Results 51 to 60 of about 2,045,683 (306)

Desidrogenação do etilbenzeno sobre compostos de ferro e alumínio

Química Nova, 2003
Chromium and potassium-doped iron oxides are widely used as industrial catalysts in the dehydrogenation of ethylbenzene to produce styrene. They have several advantages but deactivate with time, because of the loss of potassium.
Oliveira Alcinéia Conceição, Rangel Maria do Carmo   +1 more
doaj  

Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega‐Constellations

Geophysical Research Letters
Large constellations of small satellites will significantly increase the number of objects orbiting the Earth. Satellites burn up at the end of service life during reentry, generating aluminum oxides as the main byproduct.
José P. Ferreira, Ziyu Huang, Ken‐ichi Nomura, Joseph Wang   +3 more
doaj   +1 more source

Experimental Study on Laser Lap Welding of Aluminum–Steel with Pre-Fabricated Copper–Nickel Binary Coating

Crystals
In order to solve the problem of poor weld quality caused by brittle metal compounds in the welding of dissimilar metals between aluminum and steel, a pre-welding treatment method of prefabricated copper–nickel binary coating between aluminum and steel ...
Hua Zhang, Huiyan Gu, Dong Ma
doaj   +1 more source

Main Issues in Quality of Friction Stir Welding Joints of Aluminum Alloy and Steel Sheets

Metals, 2019
Joining of aluminum alloys through friction stir welding (FSW) is effectively employed in several industries (e.g., aeronautics and aerospace) since it guarantees proper weld strength as compared to other joining technologies.
Mian Wasif Safeen, Pasquale Russo Spena
doaj   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source

Removing Aluminum from Solution Using Chelating Compounds and Immobilized Tethered Chelators [PDF]

, 2011
Methods are described for removing aluminum from a solution using novel di- and tripodal compounds as ...
Zhan, Chang-Guo, Spilling, Christopher D., Yokel, Robert A., Harris, Wesley R.   +3 more
core  

On the crucial influence of some supporting electrolytes during electrocoagulation in the presence of aluminum electrodes [PDF]

, 2009
The influence of some supporting electrolytes on aluminum electrode oxidation and pH variation during electrocoagulation of an unskimmed milk sample and a cutting oil emulsion has been investigated.
Trompette, Jean-Luc, Vergnes, Hugues
core   +1 more source

The Role of Ultra‐Thin Passive Films and Organic Adsorbates on Aluminum Chips for a Friction‐Induced Solid‐State Recycling Process

Advanced Engineering Materials, EarlyView.
Despite benefits to storage stability and handleability of aluminum scrap, octadecyl phosphonic acid (ODPA) SAMs reduce the tensile strength of wires produced using friction‐induced recycling. Etching and methyl diphosphonic acid (MDPA) coatings, however, have little effect.
Timothy D. Goller, Steffen Gabsa, Werner Homberg, Guido Grundmeier   +3 more
wiley   +1 more source

Aluminum Phosphinate and Phosphates of Salen Ligands

, 2016
A new dealkylation reaction between organophosphate esters and Salen aluminum bromide compounds has been used to prepare three new aluminum salen compounds salen(tBu)AlOP(O)Ph2 (1) (salen = N,N‘-ethylenebis(3,5-di-tert-butylsalicylideneimine)), [(MeOH ...
Sean Parkin (1742122), Amitabha Mitra (2095540), David A. Atwood (2520079)   +2 more
core   +4 more sources

Rotary 3D Printing With Integrated Electroplating

Advanced Engineering Materials, EarlyView.
A rotary material extrusion platform integrates localized copper electroplating with printing and encapsulation to fabricate cylindrical polymer–metal structures containing fully embedded, low‐resistance conductive pathways that enable internal Joule heating and thermally activated shape‐memory responses.
Antonio Zagaria, Nicola Larovere, Moslem Mohammadi, Gianluca Percoco, Ali Zolfagharian, Gianni Stano   +5 more
wiley   +1 more source