Results 61 to 70 of about 82,500 (309)

Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: influence of temperature on deactivation [PDF]

, 1997
Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported rac-Me2Si[Ind]2ZrCl2/methylaluminoxane (MAO) at temperatures between 40°C and 80°C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities.
Meier, G.B., Roos, P., Samson, J.J.C., Samson, Job Jan C., Weickert, G., Westerterp, K.R.   +5 more
core   +2 more sources

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Optimal oxygen feeding policy to maximize the production of Maleic anhydride in unsteady state fixed bed catalytic reactors

Journal of King Saud University: Engineering Sciences, 2017
The effect of different oxygen feeding scenarios in a fixed bed reactor for the production of Maleic anhydride (MA) is studied. Two reactor configurations were examined.
E. Ali, M. Al-haj Ali, K. Alhumaizi, M. Elharbawi   +3 more
doaj   +1 more source

Microwave‐Assisted Aqueous Synthesis of Gelatin‐Norbornene for Hydrogel Crosslinking and Bioprinting

Advanced Materials Technologies, EarlyView.
A microwave‐assisted reaction is utilized to synthesize gelatin‐norbornene (GelNB), achieving a high degree of norbornene functionalization while reducing the macromer's upper critical solution temperature. The resulting GelNB macromer has high solubility at room temperature, facilitating light‐based 3‐dimensional (3D) printing of thiol‐norbornene ...
Jonathan B. Bryan, Chien‐Chi Lin
wiley   +1 more source

Comparative Study of Fixed and Fluidized Bed Reactor for Zirconium Tetrachloride Production [PDF]

مجله علوم و فنون هسته‌ای, 2018
In this research, zirconium tetrachloride production is studied as one of the stages of zirconium production. Basically, there are two main methods for producing zirconium tetrachloride from zirconium dioxide: The first and older method used in Iran is ...
M. R Ghasemi, S. M Ghoreishi, M Ghannadi Maragheh, M. H Jazini   +3 more
doaj  

FOTODEGRADASI METHYL ORANGE DALAM REAKTOR FIXED BED BATU APUNG-SEMEN

Jurnal Sains dan Teknologi, 2016
Abstrak Tujuan penelitian ini adalah untuk mengetahui karakteristik batu apung dan semen yang digunakan sebagai bed dalam reaktor fixed bed dan efektivitasnya dalam mendegradasi methyl orange akibat pengaruh pH larutan dan sinar dalam sistem reaksi. Bed
N.W. Yuningrat, N. Retug, I.M. Gunamantha   +2 more
doaj   +1 more source

A Review on Microreactor Design for Effective Fischer–Tropsch Process Intensification

Advanced Materials Technologies, EarlyView.
Design strategies for effective Fischer–Tropsch process intensification are summarized based on experimental and simulation experiences. Recommendations for catalyst loading of packed‐bed and wash‐coated microchannel, microtube, micromonolith, and microstructured reactors are discussed.
Yangjun Wei, Lukas Thum, Avela Kunene, Daniel Amkreutz, Rutger Schlatmann, Sonya Calnan   +5 more
wiley   +1 more source

Lab Scale Fixed-Bed Reactor for Operando X-Ray Absorption Spectroscopy for Structure Activity Studies of Supported Metal Oxide Catalysts [PDF]

, 2018
Lab scale fixed-bed reactor is applied for operando transmission X-ray absorption spectroscopy (XAS) for structure-activity studies of supported metal oxide catalysts under real reaction conditions. This setup includes many properties of an optimal fixed-
Bocher, L., Ferri, D., Hug, P., Korsak, O., Logvinovich, D., Matam, Santhosh, Weidenkaff, A.   +6 more
core  

Accelerating Discovery to Deployment: Argonne's Materials Engineering Research Facility (MERF) and Its Role in Scaling Materials Technologies for Water and Resource Solutions

Advanced Materials Technologies, EarlyView.
In this Perspective, we highlight the processing science and scale‐up capabilities of the Materials Engineering Research Facility (MERF) at the U.S. Department of Energy's Argonne National Laboratory, with an emphasis on practical solutions for sustainable water and critical resource recovery. We demonstrate how national laboratories bridge fundamental
Yuepeng Zhang, Bratin Sengupta, Xiaoao Shi, Haihui Pu, Jeffrey W. Elam, Gregory K. Krumdick, Jessica Durham Macholz, Allison Bennett Irion, Junhong Chen, Seth B. Darling   +9 more
wiley   +1 more source

Ethane Chlorination Toward Vinyl Chloride Synthesis: Mechanistic and Catalytic Perspectives

Angewandte Chemie, EarlyView.
Ethane chlorination is emerging as a promising low‐carbon route to vinyl chloride monomer, yet it remains academically underexplored due to the complexity of radical chemistry. As the first focused Minireview on this topic, it offers forward‐looking mechanistic analysis, unveils catalyst evolution pathways, and defines research priorities to accelerate
Xia Wu, Guodong Huo, Haifeng Qi, Qinggang Liu, Nicholas F. Dummer, Graham J. Hutchings, Yanqiang Huang   +6 more
wiley   +2 more sources