A highly efficient and scalable microwave assisted synthesis of zirconium-based metal-organic framework UiO-66 was developed. In order to identify the best conditions for optimizing the process, a wide range of parameters was investigated. The efficiency of the process was evaluated with the aid of four quantitative indicators. The properties of the materials prepared by microwave irradiation w...

─ A new functionality for the hybrid electromagnetic – thermodynamic simulations of microwave heating scenarios in the time domain is presented. The new functionality consists in the modelling of the heated load movement throughout the simulated process. Various types of the movement trajectories have been allowed for, including load rotation and load translation along user-defined piecewise-li...

D. Nowak, M. Stachowicz, K. Granat, M. Pigiel. Wroclaw University of Technology, Wroclaw, Poland The paper presents a semi-industrial reactor designed for microwave utilization of waste moulds and cores made of moulding sands prepared in furane resin technology. It was found that a possibility exists of eff ective incinerating this way prepared residues of cores separated from moulding sands or...

In the study of thin film preparation using a low cost microwave induced plasma method, we have carried out calorimetric power analysis in a microwave oven with different loads. The calorimetric calibration was done with various heating loads like coconut oil, engine oil, fruit juice and water. The power consumption of water was higher when compared to other loads. The results show the comparis...

Utilizing ~1 W of microwave power, we achieved heating of PCR buffer with unprecedented temperature ramp rates that allowed for rapid thermocycling. Polymeric microdevices, chosen for their low cost and ease of fabrication, were constructed from polycarbonate (PC), poly(methyl-methacrylate) (PMMA), and polyester-toner (PeT) using fast, simple microfabrication via computer-aided milling for PC a...

The microwave heating of a ceramic composite is modelled and analysed. The composite consists of many small ceramic particles embedded in a ceramic cement. The composite is assumed to be well insulated, and each particle is assumed to be in imperfect thermal contact with the surrounding cement. Based on these two assumptions an asymptotic theory exploiting the small Biot number and small non-di...

Changes in magnetic resonance (MR) signals during interstitial microwave heating are reported, and correlated with simultaneously acquired temperature readings from three fiber-optic probes implanted in a polyacrylamide gel phantom. The heating by a MR-compatible microwave antenna did not interfere with simultaneous MR image data acquisition. MR phase-difference images were obtained using a fas...

In this study, reactions of quaternization under microwave heating of pyridine, α-picoline, pyridine-4-aldoxime, pyridine-2aldoxime, nicotinamide, isonicotinamide and pyridoxal oxime with different electrophiles: 2-bromo-4'-nitroacetophenone, 2-amino-4chloro-methylthiazole hydrochloride, methyl iodide, 1,3-diiodopropane and 1,3-dibromopropane are reported. The synthesis yield by microwave diele...

The purpose of the study was to investigate microwave selective heating phenomena and their impact on heterogeneous chemical reactions. We also present a tool which will help microwave chemists to answer to such questions as "My reaction yields 90% after 7 days at reflux; is it possible to obtain the same yield after a few minutes under microwaves?" and to have an approximation of their reactio...