00761nas a2200181   4500008004100000022001400041245014800055210006900203260000900272490000600281653003100287653002100318100002100339700003100360700003000391700002800421856013000449       2024                        eng d  a2398-490200aThe ex situ exsolved exsolved Ni-Ru alloy from nickel-ruthenium co-doped SrFeO perovskite as a potential catalyst for C=C and C=O hydrogenation0 aex situ exsolved exsolved NiRu alloy from nickelruthenium codope  cJUN 0 v810aLIQUID-PHASE HYDROGENATION10aOXIDE FUEL-CELLS1 aBhavisha, Meloth1 aBalamurugan, Sarkarainadar1 aGopinath, Chinnakonda, S.1 aSakthivel, Ayyamperumal  uhttps://library.ncl.res.in/content/ex-situ-exsolved-exsolved-ni-ru-alloy-nickel-ruthenium-co-doped-srfeo-perovskite-potential02334nas a2200241   4500008004100000022001400041245015100055210006900206260000800275490000700283520143700290653001901727653002501746653001801771653001101789653002101800100002101821700003101842700002901873700003001902700002801932856013201960       2025                        eng d  a1867-388000aCatalytic hydrogenation of cinnamaldehyde over nanocrystalline nickel-doped lanthanum aluminate: synergistic effect of nickel and oxygen vacancies0 aCatalytic hydrogenation of cinnamaldehyde over nanocrystalline n  cJUN0 v173 a<p>
	Nickel-doped lanthanum aluminium perovskite, LaAl1-xNixO3-delta with x = 0, 0.1, 0.2, 0.3, 0.4,0.5, 0.6, and 0.75 (LANx), were obtained through a combustion method followed by a calcination process. The obtained LANx materials crystallized in the cubic structure by the Pm-3m (221) space group. The nanocrystalline nature of the LANx materials was confirmed by the average crystalline size determined using Debye-Scherrer formula. X-ray photoelectron spectroscopy (XPS) studies showed that nickel was present in the +2 and +3 oxidation states. The introduction of nickel resulted in distinct peaks in TPR in the temperature range of 200-600 degrees C, with an enhanced reducibility of the materials. The LANx materials were thoroughly assessed for their effectiveness in the hydrogenation of cinnamaldehyde. The maximum catalytic activity (cinnamaldehyde conversion of 98% with a hydrocinnamylalcohol selectivity 96.5%) was observed with the presence of the LAN7 catalyst at 150 degrees C for 6 h at a H2 pressure of 10 bar. The catalytic activity is maintained even after four cycles, which broadens the application scope as the material is sustainable, scalable, cost-effective, and a potential alternative to reported noble metal catalysts. The synergistic effect of nickel and oxygen vacancies in the catalyst improves the reducibility and provides a promising catalytic activity in the cinnamaldehyde hydrogenation.</p>
10aCinnamaldehyde10aHydrocinnamylalcohol10aHydrogenation10aNickel10aPerovskite oxide1 aBhavisha, Meloth1 aBalamurugan, Sarkarainadar1 aVenkatesha, Naragalu, J.1 aGopinath, Chinnakonda, S.1 aSakthivel, Ayyamperumal  uhttps://library.ncl.res.in/content/catalytic-hydrogenation-cinnamaldehyde-over-nanocrystalline-nickel-doped-lanthanum-aluminate02525nas a2200217   4500008004100000022001400041245011700055210006900172260000900241300001400250490000700264520171900271100002101990700002202011700003002033700003102063700002902094700002602123700002802149856013002177       2026                        eng d  a1144-054600aEnhanced structural stability and selective furfural hydrogenation over Ru and Si co-doped SrFeO3-δ perovskites0 aEnhanced structural stability and selective furfural hydrogenati  cJUN   a9884-98930 v503 a<p>
	Doping of SrFeO3-delta with transition and non-transition elements provides a powerful route to modulate its physicochemical properties. In this investigation, a series of ruthenium and silicon co-doped SrFeO3-delta (SrFe0.95-xRu0.05SixO3-delta) samples were prepared via the sol-gel combustion method using hexamine as fuel. The doped samples crystallized in the cubic structure with the Pm3m (221) space group. The presence of Si4+, Fe3+, Fe4+ and Ru4+ in the SrFe0.95-xRu0.05SixO3-delta sample was confirmed by XPS analysis. The presence of an EPR signal at g = 1.9393 and the temperature-programmed desorption of oxygen (TPD-O2) analyses validated the presence of oxygen vacancies. The ruthenium and silicon co-doped SrFeO3-delta effectively hydrogenates biomass-derived platform molecule furfural with 95% conversion and exhibits 88% furfuryl alcohol selectivity at 185 degrees C for 6 h under 30 bar H2 pressure. The spent ruthenium-doped SrFeO3-delta (SrFe0.95Ru0.05O3-delta) catalyst exhibited a phase transformation from the cubic perovskite structure to the brownmillerite phase with the exsolution of the metallic ruthenium species. The exsolution of metallic ruthenium can be correlated with the formation of secondary products, viz., non-selective hydrogenation leads to tetrahydrofurfuryl alcohol, furan, and methylfuran. Ruthenium and silicon co-doped perovskite oxide showed selectivity towards furfuryl alcohol with the retention of its original cubic perovskite structure. This modification of perovskite oxide with ruthenium and silicon demonstrates a highly effective strategy for engineering stable and chemo-selective catalysts for the sustainable upgrading of platform chemicals.</p>
1 aBhavisha, Meloth1 aJoseph, Arsha, P.1 aGopinath, Chinnakonda, S.1 aBalamurugan, Sarkarainadar1 aVenkatesha, Naragalu, J.1 aGanesh, Venkatachalam1 aSakthivel, Ayyamperumal  uhttps://library.ncl.res.in/content/enhanced-structural-stability-and-selective-furfural-hydrogenation-over-ru-and-si-co-doped