搜索结果: 1-15 共查到“hydrogen”相关记录72条 . 查询时间(0.09 秒)
Low cost,scalable water-splitting fuels the future hydrogen economy
Low cost water-splitting fuels future hydrogen economy
2017/7/21
The "clean-energy economy" always seems a few steps away but never quite here. Fossil fuels still power transportation, heating and cooling, and manufacturing, but a team of scientists from Penn State...
Four-Stroke Engine Cycle Produces Hydrogen from Methane and Captures CO2
Four-Stroke Engine Cycle Produces Hydrogen Methane CO2
2017/3/14
When is an internal combustion engine not an internal combustion engine? When it’s been transformed into a modular reforming reactor that could make hydrogen available to power fuel cells wherever the...
The 2nd International Conference on Hydrogen Atom Transfer (iCHAT 2017) will be held from July 2-6 2017 in Monteporzio Catone, a small village in the “Castelli romani” area about 20 km south of Rome. ...
New Findings Boost Promise of Molybdenum Sulfide for Hydrogen Catalysis
Boost Promise Molybdenum Sulfide Hydrogen Catalysis
2016/12/13
MoS2 presents a promising low-cost catalyst for the hydrogen evolution reaction (HER), but the understanding about its active sites has remained to be limited. Here we present an unambiguous study for...
Putative Hydrogen Bond to Tyrosine M208 in Photosynthetic Reaction Centers from Rhodobacter capsulatus Significantly Slows Primary Charge Separation
Coagulation Nano TiO2 Nano Al2O3 Breakage Fractal dimension
2016/5/25
Slow, ~50 ps, P* → P(+)HA(-) electron transfer is observed in Rhodobacter capsulatus reaction centers (RCs) bearing the native Tyr residue at M208 and the single amino acid change of isoleucine at M20...
Experimental quantification of electrostatics in X-H⋅⋅⋅π hydrogen bonds
Experimental quantification electrostatics X-H⋅ ⋅ ⋅ π hydrogen bonds
2016/5/25
Hydrogen bonds are ubiquitous in chemistry and biology. The physical forces that govern hydrogen-bonding interactions have been heavily debated, with much of the discussion focused on the relative con...
Direct Measurements of Electric Fields in Weak OH••π Hydrogen Bonds
Direct Measurements Electric Fields Weak OH• • π Hydrogen Bonds
2016/5/25
Hydrogen bonds and aromatic interactions are of widespread importance in chemistry, biology, and materials science. Electrostatics play a fundamental role in these interactions, but the magnitude of t...
Electrostatic Fields Near the Active Site of Human Aldose Reductase:2.New Inhibitors and Complications Caused by Hydrogen Bonds
Humans Nitriles Aldehyde Reductase Spectrophotometry, Infrared Spectroscopy, Fourier Transform Infrared Binding Sites Catalytic Domain Protein Binding Kinetics Hydrogen Bonding
2016/5/25
Vibrational Stark effect spectroscopy was used to measure electrostatic fields in the hydrophobic region of the active site of human aldose reductase (hALR2). A new nitrile-containing inhibitor was de...
Kinetics of hydrogen peroxide generated from live and dead ram spermatozoa and the effects of catalase and oxidase substrates addition
reactive oxygen species ram antioxidant
2016/2/23
The generation of hydrogen peroxide (H2O2) by ram spermatozoa (spz) was measured using a flurometric assay with 10-acetyl-3,7-dihydroxyphenoxazine agent as a probe for H2O2 detection. The kinetics of ...
Validation of hydrogen cyanide fumigation in flourmills to control the confused flour beetle
mills food safety pest control insecticides fumigant
2015/3/30
In the milling industry, the Tribolium confusum is hard to exterminate pest. We measured the concentration time product (Ct-P) achieved during the hydrogen cyanide (HCN) fumigation and examined whethe...
Conjugation in hydrogen-bonded systems
molecular clusters electron density distribution hydrogen bonds conjugation cooperativity
2012/4/19
Analysis of the electron density distribution in clusters composed of hydrogen fluoride, water, and ammonia molecules, especially within the hydrogen-bond domains, reveals the existence of both \sigma...
Photochemical Hydrogen Abstraction and Electron Transfer Reactions of Tetrachlorobenzoquinone with Pyrimidine
Tetrachlorobenzoquinone Thymine Uracil Triplet state Hydrogen abstrac-tion Electron transfer Laser flash photolysis
2012/4/5
Pentachlorophenol, a widespread environmental pollutant that is possibly carcinogenic to humans, is metabolically oxidized to tetrachloroquinone (TCBQ) which can result in DNA damage. We have investig...
Heterogeneous Uptake of Hydrogen Peroxide on Mineral Oxides
Kinetics Hydrogen peroxide Heterogeneous uptake Atmospheric lifetime
2012/4/5
The interaction of mineral oxides (α-Al2O3, MgO, Fe2O3, and SiO2) with hydrogen peroxide was investigated using the Knudsen cell reactor. The initial reactive uptake coefficients for the commercially ...
Hydrogen Production From Crude Bio-oil and Biomass Char by Electrochemical Catalytic Reforming
Hydrogen Bio-oil Biomass char Ni-Al2O3 catalyst CuZn-Al2O3 catalyst Electro chemical catalytic reforming
2012/4/5
We reports an efficient approach for production of hydrogen from crude bio-oil and biomass char in the dual fixed-bed system by using the electrochemical catalytic reforming method. The maximal absolu...
An efficient one-pot synthesis of dihydropyrimidinones catalyzed by zirconium hydrogen phosphate under solvent-free conditions
Biginelli reaction solvent-free zirconium hydrogen phosphate
2010/10/18
A simple, efficient, and practical procedure for the Biginelli reaction using zirconium hydrogen phosphate [Zr(H2PO4)2] as a novel solid acid catalyst is described under solvent-free conditions in hig...