Sentences with phrase «oxidation reaction»

Tags for this Online Resume: heterogeneous catalysis, organic chemist, mesoporous material, metal - organic framework, oxidation reaction, photocatalysis

But, that's just measuring the ability of these fruits to quench an oxidation reaction in a test tube.

«some amino acids (cysteine, tryptophan and methionine, 50 microM each) also inhibited the TPO iodide oxidation reaction completely»

Graphs like this, which I've shared over the years, that compare the antioxidant power of foods, were all based on very primitive methods — basically, just measuring how much a food slows down an oxidation reaction between two chemicals in a machine.

The scientists correlated the various peaks observed in the NMR spectra with the catalysts» reactivity for an oxidation reaction that removes a hydrogen atom from methanol.

The oxidation reaction process results in breaking apart hydrogen into two electrons and two protons.

Then they employed this oxidation reaction as the anode reaction of the PEC that produces hydrogen at the cathode.

Unfortunately, the rate of the water oxidation reaction is very slow, which limits the rate of the overall reaction and the efficiency of the solar - to - hydrogen conversion.

For this work, he has used a number of ultra-high vacuum surface science techniques to, for example, identify and explain several very unusual mechanistic features of the heterogeneous chemistry occurring in a catalytic converter including: a) the dramatically different CO oxidation reaction mechanism on ruthenium metal relative to other late transition metals; b) the structure sensitive selectivity of the NO reduction reaction on rhodium metal; c) deactivation of rhodium metal at high oxygen partial pressures; and d) the significantly different CO oxidation reaction mechanism over oxidized rhodium metal.

When a battery is discharged, an electrochemical oxidation reaction proceeds at the negative electrode, and an electrochemical reduction reaction occurs at the positive electrode.

When one attempts to recharge a battery by reversing the direction of electric current flow, the opposite takes place: a reduction reaction proceeds at the negative electrode, and an oxidation reaction takes place at the positive electrode.

Other VOCs go through similar oxidation reaction.

For example, metal oxidation might be the sole oxidation reaction during battery discharge, whereas the formation of hydrogen (a highly inflammable and therefore dangerous gas) might be a significant reduction reaction during battery recharging.

For example, when the battery is recharged, the overall electrochemical reduction reaction at the negative electrode is identical to the electrochemical oxidation reaction that proceeded at the negative electrode when the battery was discharged, only written in reverse.

As a catalyst, the ferrous iron should remain chemically unchanged at the end of the oxidation reaction.

«If we can put these H2O2 formation catalysts very close to something which performs the oxidation reaction, we can avoid the entire problem or concentrating and transporting hydrogen peroxide.»

«The result could be a runaway oxidation reaction» and the release of radioactive fission gases» and some of the radioactive fuel material.

In the extra virgin olive oil used for frying fish, this thermal oxidation reaction did not occur as it is more degradation - resistant than sunflower oil.

«Someone will also need to determine exactly how Nocera's catalyst is driving the water oxidation reaction,» says Eisenberg, noting that achieving the first reaction alone is «an excellent development on a very difficult and keenly important problem.»

They can create great diversity initiated by one simple carbon - hydrogen oxidation reaction.»

The presence of this laser - induced reaction pathway allows elucidation of the microscopic mechanism and the dynamics of the carbon monoxide oxidation reaction.

Twenty common amino acids exist in nature, but are altered by carbon - hydrogen oxidation reactions to change their shape or add functional groups such as alcohols or carboxylic acids.

A breakthrough study that Apfeld co - authored while an instructor at Harvard Medical School provided one piece of the puzzle, thanks to a new fluorescent sensor technology that precisely measures oxidation reactions in the cells of live organisms.

Known as a sous vide cooker, the heated bath holds food for hours within a fraction of a degree of the preset temperature, eliminating oxidation reactions that can discolor food and harm its flavor or texture.

The reduction and oxidation reactions that occur at the electrodes of batteries produce a flow of electrons that generate and store energy.

«Faster, cheaper wastewater treatment through improved oxidation reactions: Researchers have developed a simple way to improve Advanced Oxidation Processes.»

«By stabilizing the energy of oxygen atoms and electrons, the catalyst lowers the energy cost of selective oxidation reactions just like a bank facilitates the sale of a car from one person to another.

«Basically, we are dealing here with simple oxidation reactions that are amplified particularly during intervals of high temperatures such as during the Cretaceous period.»

Also, your body innately has antioxidant enzyme systems in place to help counteract the normal oxidation reactions that occur naturally.

Is a key component of various proteins, as well as enzymes that catalyze cellular oxidation reactions

Except at extreme temperatures, the only carbons within a fatty acid that are vulnerable to spontaneous, harmful oxidation reactions are those that are situated between two double bonds.

As we know the oxidation reactions may cause damage to our body cells, therefore, reducing them can help us fight against the most deadly disease - Cancer.

As one of the most powerful antioxidants ever discovered - with a greater range of effectiveness than vitamin C, vitamin E, or beta - carotene - melatonin helps prevent harmful oxidation reactions from occurring.

I would not have expected this to be the case as the decomposition process involves oxidation reactions that are exponential functions of temperature while the alarmists have been been arguing for years that the plant growth process is limited by, and dependent on, factors other than just temperature.

Not exact matches

Oxidation is a chemical reaction that releases free radicals, which proceed to cause cell damage.

In schizophrenia, excessive oxidation — which involves the same type of chemical reaction that causes metal to corrode into rust — is widely thought to cause inflammation and cellular damage.

It's a mode that you can use when cleaning certain metals that can protect them from oxidation or other chemical reactions during the cleaning cycle.

The team triggered a reversible electrochemical reduction and oxidation (redox) reaction at the GO / zirconia interface by applying a dc voltage.

The finding that cerium oxide may grab hydrogen as well as oxygen is promising for efforts to engineer it to catalyze both reactions that cause electron gain («reduction» of a reactant) and electron loss («oxidation»).

The first is the more challenging of the two reactions, which is why research puts so much effort into the development of efficient and sustainable water oxidation catalysts.

But test scores and other evidence show that many U.S. middle and high school students struggle to understand even basic chemical reactions such as oxidation or photosynthesis.

«A radical approach to methane oxidation into methanol: Researchers convert methane to valuable chemicals using clean, low - temperature radical reaction.»

Knowing the precise location of hydrogen peroxide within cells could help scientists gain a better understanding of oxidation - reduction reactions taking place there.

Cerium oxide nanocrystals have the ability to absorb and release oxygen ions — a chemical reaction known as reduction oxidation, or redox, for short.

That allowed them to quantify the amount of oxidation product that was formed during the reaction.

Researchers from the University of Houston and Trinity University have for the first time provided direct evidence of a water - mediated reaction mechanism for the catalytic oxidation of carbon monoxide.

The research team developed, for the first time in the world, a new technology that combines porous stainless steel, which is thermally and mechanically strong and highly stable to oxidation / reduction reactions, with thin - film electrolyte and electrodes of minimal heat capacity.

Redox reactions include all chemical processes in which atoms have their oxidation number (oxidation state) changed.

Several students in Flaherty's lab are currently exploring different ways of «coupling this chemistry directly with reactions that use hydrogen peroxide for green oxidations within very short length scales,» that is, micrometers away, Flaherty said.

Many metabolic pathways depend on reduction and oxidation (redox) reactions.