@article { ISI:000227615900006, title = {Microwave assisted rapid synthesis of 4-amino-3,4-dihydroquinolin-2-ones from azetidin-2-ones}, journal = {Arkivoc}, number = {1}, year = {2005}, month = {JAN}, pages = {53-64}, publisher = {ARKAT USA INC}, type = {Article}, address = {C/O ALAN R KATRITZKY, UNIV FLORIDA, DEPT CHEMISTRY, PO BOX 117200, GAINESVILLE, FL 32611 USA}, abstract = {

An efficient one-pot synthesis of 4-amino-3,4-dihydroquinolin-2-ones from 3-(2-nitrophenyl)-1, 4-disubstituted azetidin-2-ones is described. Microwave assisted transfer hydrogenation of a nitro group followed by in situ beta-lactam ring opening by the newly formed amino group is the key step in this synthesis.

}, keywords = {4-amino-3, 4-dihydroquinolin-2-ones, azetidin-2-ones, imines, ketenes, Microwave, transfer hydrogenation}, doi = {10.3998/ark.5550190.0006.106}, author = {Shirode, N. M. and Kulkarni, K. C. and Gumaste, V. K. and Deshmukh, A. R. A. S.} } @article { ISI:000229786700020, title = {Microwave promoted solvent-free one-pot synthesis of N,N {\textquoteleft}-disubstituted urea derivatives}, journal = {Journal of Chemical Research-S}, number = {3}, year = {2005}, month = {MAR}, pages = {205-208}, publisher = {SCIENCE REVIEWS LTD}, type = {Article}, address = {PO BOX 314, ST ALBANS AL1 4ZG, HERTS, ENGLAND}, abstract = {

An efficient one-pot synthesis of N,N -disubstituted urea derivatives from substituted anilines, ethyl chloroformate and methyl anthranilate or methyl 3-amino-2-butenoate under microwave irradiation is reported.

}, keywords = {Anilines, methyl 3-amino-2-butenoate, methyl anthranilate, Microwave, urea derivatives}, issn = {0308-2342}, author = {Jadhav, Vinod H. and Deshpande, S. S. and Borate, Hanumant B. and Wakharkar, R. D.} } @article {24}, title = {Soft-sensor development for fed-batch bioreactors using support vector regression}, journal = {Biochemical Engineering Journal}, volume = {27}, number = {3}, year = {2006}, note = {Conference on Atomic Molecular and Optical Physics, Calcutta, INDIA, DEC 13-15, 2005}, month = {JAN}, pages = {225-239}, publisher = {Indian Assoc Cultivat Sci}, type = {Article}, address = {DR K S KRISHNAN MARG, NEW DELHI 110 012, INDIA}, abstract = {

In the present paper, a state-of-the-art machine learning based modeling formalism known as "support vector regression (SVR)", has been introduced for the soft-sensor applications in the fed-batch processes. The SVR method possesses a number of attractive properties such as a strong statistical basis, convergence to the unique global minimum and an improved generalization performance by the approximated function. Also, the structure and parameters of an SVR model can be interpreted in terms of the training data. The efficacy of the SVR formalism for the soft-sensor development task has been demonstrated by considering two simulated bio-processes namely, invertase and streptokinase. Additionally, the performance of the SVR based soft-sensors is rigorously compared with those developed using the multilayer perceptron and radial basis function neural networks. The results presented here clearly indicate that the SVR is an attractive alternative to artificial neural networks for the development of soft-sensors in bioprocesses.

}, keywords = {deprotection, Microwave, stannous chloride, tert-butyldimethylsilyl ethers}, isbn = {978-981-270-379-8}, issn = {0376-4699}, doi = {10.1016/j.bej.2005.08.002}, author = {Desai, Kiran M. and Badhe, Yogesh P. and Tambe, S. S. and Kulkarni, B. D.} } @article { ISI:000255728500004, title = {Efficient route towards the covalent functionalization of single walled carbon nanotubes}, journal = {Applied Surface Science}, volume = {254}, number = {16}, year = {2008}, month = {JUN}, pages = {4936-4943}, publisher = {ELSEVIER SCIENCE BV}, type = {Article}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

A simple and efficient method of chemical functionalization of both single and multiwalled carbon nanotubes has been discussed to give enhanced water solubility by rapidly and efficiently generating an appreciable amount of hydrophilic functional groups using microwave radiation. Surface functionalization containing more than 30 wt\% of oxygen has been achieved, resulting into solubility of 2-5 mg/mL. Further covalent functionalization of such soluble SWNTs provides a remarkable degree of aniline functionalization through amidation, where the formation of polyaniline has been avoided. Functionalization of SWNTs is confirmed by techniques like electron microscopy, Fourier transform infrared spectroscopy, thermogravimetry, Raman spectroscopy, cyclic voltammetry and impedance spectroscopy. Electrochemical analysis suggests an enhanced double layer capacitance (similar to 110 F/g) of nanotubes after microwave treatment. Aniline functionalization of SWNTs shows possible variations on the nanotube topography with concomitant formation of a dynamic polymer layer on the nanotube surface. (C) 2008 Elsevier B.V. All rights reserved.

}, keywords = {Carbon nanotubes, Functionalization, Microwave, solubility}, issn = {0169-4332}, doi = {10.1016/j.apsusc.2008.01.148}, author = {Kakade, Bhalchandra A. and Pillai, Vijayamohanan K.} } @article { ISI:000254820000016, title = {La0.67Ce0.03Sr0.3MnO3-coupled microwave assisted ultra-fast synthesis of nanocrystalline cobalt oxide and Bismuth oxide}, journal = {Materials Letters}, volume = {62}, number = {10-11}, year = {2008}, month = {APR}, pages = {1511-1513}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Bismuth hydroxide and Cobalt hydroxide gels were freshly prepared by adding aqueous sodium hydroxide to their corresponding nitrates under basic conditions. Then they were oven dried at 373 K and found to be amorphous in X-ray diffraction (XRD) study. They crystallized into their respective oxides by microwave irradiation (2.45 GHz) in merely 2 min using La0.67Ce0.03Sr0.3MnO3 (LCSMO) as couplant in a microwave domestic oven (similar to 100 W). This is the lowest temperature treatment and synthesis time so far reported in the literature for the formation of these systems. Formation of nanocrystallites of Bi2O3 (10 nm) and Co3O4 (15 nm) has been confirmed by XRD. Normally these hydroxides produce oxides only on heating at temperature \>673 K or digesting them at 373 K for 4 - 6 hours as reported by us earlier. Microwave assisted heating proves to be a novel technology whose applications can be carefully harnessed due to its unique effects compared to the conventional heating, such as rapid volumetric heating, shortened reaction time and energy saving. (C) 2007 Elsevier B.V. All rights reserved.

}, keywords = {Citrate gel method, Manganites, Microwave, Oxides}, issn = {0167-577X}, doi = {10.1016/j.matlet.2007.09.013}, author = {Rajagopal, Rajashree and Mona, J. and Joshi, Rakesh S. and Kale, Sangeeta N. and Pradhan, Sivararn and Gaikwad, A. B. and Ravi, V.} } @article { ISI:000251870400005, title = {Microwave assisted low temperature rapid synthesis of manganite system using La0.67Ce0.03Sr0.3MnO3 mini-cavity furnace}, journal = {Materials Letters}, volume = {62}, number = {2}, year = {2008}, month = {JAN}, pages = {191-193}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Amorphous La0.7Sr0.3MnO3 (LSMO) and La0.7Ca0.3MnO3 (LCMO) precursor powders synthesized by the citrate gel method at 673 K, have been found to crystallize by microwave irradiation in just 60 s using La0.67Ce0.03Sr0.3MnO3 (Ce-LSMO) as couplant. This is the lowest temperature treatment and synthesis time so far reported in literature for the fort-nation of manganite systems. Using ceramic route, the same amorphous samples crystallize on heat treatment only at temperatures greater than 1000 K. The microwave heating through this method is novel and has tremendous potential for accelerating the evolution of the product phase in very shorter durations, with just low temperature processing of the precursors, which cannot be realized in normal process. (c) 2007 Elsevier B.V. All rights reserved.

}, keywords = {Citrate gel method, LSMO, Manganites, Microwave, Oxides}, issn = {0167-577X}, doi = {10.1016/j.matlet.2007.05.002}, author = {Kale, Sangeeta N. and Rajagopal, Rajashree and Mona, J. and Londhe, D. P. and Joshi, Rakesh S. and Jagadale, Tushar C. and Satyanarayana, C. and Ravi, V.} } @article { ISI:000262377000014, title = {Near-complete phase transfer of single-wall carbon nanotubes by covalent functionalization}, journal = {Journal of Chemical Sciences}, volume = {120}, number = {6}, year = {2008}, note = {International Conference on Molecules and Materials - New Directions, Bangalore, INDIA, DEC 04, 2008}, month = {NOV}, pages = {599-606}, publisher = {INDIAN ACAD SCIENCES}, address = {C V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIA}, abstract = {

We describe here an efficient phase transfer of single wall carbon nanotubes (SWNTs) from aqueous to non-aqueous media using a unique amide functionalization route, where water soluble SWNTs (2.6 mg/mL) are effectively transferred to solvents like chloroform, toluene and CS(2). A maximum of 30 wt\% of oxygenated groups have been generated on the side walls by rapid microwave treatment, leading to a solubility of more than 2.6 mg/mL in water. Approximate surface amine coverage of 50\% has been accomplished after oxalyl chloride treatment as inferred from thermogravimetry and X-ray photoelectron spectroscopy by controlling several key parameters associated with the extent of functionalization including purity of the sample, temperature and time.

}, keywords = {Carbon nanotubes, microscopy, Microwave, Nanostructures, solubility of SWNTs}, issn = {0253-4134}, doi = {10.1007/s12039-008-0091-3}, author = {Kakade, Bhalchandra A. and Patil, Sanjay and Sathe, Bhaskar and Gokhale, Suresh and Pillai, Vijayamohanan} } @article { ISI:000284238000028, title = {Rapid generation of hierarchical nanoarchitectures of CdS via facile microwave assisted hydrothermal/semi-solvothermal route}, journal = {International Journal of Nanotechnology}, volume = {7}, number = {9-12, SI}, year = {2010}, month = {DEC}, pages = {1120-1130}, publisher = {INDERSCIENCE ENTERPRISES LTD}, address = {WORLD TRADE CENTER BLDG, 29 ROUTE DE PRE-BOIS, CASE POSTALE 896, CH-1215 GENEVA, SWITZERLAND}, abstract = {

1-D nanorod bundles as well as sea urchin and starfish like hierarchical morphological nanoarchitectures of CdS have been synthesised using a facile microwave assisted hydrothermal/semi-solvothermal technique. Observation of interesting regular/irregular pine-tree like secondary growth over these hierarchical nanoarchitectures is an important aspect of this work. Cadmium acetate and thiourea were used as precursor materials and were dissolved in solution containing mixture of diethylene triamine (DETA) and deionised water (DIW) in different volume ratios prior to subjecting the resultant solution to microwave radiation of 300 W at a reaction time of 10 min and temperature of 140 degrees C. XRD revealed formation of hexagonal CdS with strong (002) preferred orientation (c-axis orientation). Morphology dependent optical properties are studied using room temperature photoluminescence spectroscopy. We feel such secondary growth will be highly favourable in determining the non-linear properties of optoelectronic devices fabricated using such novel hierarchical nanoarchitectures.

}, keywords = {CdS, hierarchical nanoarchitectures, Microwave, Nanorods, secondary growth, solvothermal synthesis}, issn = {1475-7435}, author = {Shinde, Manish D. and Pawar, Amol U. and Sreeja, V. and Rane, Sunit and Potdar, Hari S. and Amalnerkar, Dinesh P.} } @article { ISI:000277738400017, title = {Simple and efficient synthesis of 2-Aryl-2,3-dihydroquinolin-4(1H)-ones using silica chloride as a new catalyst under solvent-free conditions}, journal = {Synthetic Communications}, volume = {40}, number = {9}, year = {2010}, month = {APR}, pages = {PII 921000023}, publisher = {TAYLOR \& FRANCIS INC}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

A mild, efficient, and high-yielding method for the synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones from their corresponding 2-amino chalcones using silica chloride (SiO2Cl) under solvent-free conditions is described. A series of 2-aryl-2,3-dihydroquinolin-4(1H)-ones containing both electron-donating and electron-withdrawing substituents were synthesized.

}, keywords = {2-Amino chalcones, 2-aryl-2, 3-dihydroquinolin-4(1H)-ones, Microwave, silica chloride}, issn = {0039-7911}, doi = {10.1080/00397910903097252}, author = {Muthukrishnan, Murugan and Mujahid, Mohammad and Punitharasu, V. and Dnyaneshwar, D. A.} } @article { ISI:000329299200005, title = {Comparison of sodium zirconium phosphate and calcium zirconium phosphate structures for the retention of fluoride}, journal = {Journal of Radioanalytical and Nuclear Chemistry}, volume = {299}, number = {1}, year = {2014}, month = {JAN}, pages = {19-24}, publisher = {SPRINGER}, type = {Article}, address = {VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS}, abstract = {

Fluoride anion interaction has been explored for the first time to investigate how the structure of sodium zirconium phosphate (NZP) and calcium zirconium phosphate (CZP) can be altered in its presence. Different compositions were made by adding NaF and CaF2 in CZP and NZP matrices respectively. Fluoride interaction differs with NZP and CZP structure as suggested by F-NMR data. The addition of fluoride to the NZP or CZP structure enables to stabilize the structure at a low temperature of 600-700 A degrees C under microwave conditions.

}, keywords = {F-NMR, Fluoride characterization, Microwave, NZP, PIGE}, issn = {0236-5731}, doi = {10.1007/s10967-013-2741-2}, author = {Dey, Ambarish and Das Gupta, Amit and Basu, Debrata and Ambashta, Ritu D. and Wattal, P. K. and Kumar, Sanjiv and Body, Monique and Rajamohanan, P. R.} } @article {43891, title = {Intensification of extraction of curcumin from Curcuma amada using ultrasound assisted approach: Effect of different operating parameters}, journal = {Ultrasonic Sonochemistry}, volume = {38}, year = {2017}, month = {SEP}, chapter = {437-445}, abstract = {

Curcumin, a dietary phytochemical, has been extracted from rhizomes of Curcuma amada using ultrasound assisted extraction (UAE) and the results compared with the conventional extraction approach to establish the process intensification benefits. The effect of operating parameters such as type of solvent, extraction time, extraction temperature, solid to solvent ratio, particle size and ultrasonic power on the extraction yield have been investigated in details for the approach UAE. The maximum extraction yield as 72\% was obtained in 1 h under optimized conditions of 35 degrees C temperature, solid to solvent ratio of 1:25, particle size of 0.09 mm, ultrasonic power of 250 W and ultrasound frequency of 22 kHz with ethanol as the solvent. The obtained yield was significantly higher as compared to the batch extraction where only about 62\% yield was achieved in 8 h of treatment. Peleg{\textquoteright}s model was used to describe the kinetics of UAE and the model showed a good agreement with the experimental results. Overall, ultrasound has been established to be a green process for extraction of curcumin with benefits of reduction in time as compared to batch extraction and the operating temperature as compared to Soxhlet extraction.

}, keywords = {Acrylamide, Cavitation, Curcumin Extraction, Design, Enhancement, Functionalized Silica, kinetics, Microwave, Nanoparticles, Natural-products, Optimization, Phenolic-compounds, Process Intensification, Solid-liquid Extraction, Ultrasound}, issn = {1350-4177}, doi = {10.1016/j.ultsonch.2017.03.040}, author = {Shirsath, S. R. and Sable, S. S. and Gaikwad, S. G. and Sonawane, S. H. and Saini, D. R. and Gogate, P. R.} } @article {45529, title = {Scalable microwave-assisted continuous flow synthesis of CuO nanoparticles and their thermal conductivity applications as nanofluids}, journal = {Advanced Powder Technology}, volume = {30}, year = {2019}, month = {JAN}, pages = {13-17}, type = {Article}, abstract = {

We have demonstrated the novel and scalable synthesis of CuO nanoparticles by an integration of microwave and flow synthesis. The shape and size of CuO nanoparticles were tuned by changing the concentration of copper precursor. The production rate of CuO nanoparticles was found to be 5 g/h with 70\% conversion of copper acetate into the CuO nanoparticles. The thermal conductivity of CuO nanofluid prepared in ethylene glycol showed linear enhancement with increase in the volume content of CuO nanoparticles produced in batch and flow reactors. (C) 2018 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

}, keywords = {Flow synthesis, Microwave, Nanofluids, Nanoparticles, scale-up, Thermal conductivity}, issn = {0921-8831}, doi = {10.1016/j.apt.2018.10.001}, author = {Nikam, Arun V. and Dadwal, Arun H.} } @article {49319, title = {Model predicted optimization of experimental set-up and process conditions for microwave-assisted synthesis of silver nanowires}, journal = {Chemical Engineering Journal}, volume = {498}, year = {2024}, month = {OCT}, pages = {155483}, type = {Article}, abstract = {

This work presents simulations led optimization of choice of a reactor for an experimental set-up for the continuous production of silver nanowires with certain constraints in terms of yield, reaction time, and dimensions of nanowires. The choice of reactors based on the simulations of reaction kinetics for nucleation and growth phases of driving the optimization of an experimental set-up and subsequent optimization of process conditions to maximize the yield of nanowires of desired dimensions. The optimized reactor configuration is dictated by the reaction kinetics and using a microwave in continuous mode becomes unavoidable. This makes the approach highly reproducible as well as scalable. The integration of conventional and microwave heating is simulated and subsequently optimized experimentally to attain a significant increase in nanowire yield under steady-state conditions with less than 15 min of residence time. The precise control over the rate in different reactor configurations governing nucleation, accelerated growth followed by slow growth to complete the conversion of precursor enables higher selectivity of nanowires with controllable dimensions resulting in 100 gm production per day using simple set-up. We systematically examined key reaction parameters, including the concentration of metal ions, residence time, and different reactor configurations. Our approach successfully yielded AgNWs with 40-60 nm diameter and 15 mu m length. The cost associated with this process for synthesizing AgNWs is less than 10\$ per gram. This study highlights the potential of continuous, high-throughput processes for controlling nanowire size and yield through advanced reactor engineering.

}, keywords = {Continuous synthesis, Microwave, Reactor design, Silver Nanowires}, issn = {1385-8947}, doi = {10.1016/j.cej.2024.155483}, author = {Sonawane, Jayesh R. and Kulkarni, Amol A.} }