01919nas a2200229   4500008004100000022001400041245008400055210006900139260010600208300001400314490000700328520107600335653001801411653001501429653001901444653001701463653003201480100002101512700002001533700001901553856011701572       2007                        eng d  a0009-250900aHydrodynamics and liquid phase residence time distribution in mesh microreactor0 aHydrodynamics and liquid phase residence time distribution in me  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcDEC  a7484-74930 v623 a<p>This paper is focused on the experimental analysis of residence time distribution and phase hold-up in a mesh microreactor. A microreactor, where a finely weaved mesh is sandwiched between two flat plates with specific inlets for gas and liquid, is proposed. The microvolumes formed upon sandwiching the mesh are totally connected and thus it yields a view of several interconnected microvolumes. This system is easy to build and does not need precision micromachining. A high-speed photographic analysis yielded the phase distribution for different mesh types over a wide range of operating gas and liquid flow rates. The RTD was studied by measuring the liquid phase conductivity at the outlet of the reactor. Channeling prevailed for mesh with smaller open area. The ADEM was used for fitting the tracer curves with tailing ends. The RTD and the image analysis for all the mesh types showed hysteresis when the gas flow rate was maintained constant and the liquid flow rate was gradually increased and then decreased. (c) 2007 Elsevier Ltd. All rights reserved.</p>10ahydrodynamics10ahysteresis10aimage analysis10amicroreactor10aresidence time distribution1 aKulkarni, A., A.1 aGorasia, A., K.1 aRanade, V., V.  uhttp://library.ncl.res.in/content/hydrodynamics-and-liquid-phase-residence-time-distribution-mesh-microreactor-001802nas a2200229   4500008004100000022001400041245008600055210006900141260007300210300001200283490000800295520098300303653002101286653001901307653001701326653002401343653001601367100002301383700002101406700003001427856011501457       2014                        eng d  a0927-775700aMicrofluidic platform for continuous flow synthesis of triangular gold nanoplates0 aMicrofluidic platform for continuous flow synthesis of triangula  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB  a149-1550 v4433 a<p>A microfluidic platform for the continuous flow synthesis of triangular gold nanoplates with and without surfactants is developed. The temperature profile in the microchannel, residence time and composition have been studied to understand effect of these parameters on the yield of the triangular nanoplates and were optimized for obtaining maximum yield of triangles. The flow synthesis approach has been demonstrated where the Br- ions can be supplied to the reaction mixture either from the surfactant viz. Cetyl trimethylammonium bromide (CTAB) or even from HBr. Apart from the Br- ions, the temperature gradient at the inlet of the continuous flow reactor is one of the key parameter that affects the yield of the triangular nanoplates. Finally we establish that with a right combination of the controlling parameters abetter yield of the Au nanotriangles by flow methods can be achieved even in the absence of surfactant. (C) 2013 Elsevier B.V. All rights reserved.</p>10aAu nanotriangles10aFlow synthesis10amicroreactor10aNucleation kinetics10aSurfactants1 aKumar, D., V. Ravi1 aKulkarni, A., A.1 aPrasad, Bhagavatula L. V.  uhttp://library.ncl.res.in/content/microfluidic-platform-continuous-flow-synthesis-triangular-gold-nanoplates-0