This article reported a novel low-temperature process for aromatics production through lignin depolymerization catalyzed by 0.1 wt% Pd-zeolite Y catalyst prepared by a facile method. Under the same reactive condition, the as-prepared Pd-zeolite Y catalysts exhibited much higher catalytic efficiency than zeolite Y or commercial Pd/Al2O3–zeolite composites. The selectivity of the Pd-zeolite Y tow...

This experimental study aims to examine the partial discharge (PD) properties of palm oil and coconut (CO) based aluminum oxide (Al2O3) nanofluids with without surfactants. The type surfactant used in this was sodium dodecyl sulfate (SDS). volume concentrations range Al2O3 dispersed samples varied from 0.001% 0.05%. ratio surfactants nanoparticles set 1:2. In total, two different types refined,...

Catalytic combustion is an environmentally benign technology which has recently reached the stage of commercialization. Palladium is the catalyst of choice when considering gas turbines fuelled with natural gas because of its superior activity for methane oxidation. Several fundamental issues are still open and their understanding would result in an improvement of the technology. Hence, the wor...

One of the key factors for producing highly dispersed controlled nanoparticles is method used metal deposition. The decomposition metal-organic precursors a good deposition with very small sizes and narrow size distributions on surface various supports. preparation process Pd bimetallic Pd-Sn supported onto ?-Al2O3 considered. samples were prepared by diffusional co-impregnation support using o...

Hydrometallurgical recovery of nano-palladium (Pd) from spent Pd/Al2O3 catalyst has been investigated. The Pd content in the spent catalyst sample was assayed to be 0.42% while the remainder was mainly aluminum oxide. Mixture of HCl and AlCl3 was studied as leaching agent for the sample. The Pd was deposited with formic acid. Different parameters affecting leaching and deposition processes such...

The aim of this study was to investigate the adhesive property of palladium-silver alloy (Pd-Ag) and the simulated clinical performance of Pd-Ag porcelain-fused-to-metal (PFM), resin-bonded, fixed partial dentures (RBFPDs). A total of 40 Pd-Ag discs (diameter=5 mm) were prepared and divided into the following four groups (n=10): a) No sandblasting, used as a control; and b, 50 µm; c, 110 µm; an...

X-ray absorption spectroscopy and X-ray diffraction are suitable probes of the chemical state of a catalyst under working conditions but are limited to bulk information. Here we show in two case studies related to hydrothermal aging and chemical modification of model automotive catalysts that enhanced detailed information of structural changes can be obtained when the two methods are combined w...

Low temperature wet methane oxidation is critical for the after-treatment of exhaust from vehicles powered with natural gas-fueled engine, which always operated at low temperatures and high water vapor concentrations. Herein, Pd/Ba-Al2O3 catalysts were prepared, different amount Ba as promoter. It was found that superior to reference Ba-free Pd/Al2O3 catalyst in terms conversion, intrinsic acti...