A Ru-based half sandwich complex used in amine and alcohol racemization reactions was found to be active in the splitting of secondary amines to primary amines using NH3. Conversions up to 80% along with very high selectivities were achieved. However, after about 80% conversion the catalyst lost activity. Similar to Shvo's catalyst, the complex might deactivate under the influence of ammonia. I...

The anode electro-oxidation of methanol is central to the operation of Direct Methanol Fuel Cells (DMFC), which have the potential to become the fastest growing next generation mobile power sources. While Pt and Pt-based catalysts are known for their effectiveness in methanol activation, they are also most susceptible to catalyst poisoning by reaction intermediates such as CO. A second or even ...

the olefins polymerization process in a slurry reactor is discussed. the reaction rate dynamics was analyzed and the contributions of feed flow, gas-liquid mass transfer, polymerization reaction, and catalyst deactivation were estimated. the propylene solubility in a solvent mixture “heptane” was calculated using soave-redlich-kwong equation of state. these data were then approximated by henry-...

CO2 methanation has been evaluated as a means of storing intermittent renewable energy in the form of synthetic natural gas. A range of process parameters suitable for the target application (4720 h-1 to 84 000 h-1 and from 160oC to 320oC) have been investigated at 1 bar and H2/CO2 = 4 over a 10 % Ru/γ-Al2O3 catalyst. Thermodynamic equilibrium was reached at T ≈ 280oC at a GHSV of 4720 h-1. Cyc...

Non-thermal plasma activation has been used to enable low-temperature water-gas shift over a Au/CeZrO4 catalyst. The activity obtained was comparable with that attained by heating the catalyst to 180 °C providing an opportunity for the hydrogen production to be obtained under conditions where the thermodynamic limitations are minimal. Using in situ diffuse reflectance infrared Fourier transform...

Sulfonic acid functionalized mesoporous SBA-15 materials were prepared using the co-condensation and grafting methods, respectively, and their catalytic performance in the dehydration of xylose to furfural was examined. SBA-15-SO3H(C) prepared by the co-condensation method showed 92–95% xylose conversion and 74% furfural selectivity, and 68–70% furfural yield under the given reaction conditions...

One of the significant processes crude oil refining process is fluid catalytic cracking (FCC) unit. This unit produces olefins and other feedstock for petrochemical industry as well high octane gasoline, naphtha, light cycle oil, heavy oil. Attrition one forms catalyst deactivation on FCC which affects its operation, thereby giving rise to a amount makeup compensate losses in this study investi...

The complexes RuCl(2)(PCy(3))(2)(=CHPh), 1, and RuCl(2)(PCy(3))(H(2)IMes)(=CHPh), 2, proved to be active catalysts for the self-metathesis of oleate-type fatty compounds containing the ester, hydroxyl, epoxy and carboxylic acid functional groups. At elevated reaction temperatures 2 showed a higher activity, stability and lower selectivity for primary metathesis products compared to 1. A profoun...

Addition of only 1% of acetylene into ethanol was found to enhance the growth rate of singlewalled carbon nanotubes (SWNTs) by up to ten times. Since acetylene is a byproduct of the thermal decomposition of ethanol, this suggests an alternative fast reaction pathway to the formation of SWNTs from ethanol via byproducts of decomposition. This accelerated growth, however, only occurred in the pre...