the acetylation of various alcohols and phenols was performed successfully using acetic anhydride in the presence of citric acid coated magnetite nanoparticles as catalyst under solvent-free condition and at 45 °c. the catalyst showed high thermal stability and was recovered and reused at least 5 times without any considerable loss of activity. the present process is environmentally benign and ...

The abrasion is a significant issue, especially in machining of rigid steels. A functional and suitable approach for enhancing the heat transfer from machining area is using an intermediate fluid with higher heat transfer potential instead of common fluids. The objective of this experimental study is to discuss production, stability and thermal conductivity examination of water/graphene oxide n...

Current thermal simulation methods are not suitable for small-size fast-activation batteries, so this paper provides an improved method to calculate cell temperature changes using the COMSOL platform. A two-dimensional axisymmetric model of batteries has been established, considering actual heat release situation and mobile source batteries. Based on it, change electrolyte melting under high-te...

(RETRACTED PAPER) The Publisher and Editor retract this article based on the Publication Ethics In this project,Bio-based carbon nanotubes (CNTs) have received considerable research attention due to their comparative advantages of high level stability, simplistic use, low toxicity and overall environmental friendliness. New potentials for improvement in heat transfer applications are presented ...