The current pandemic caused by COVID-19 has intensively triggered the development of high-performance air filters. Polypropylene (PP) is widely used as raw material meltblown nonwoven materials and core layer in filters, such masks. In this study, an electret PP with antibacterial activity was developed, nano boehmite (AlOOH) nano-ZnO were employed agents, respectively. AlOOH (0.5–2.0 wt%) ZnO ...

Abstract: composition of MgO and nano boehmite. The reactant and potassium chloride, as the reaction media, were fired at800-1000 °C at different dwell times (0.5-5 h) in the ambient atmosphere. After washing and filtration, the spinel nanopowder was characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) techniques. It was demonstrated tha...

The application aims to determine the thermal and hydraulic performance of externally finned, counter-flow, Shell, Tube Heat Exchangers (STHE). refers cooling machine oil flowing in annular region, including non-spherical cylindrical nanoparticles Boehmite Alumina. inlet temperature is equal 80 °C. Sea water a coolant with an 20°C. main parameter optimization process number finned tubes used fo...

It is of great importance to develop a spherical γ-alumina support with high hydrothermal stability be used in platinum reforming catalyst processes. The porous pseudo-boehmite powder surface area was first synthesized via simple separate nucleation and aging steps method, then as precursor produce γ-Al2O3 an oil–ammonia column method. as-synthesized has substantially greater specific 336.0 m2·...

This article provides details of a study that investigates hydrogen (H2) separation, purification and transport behaviour ceramic ?-alumina membrane compares it with ?-alumina modified Boehmite sol.