Results 211 to 220 of about 138,974 (318)

Cryogenic propellant management in space: open challenges and perspectives. [PDF]

NPJ Microgravity
Simonini A, Dreyer M, Urbano A, Sanfedino F, Himeno T, Behruzi P, Avila M, Pinho J, Peveroni L, Gouriet JB.   +9 more
europepmc   +1 more source

Ultrafast Synthesis of a Non‐Noble FeCoNiCrZn Multi‐Element Alloy Electrocatalyst for Alkaline Oxygen Evolution Reaction

Carbon Energy, EarlyView.
A nanoporous carbon‐coated FeCoNiCrZn multi‐element alloy on carbon cloth (FeCoNiCrZn‐C@CC) is fabricated by ultrafast pulsed laser irradiation. It has excellent OER performance, achieving an overpotential of only 233 mV at 10 mA cm−2 and remarkable stability for 94 h at 250 mA cm−2, which is due to multiple factors.
Yu Liang, Yu Lu, Jianghong Zhang, Zichen Xu, Mingzhen Xiu, Jiuyang Xia, Junrong Yue, Yifan Li, Yi Cui, Yingpeng Xie, Yizhong Huang, Guangwen Xu, Zhong‐Shuai Wu   +12 more
wiley   +1 more source

A needle-free bubble injector enabling depth-controlled isotropic and anisotropic perforation using electrically induced bubbles and heat generated by electric discharge. [PDF]

Biomed Microdevices
Aokusa Y, Ota N, Miura S, Nakahigashi M, Minami Y, Yamanishi Y.   +5 more
europepmc   +1 more source

Denaturation of Water in Alkaline Melts

Chemistry – A European Journal, EarlyView.
Vapor pressure measurements and ab initio molecular‐dynamics simulations reveal that in ultra‐alkaline media with base concentrations up to 70 mol L−1, the activity of water is dramatically reduced by strong bonding interactions. These disrupt traditional hydrogen bonding patterns, alter vapor‐liquid equilibria, and significantly change molecular ...
Xudong Zhang, Oldamur Hollóczki, Johannes Ingenmey, Barbara Kirchner, Michael Ruck   +4 more
wiley   +1 more source

Climate Impact of Direct and Indirect N₂O Emissions from the Ammonia Marine Fuel Value Chain. [PDF]

Environ Sci Technol
Esquivel-Elizondo S, Walkowiak B, Sartzetakis SS, Buma B.   +3 more
europepmc   +1 more source

Cross‐Carboxylation of Methanol and Other Alcohols With CO2 Into Asymmetric Alkyl Methyl Carbonates Over a CeO2 Catalyst

Chemistry – A European Journal, EarlyView.
One‐pot synthesis of asymmetric organic carbonates from CO2, methanol, and other alcohols was demonstrated in the presence of CeO2 catalyst and 2‐cyanopyridine dehydrant. This reaction proceeded through two reaction pathways—direct route via cross‐carboxylation and indirect route via production of DMC and subsequent transesterification.
Yuan Li, Zechen Li, Mizuho Yabushita, Yoshinao Nakagawa, Keiichi Tomishige   +4 more
wiley   +1 more source

Modeling energy requirements for oxygen production on the Moon. [PDF]

Proc Natl Acad Sci U S A
Leger D, Ghaffari-Tabrizi F, Shaw M, Rasera J, Dickson D, Valentin B, Morlock A, Thoresen F, Cowley A.   +8 more
europepmc   +1 more source

SO2 Transfer Enabled by an Easy‐to‐Handle Ionic Liquid

Chemistry – A European Journal, EarlyView.
Best of both worlds: The ionic liquid [NEt3Me][Cl(SO2)n] unites the atom economy and low cost of sulfur dioxide with the safety and applicability of common surrogates, streamlining SO2 transfer to access to 3‐sulfolenes, sulfonamides, and SuFEx reagents.
Johanna S. Sturm, Letizia Lanfredi, Severin Erbertseder, Marius Balizs, Patrick Voßnacker, Simon Steinhauer, Merlin Kleoff, Anja Wiesner, Niklas Limberg, Patrick Pröhm, Franz‐Lucas Haut, Sebastian Riedel   +11 more
wiley   +1 more source

Cryogenic Insulation-Towards Environmentally Friendly Polyurethane Foams. [PDF]

Polymers (Basel)
Vevere L, Yakushin V, Sture-Skela B, Andersons J, Cabulis U.   +4 more
europepmc   +1 more source

High‐Temperature Heat Pump Test Bench with n‐Butane (R‐600) Generating Steam

Chemie Ingenieur Technik, EarlyView.
This work involves building a test bench for a high‐temperature heat pump (HTHP) and analyzing the measurements. The focus is on steam generation using an HTHP to decarbonize process steam demand. The findings indicate that stable steam generation is possible, providing a higher heat transfer coefficient in the heat pump's condenser.
Sebastian Benkert, Lukas Joos, Ursula Wittstadt, Torsten Will, Andreas Burger, Lena Schnabel, Stefan Henninger, Thorsten Klahm   +7 more
wiley   +1 more source