The liquid-phase photocatalytic oxidation of l-octanol in oxygenated acetoniaile on highly dispersed titanium oxide catalysts anchored onto transparent Vycor glass was compared with that obtained on the standard TiO2 powder. The isolated titanium oxide species anchored onto transparent Vycor glass are responsible for its high photocatalytic activity both in the present liquid-phase oxidation of...

Monodispersed organic phase droplets with an average diameter from 20 to 200 µm were produced at the rate of up 20,000 per second in a glass microfluidic chip composed 7 parallel 3D flow focusing junctions 100 µm-deep channels. The continuous was 2 wt% polyvinyl alcohol solution, while dispersed dichloromethane, n-dodecane, and polydimethylsiloxane 10 cSt fluid corresponding dispersed-to-contin...

Abstract Phase segregation, the process by which the components of a binary mixture spontaneously separate, is a key process in the evolution and design of many chemical, mechanical, and biological systems. In this work, we present a data-driven approach for the learning, modeling, and prediction of phase segregation. A direct mapping between an initially dispersed, immiscible binary fluid and ...

In hydrocracking and other foaming reactors, the foam rises to the top because it has a higher gas fraction than the bubbly mixture from which it comes. The high gas hold-up in foams is undesirable in chemical reactors because it strongly decreases the liquid residence time and in hydrocracking reactors also promotes the formation of coke. To study foams we built a cold slit bubble reactor whic...

The gasification progress which was coupled between heat transfer and fluid-flow on rib-tube of Open Rack Vaporizer (ORV) was studied in this paper. Based on theoretical analysis and experiment, the k ε − model and wall-function were chose to simulate the flow field of rib-tube, and the multiphase flow was described by the mixture model, in which the dispersed phase was defined by different vel...

Interfacial waves in core-annular pipe flow are studied through two-phase numerical simulations. Here the water annulus is turbulent, whereas oil core stays laminar. The low-Reynolds number Launder & Sharma k−ε model applied. By extracting moving wave shape from results and imposing this as a solid boundary single-phase simulation for gives (for pressure drop holdup ratio) that close agreement ...