@article {48731,
	title = {Effect of microwave heating on the residence time distribution in a tubular reactor},
	journal = {Industrial \& Engineering Chemistry Research},
	volume = {62},
	year = {2023},
	month = {AUG },
	pages = {19381-19389},
	type = {Article},
	abstract = {<p>
	Microwave(MW) heating has been revolutionary in various applications,including chemical synthesis. A nonconventional heating approach reducesthe reaction time significantly. For a continuous flow tubular reactorunder microwaves, the temperature would change from the inlet to theoutlet depending on the dielectric constant of the reaction mass,which would further change the physical properties, viz., the densityand viscosity of the material. Such changes in the physical propertieswould lead to nonideal flows and would affect the conversion as wellas selectivity for reactions. In order to understand the extent ofsuch a nonideality, here for the first time we have done systematicstudies of the residence time distribution in a helical coil reactor.The axial dispersion model has been modified to take into accountthe temperature-dependent physical properties of the fluid. The empiricalcorrelation for the dispersion number is obtained over the range of450 \&amp; LE; P (W) \&amp; LE; 1200 and 60 \&amp; LE; T (\&amp; DEG;C) \&amp; LE; 150. This study will help model thereaction kinetics as well as reactor design under microwave specificallyfor heat sensitive reactions where variations in the overall residencetime would affect the yield and selectivity of the end product.</p>
},
	issn = {0888-5885},
	doi = {10.1021/acs.iecr.3c01243},
	author = {Sonawane, Jayesh R. and Kulkarni, Amol A.}
}
@article {48706,
	title = {Understanding the nucleation and growth kinetics of the microwave-assisted synthesis of silver nanowires},
	journal = {Industrial \& Engineering Chemistry Research},
	volume = {62},
	year = {2023},
	month = {SEP },
	pages = {14199-14211},
	type = {Article},
	abstract = {<p>
	Here, we present a detailed study of understanding the nucleation and growth kinetics of silver nanowire synthesis under microwave irradiation. The approach includes studying the effect of various parameters (viz., microwave power, reaction temperature, reaction time, substrate concentration, etc.) on the rate of nucleation and growth, as well as on the yield and morphology of silver nanowires. It is found that microwave power is the most important factor in leading to almost complete conversion of the substrate along with high aspect ratio nanowires in a short reaction time. Based on the observations, here, we have proposed a three-step growth kinetics mechanism for the synthesis of silver nanowires under the influence of microwaves. The approach comprises the autocatalytic growth of stable multiple twin particles after the nucleation process and their unidirectional growth to form nanowires. The FW autocatalytic model and the JMAK Avrami model were used to validate the proposed mechanism of AgNW formation based on our experimental results. The model predictions match very well with the conversion and yield of AgNWs. At the optimized conditions, wires with a 42 nm diameter and 94\% yield were achieved within 4 min.</p>
},
	issn = {0888-5885},
	doi = {10.1021/acs.iecr.3c00322},
	author = {Sonawane, Jayesh R. and Patil, Suneha and Kulkarni, Amol A.}
}
