The design of efficient hydrogen-evolving photocathodes for dye-sensitized photoelectrochemical cells (DSPECs) requires the incorporation of molecular light absorbing chromophores that are capable of delivering reducing equivalents to molecular proton reduction catalysts at rates exceeding those of charge recombination events. Here, we report the functionalization and kinetic analysis of a nano...

Research is being actively conducted to improve the carbon deposition and sintering resistance of Ni-based catalysts. Among them, Al2O3-supported Ni catalyst has been broadly studied for dry reforming reaction due its high CH4 activity at beginning reaction. However, there a problem deactivation Ni/Al2O3 Ni, which catalytically active material. Supplementing MgO in can result an improved MgAl2O...

Al2O3 ceramics were successfully brazed under high vacuum conditions using the active Ni50Ti50 master alloy at 1320 °C with different holding time. The interfacial microstructure of joint was characterized SEM, EDS and TEM. effects time on evolution mechanical properties joints investigated. results revealed that typical structure Al2O3/Ni–Ti for 45 min Al2O3/AlNi2Ti + Ni2Ti4O/Ni2Ti4O/TiNi. Ni2...

The design of efficient hydrogen-evolving photocathodes for dye-sensitized photoelectrochemical cells (DSPECs) requires the incorporation of molecular light absorbing chromophores that are capable of delivering reducing equivalents to molecular proton reduction catalysts at rates exceeding those of charge recombination events. Here, we report the functionalization and kinetic analysis of a nano...

Preferential oxidation (PROX) of CO is the most efficient way to remove CO from reformate streams for PEM fuel cells. Pt/Al2O3 has long been used for this purpose. Pt/Al2O3 catalysts are effective for preferential oxidation of CO only at temperatures above 150°C, and the maximum CO conversion usually takes place at around 200°C. In this study, promotion of Pt/Al2O3 with transition metals result...

Particulate Al2O3 matrix nanocomposites containing 1 vol.%Ni were prepared by the heterogeneous precipitation method and addition of 5 vol.% ZrO2 (ANZ) or Cr2O3 (ANC). The samples subjected to low energy drop weight impact tests compare behaviour composites under investigate damage mechanisms. pure Al2O3, Al2O3/Ni, Al2O3/ZrO2 Al2O3/Cr2O3 compositions with same additive ratios also produced make...

Different Ni-based oxygen carriers were prepared by dry impregnation using -Al2O3 as support. The reactivity, selectivity during methane combustion, attrition rate and agglomeration behaviour of the oxygen carriers were measured and analyzed in a termogravimetric analyzer and in a batch fluidized bed during multicycle reductionoxidation tests. * Manuscript