Results 31 to 40 of about 1,309,063 (308)

Reaction Mechanism and Process Control of Hydrogen Reduction of Ammonium Perrhenate

Metals, 2020
The preparation of rhenium powder by a hydrogen reduction of ammonium perrhenate is the only industrial production method. However, due to the uneven particle size distribution and large particle size of rhenium powder, it is difficult to prepare high ...
Junjie Tang, Yuan Sun, Chunwei Zhang, Long Wang, Yizhou Zhou, Dawei Fang, Yan Liu   +6 more
doaj   +1 more source

Reduction Kinetics of Compact Hematite with Hydrogen from 600 to 1050 °C

Metals, 2023
Reduction of iron ores with hydrogen is a solution to replace fossil fuels. For this reason, it is important to discuss previous discrepancies. Some previous studies suggest a rate minimum with respect to temperature.
Junguo He, Kejiang Li, Jianliang Zhang, Alberto N. Conejo   +3 more
doaj   +1 more source

First-principles modeling of the polycyclic aromatic hydrocarbons reduction

, 2011
Density functional theory modelling of the reduction of realistic nanographene molecules (C42H18, C48H18 and C60H24) by molecular hydrogen evidences for the presence of limits in the hydrogenation process.
Ao Z. M., Ao Z. M., Ataca C., Ataca C., Boukhvalov D. W, Boukhvalov D. W., Boukhvalov D. W., Cai J., Casiraghi C., Chernozatonskii L. A., Chernozatonskii L. A., Chernozatonskii L. A., Cordero N. A., D. W. Boukhvalov, Elias D. C., K. Müllen, Kosimov D. P., Laursen B. W., Leenaerts O., Leenaerts O., Leenaerts O., Leenaerts O., Lin Y., Luo Z., Monkhorst H. J., Neubeck S., Perdew J. P., Perdew J. P., Ribeiro R. M., Riger R., Rouhanipour A., Räder H. J., Shahab Naghavi S., Sheka E. F., Sheka E. F., Singh A. K., Sofo J. O., Soler J. M., Watson M. D., Wehling T. O., Wehling T. O., Widenkvist E., Wu J., X. Feng, Xiang H., Xu Y. N., Yang S. B., Yang X. Y., Zanella I.   +48 more
core   +1 more source

Hydrogen reduction of cobalt ferrite [PDF]

Metallurgical Transactions B, 1981
The kinetics of reduction of cobalt ferrite by hydrogen as a function of reduction temperature and pressure have been measured by thermogravimetric analysis. A minimum in the rate as a function of temperature has been observed and its cause attributed to the formation of a cobalt-wiistite subscale at higher reduction temperatures. A mathematical model,
J. R. Porter, L. C. De Jonghe, De Jonghe
openaire   +1 more source

Impact of Iron Ore Pre-Reduction Degree on the Hydrogen Plasma Smelting Reduction Process

Metals, 2023
To counteract the rising greenhouse gas emissions, mainly CO2, the European steel industry needs to restructure the current process route for steel production.
Daniel Ernst, Ubaid Manzoor, Isnaldi Rodrigues Souza Filho, Michael Andreas Zarl, Johannes Schenk   +4 more
doaj   +1 more source

Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production. [PDF]

, 2020
The protonic ceramic electrochemical cell (PCEC) is an emerging and attractive technology that converts energy between power and hydrogen using solid oxide proton conductors at intermediate temperatures.
Bian, Wenjuan, Ding, Dong, Ding, Hanping, Ding, Yong, Hu, Boxun, Jiang, Chao, Orme, Christopher J, Singh, Prabhakar, Wang, Lucun, Wu, Wei, Zhang, Yunya   +10 more
core   +1 more source

Water Splitting Reaction at Polar Lithium Niobate Surfaces [PDF]

, 2019
Water splitting is a highly promising, environmentally friendly approach for hydrogen production. It is often discussed in the context of carbon dioxide free combustion and storage of electrical energy after conversion to chemical energy.
Dues, Christof, Sanna, Simone, Schmidt, Wolf Gero   +2 more
core   +2 more sources

Hydrogenations without Hydrogen: Titania Photocatalyzed Reductions of Maleimides and Aldehydes

Molecules, 2014
A mild procedure for the reduction of electron-deficient alkenes and carbonyl compounds is described. UVA irradiations of substituted maleimides with dispersions of titania (Aeroxide P25) in methanol/acetonitrile (1:9) solvent under dry anoxic conditions led to hydrogenation and production of the corresponding succinimides.
David Manley, Luca Buzzetti, Andrew MacKessack-Leitch, John Walton   +3 more
openaire   +5 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Crystalline Ni3S2 Nanorods Tuned by Low-Crystalline NiCoS x with Built-In Electric Field for Efficient Overall Water Splitting

Nano-Micro Letters
Highlights Low-crystalline NiCoSx-armored Ni3S2 nanorod heterostructure inhibits sulfide loss. Built-in electric field effect induced by work function accelerates electron transfer.
Neng Chen, Jun He, Hongqiang Li, Dedong Jia, Haoran Qian, Huan Pang, Jieshan Qiu, Yongfeng Li, Xiaojun He   +8 more
doaj   +1 more source