of 2-butyne-1,4-diol, the rate enhancement was found to be 10 times higher as compared to the conventional (bulk) Pd catalysts. A proper choice of stabilizer (PVP) giving small particle size as well as highly dispersed nature of nano particles were the major factors for such a dramatic enhancement of activity. (c) 2007 Elsevier B.V. All rights reserved.</p>10abutynediol10aCatalytic hydrogenation10ananosize palladium10aSelective hydrogenation10aSEM-EDX analysis10asize distribution10asupported Pd nanoparticles1 aNadgeri, J., M.1 aTelkar, M., M.1 aRode, C., V.  uhttps://library.ncl.res.in/content/hydrogenation-activity-and-selectivity-behavior-supported-palladium-nanoparticles-0