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Ab-initio process synthesis using evolutionary programming
10.1016/j.ces.2018.04.015 2018-04-11 Process synthesis methods enable the determination of unit operations and their interconnection into a process flowsheet, with associated design and operating parameters, and responding to given objectives. Modern methods are optimization-based, using for exa... |
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Effect of mass diffusion upon the thermal-diffusive behavior of a dry vibrated granular bed
10.1016/j.ces.2018.04.020 2018-04-11 We report the results of an experimental study on the thermal-diffusion mechanisms of particles with fluctuant motion in a dry granular system. Granular beds with different intensities of particle self-diffusion were produced by exerting vertical vibration-dr... |
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Facile mechanochemical modification of g-C3N4 for selective photo-oxidation of benzyl alcohol
10.1016/j.ces.2018.04.001 2018-04-03 Graphitic carbon nitride (CN) enriched with ZnO or Fe2O3 were synthesized using a simple one-pot mechanochemical method. By using this method, composite samples were synthetized without the production of any potentially hazardous waste. Synthesized materials ... |
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Hydrodynamic characteristics of particles with different roughness and deformability in a liquid fluidized bed
10.1016/j.ces.2018.03.058 2018-04-03 The effects of particle roughness and deformability on the fluid dynamics of liquid fluidized beds were investigated using a 190.5-mm-diameter column and particles with different surface finish and stiffness. Glass beads and plastic “BBs” coated using differe... |
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Oxygen Reduction Reaction on Pt(111), Pt(221), and Ni/Au1Pt3(221) Surfaces: Probing Scaling Relationships of Reaction Energetics and Interfacial Composition
10.1016/j.ces.2018.03.054 2018-04-01 In this work, we investigate the oxygen reduction reaction (ORR) on Pt(111), Pt(221), and Ni/Au1Pt3(221) surfaces using periodic density functional theory (DFT) calculations augmented with kinetic Monte Carlo (KMC) simulations. In the DFT calculations, both a... |
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Pore scale characteristics of gas flow in shale matrix determined by the regularized lattice Boltzmann method
10.1016/j.ces.2018.03.056 2018-03-31 The flow mechanism of natural gas in the shale matrix is closely related to the high efficient development of shale gas reservoirs. However, the flow characteristic of shale gas in nanometer pores is scale dependent, and is also affected by the formation cond... |
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A Monte-Carlo-Based Sensitivity Analysis of Multicomponent Diffusion in Porous Catalysts
10.1016/j.ces.2018.03.048 2018-03-31 Molar fluxes inside porous catalysts can be calculated by means of multicomponent diffusion models. The state-of-the-art dusty-gas model competes with several alternatives, best-known the mean-transport pore model and the binary friction model. All three appr... |
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Current density distributions in polymer electrolyte fuel cells: a tool for characterisation of gas distribution in the cell and its state of health
10.1016/j.ces.2018.03.055 2018-03-31 Distributions of current density (cd) in a 100 cm2 single polymer fuel cell have been measured, leading to a 12x12 data array. For a freshly matured MEA, the dimensionless distributions have been shown to be of moderate uniformity, whatever the cell current, ... |
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Assessment of separation efficiency modeling and visualization approaches pertaining to flow and mixing patterns on distillation trays
10.1016/j.ces.2018.03.052 2018-03-30 Distillation columns are essential to chemical process industries, and most of them are fitted with cross-flow trays due to their versatility. Since these columns are expensive in terms of cost and energy consumption, an accurate determination of their separa... |
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Pulsatile electroosmotic flow in a microchannel with asymmetric wall zeta potentials and its effect on mass transport enhancement and mixing
10.1016/j.ces.2018.03.051 2018-03-28 In this work, we analyze theoretically the mass transport of a neutral solute in a pulsatile electroosmotic flow (PEOF), circulating in a parallel flat plate microchannel whose walls are characterized by asymmetric zeta potentials. The microchannel is connect... |