Results 121 to 130 of about 65,546 (303)

Ruthenium catalysts for hydrogenation of biomass-based levulinic acid for efficient γ-valerolactone synthesis

iScience
Summary: Biomass is the only abundant and concentrated carbon source for renewable fuels and chemicals. Among biomass platform molecules, γ-valerolactone (GVL) has a wide range of applications.
Kejia Zhang, Jieni Wang, Yijun Tian, Shuqin Zhang, Season S. Chen, Leichang Cao, Jinglai Zhang, James H. Clark, Shicheng Zhang   +8 more
doaj   +1 more source

Heterogeneous Catalyst Design Principles for the Conversion of Lignin into High Value Commodity Fuels and Chemicals [PDF]

, 2020
Chorkendorff I., L′udmila H., Wyman C. E., Wyman C. E.   +3 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Analysis of elementary surface reactions in aromatic hydrogenation on Pt using Single-Event MicroKinetics [PDF]

, 2009
C
Marin, Guy, Thybaut, Joris
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

CO2 hydrogenation toward toluene methylation for selective para-xylene synthesis

Nature Communications
The selective production of high-value para-xylene (PX) through CO2 hydrogenation-coupled toluene methylation represents a promising strategy for sustainable carbon utilization.
Junqi Tian, Yongjie Xi, Jianian Cheng, Jieyun Zhang, Hao Wang, Fujun Ren, Jun Yuan, Changxin He, Hongfang Yang, Chengyuan Liu, Zelong Li, Can Li   +11 more
doaj   +1 more source

Breaking Trade‐Off between Selectivity and Activity of Nickel‐Based Hydrogenation Catalysts by Tuning Both Steric Effect and d‐Band Center

Advanced Science, 2019
For selective hydrogenation of chemicals the high selectivity is always at the expense of activity and improving both selectivity and activity is challenging.
Ruijie Gao, Lun Pan, Huiwen Wang, Yunduo Yao, Xiangwen Zhang, Li Wang, Ji‐Jun Zou   +6 more
doaj   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Mechanism of Semi-Hydrogenation of Trace Acetylene in Ethylene by [MB12Hx]2-

Taiyuan Ligong Daxue xuebao
[Purposes] The main problem of semi-hydrogenation of trace acetylene in ethylene is excessive hydrogenation. High concentration of ethylene is the main cause of excessive hydrogenation, so it is important to design a catalyst with acetylene enrichment ...
CHEN Kangjie, WANG Wannan, SHI Xiufeng, REN Ruipeng, LYU Yongkang   +4 more
doaj   +1 more source