Electrochemical conversion of CO2 to useful chemical intermediates may be a promising strategy to help reduce CO2 emissions, while utilizing otherwise wasted excess renewable energy. Here we explore the effect of diluted CO2 streams (10–100% by volume using N2 as diluting inert gas) on the product selectivity and on the CO/CO2 conversion ratio for the electrochemical reduction of CO2 into CO, s...

The conversion of mangrove forest to aquaculture ponds has been increasing in recent decades. One of major concerns of this habitat loss is the release of stored 'blue' carbon from mangrove soils to the atmosphere. In this study, we assessed carbon dioxide (CO₂) efflux from soil in intensive shrimp ponds in Bali, Indonesia. We measured CO₂ efflux from the floors and walls of shrimp ponds. Rates...

The catalytic oxidation of toluene over copper oxide supported on natural diatomite was investigated. The catalyst was prepared by the wet impregnation method and characterized by using the Brunauer Emmett Teller (BET), field emission Scanning Electron Microscopy (FESEM), X-ray diffraction (XRD), X-ray fluorescence (XRF) and Temperature-programmed reduction (TPR) analysis. The highest catalytic ...

The catalytic oxidation of toluene over copper oxide supported on natural diatomite was investigated. The catalyst was prepared by the wet impregnation method and characterized by using the Brunauer Emmett Teller (BET), field emission Scanning Electron Microscopy (FESEM), X-ray diffraction (XRD), X-ray fluorescence (XRF) and Temperature-programmed reduction (TPR) analysis. The highest catalytic ...

This paper compares different coating methods (in situ solid combustion, hybrid deposition, secondary growth on seed, suspension, double deposition of wet impregnation and suspension) to deposit Ce0.2Zr0.8O₂ mixed oxides on cordierite substrates, for use as a three way catalyst. Among them, the double deposition was proven to be the most efficient one. The coated sample shows a BET (Brunauer-Em...

In this work, the catalytic activities of several single metallic oxides were studied for the treatment of propylene, a component in motorcycles' exhaust gases, under oxygen deficient conditions. Amongst them, CeO₂ is one of the materials that exhibit the highest activity for the oxidation of C₃H₆. Therefore, several mixtures of CeO₂ with other oxides (SnO₂, ZrO₂, Co₃O₄) were tested to investig...

Context. We investigate non-Zeeman circular polarization and linear polarization levels of up to 1% of 12CO spectral line emission detected in a shocked molecular clump around the supernova remnant (SNR) IC 443, with the goal of understanding the magnetic field structure in this source. Aims. We examine our polarization results to confirm that the circular polarization signal in CO lines is cau...

This paper presents the synthesis and characterization of monometallic and bimetallic cobalt and iron nanoparticles supported on alumina. The catalysts were prepared by a wet impregnation method. Samples were characterized using temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), CO-chemisorption, transmission electron microscopy (TEM), field emission scanning electr...

an extensive study of higher alcohol synthesis (has) from synthesis gas using cobalt (co) promoted alkalized mos2 catalysts supported on carbon nanotubes (cnts) is reported. up to  5wt.% of co is added to the 15wt.% mo-wt.%k/ cnts by incipient wetness impregnation method. most of the metal particles were homogeneously distributed inside the tubes and the rest on the outer surface of the cnts. t...

In numerous vital industrial, medical and defence applications the translational movements are performed by linear electric motors. In such applications both the linear motor and its power converter should be fault tolerant. To fulfil this assignment redesigned motor structures with novel phase connections must be used. In the paper a three-phase fault-tolerant modular variable reluctance linea...