Room-Temperature Hydrogen Absorption of Titanium with Surface Modification by Organic Solvents

2019 ◽  
Vol 123 (32) ◽  
pp. 19269-19274 ◽  
Author(s):  
Keita Shinzato ◽  
So Hamamoto ◽  
Hiroki Miyaoka ◽  
Takayuki Ichikawa
Keyword(s):  
Surface Modification ◽  
Organic Solvents ◽  
Hydrogen Absorption ◽  
Room Temperature

Surface modification effects of graphite for selective hydrogen absorption by titanium at room temperature

2020 ◽  
Vol 56 (53) ◽  
pp. 7237-7240
Author(s):  
Keita Shinzato ◽  
Yuki Nakagawa ◽  
So Hamamoto ◽  
Yuya Hayashi ◽  
Hiroki Miyaoka ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Raman Spectroscopy ◽  
Surface Modification ◽  
Organic Solvents ◽  
Hydrogen Absorption ◽  
Room Temperature ◽  
Absorption Properties ◽  
Transmission Electron

Surface modification effects of graphite and organic solvents on Ti were investigated by thermogravimetry (TG), Raman spectroscopy, and transmission electron microscopy (TEM) observations to improve its hydrogen absorption properties.

Imidazole Promoted Efficient Anomerization of β-D-Glucose Pentaacetate in Organic Solutions and Solid State

2019 ◽  
Author(s):  
Meifeng Wang ◽  
Liyin Zhang ◽  
Yiqun Li ◽  
Liuqun Gu
Keyword(s):  
Solid State ◽  
Organic Solvents ◽  
Room Temperature ◽  
Materials Design ◽  
The Future ◽  
Organic Solutions ◽  
Glucose Pentaacetate

<p></p>Anomerization of glycosides were rarely performed under basic condition due to lack of efficiency. Here an imidazole promoted anomerization of β-D-glucose pentaacetate was developed; and reaction could proceed in both organic solvents and solid state at room temperature. Although mechanism is not yet clear, this unprecedent mild anomerization in solid state may open a new promising way for stereoseletive anomerization of broad glucosides and materials design in the future..

Effects of Drying Temperature on Surface Morphology and Electric Behavior of IGZO Thin Film Prepared by Solution Process

2015 ◽  
Vol 1731 ◽  
Author(s):  
Nobuko Fukuda ◽  
Shintaro Ogura ◽  
Koji Abe ◽  
Hirobumi Ushijima
Keyword(s):  
Thin Film ◽  
Organic Solvents ◽  
Room Temperature ◽  
Thin Film Transistor ◽  
Solution Process ◽  
Precursor Solution ◽  
Drying Process ◽  
Minor Variation ◽  
Drying Temperature ◽  
Metal Nitrates

ABSTRACTWe have achieved a drastic improvement of the performance as thin film transistor (TFT) for solution-processed IGZO thin film by controlling drying temperature of solvents containing the precursor solution. The IGZO-precursor solution was prepared by mixing of metal nitrates and two kinds of organic solvents, 2-methoxyethanol (2ME) and 2,2,2-trifluoroethanol (TFE). 2ME was used for dissolving metal nitrates. TFE was added as a solvent for reducing surface tension as small as possible, leading to improvement of the wettability of the precursor solution on the surface of the substrate. In order to discuss the relationship between morphology and drying process, the spin-coated IGZO-precursor films were dried at room temperature and 140 °C on a hotplate, respectively. Annealing of the both films was carried out at 300 °C in an electric oven for 60 min after each drying process. Drying at room temperature provides a discontinuous film, resulting in a large variation of the TFT performance. On the other hand, drying at 140 °C provides a continuous film, resulting in the higher TFT performance and a minor variation. The difference in surface morphologies would be derived from the evaporation rate of the organic solvents. The rapid evaporation at 140 °C brings about rapid pinning of the spin-coated precursor layer on the substrate. Preparation process via the drying at 140 °C gave ∼ 1 cm2 V-1 s-1 of the saturated mobility, quite small hysteresis, and 107∼ 108 of the on-off ratio.

A co-precipitated Mg–Ti nano-composite with high capacity and rapid hydrogen absorption kinetics at room temperature

RSC Advances ◽  
2014 ◽  
Vol 4 (81) ◽  
pp. 42764-42771 ◽  
Author(s):  
Yana Liu ◽  
Jinxin Zou ◽  
Xiaoqin Zeng ◽  
Wenjiang Ding
Keyword(s):  
Hydrogen Absorption ◽  
Room Temperature ◽  
High Capacity ◽  
Absorption Kinetics ◽  
Nano Composite

A Mg–Ti nano-composite was co-precipitated through an adapted Rieke method, which exhibits high capacity and superior absorption kinetics at room temperature (∼6.2 wt% within 2 h).

Room Temperature Hydrogen Absorption of Mg/MgH2 Catalyzed by BaTiO3

2021 ◽  
Author(s):  
Joshua Adedeji Bolarin ◽  
Zhao Zhang ◽  
Hujun Cao ◽  
Zhi Li ◽  
Teng He ◽  
...  
Keyword(s):  
Hydrogen Absorption ◽  
Room Temperature

scholarly journals Dinuclear thiazolylidene copper complex as highly active catalyst for azid–alkyne cycloadditions

2016 ◽  
Vol 12 ◽  
pp. 1566-1572 ◽  
Author(s):  
Anne L Schöffler ◽  
Ata Makarem ◽  
Frank Rominger ◽  
Bernd F Straub
Keyword(s):  
Acetic Acid ◽  
Organic Solvents ◽  
Copper Complex ◽  
Room Temperature ◽  
Active Catalyst ◽  
Catalyst Design ◽  
Ancillary Ligand ◽  
Click Reactions ◽  
Highly Active ◽  
Cost Efficient

A dinuclear N-heterocyclic carbene (NHC) copper complex efficiently catalyzes azide–alkyne cycloaddition (CuAAC) “click” reactions. The ancillary ligand comprises two 4,5-dimethyl-1,3-thiazol-2-ylidene units and an ethylene linker. The three-step preparation of the complex from commercially available starting compounds is more straightforward and cost-efficient than that of the previously described 1,2,4-triazol-5-ylidene derivatives. Kinetic experiments revealed its high catalytic CuAAC activity in organic solvents at room temperature. The activity increases upon addition of acetic acid, particularly for more acidic alkyne substrates. The modular catalyst design renders possible the exchange of N-heterocyclic carbene, linker, sacrificial ligand, and counter ion.

Deep Oxidative Desulfurization of Dibenzothiophene by Functional Tungsten-Containing Mesoporoussilica from Polyoxometalate-Based Salts

2014 ◽  
Vol 636 ◽  
pp. 93-96
Author(s):  
Ming Zhang ◽  
Wen Shuai Zhu ◽  
Meng Li ◽  
Yan An Li ◽  
Suhang Xun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Organic Solvents ◽  
Room Temperature ◽  
Oxidative Desulfurization ◽  
Catalytic Performance ◽  
Sulfur Compounds ◽  
High Dispersion ◽  
One Pot ◽  
Tungsten Species

Tungsten-containing functional mesoporousW-SiO2 have been successfully synthesized by an one-pot and facile room-temperature procedure. These materials presented a high dispersion of tungsten species and excellent catalytic activity on the removal of sulfur compounds without any organic solvents as extractants. The catalytic performance on sulfur compounds was investigated in detail. After recycling for 8 times, the removal of the oxidation desulfurization system could still reach 92.0%.

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