Nav: Home

Scientists have deciphered the chemical reaction mechanism critical for cleaner combustion

May 21, 2018

The Journal of Physical Chemistry Letters, where original works in the field of chemistry and physics are published, has printed an article by an international team of scientists describing a discovery of the mechanism for the formation of the simplest polycyclic aromatic hydrocarbon (PAH), naphthalene. The mechanism depicted by the scientists will help in creating physically based combustion models required for the development of fundamentally new ecologically friendly combustion chambers for gas turbine engines.

In Samara University, the research continues within the mega-grant allocated by the government of the Russian Federation. The works are conducted under the leadership of Professor of Florida International University Alexander Mebel. A scientific publication "VUV Photoionization Study of the Formation of the Simplest Polycyclic Aromatic Hydrocarbon: Naphthalene (C10H8)" of a group of scientists from Samara University, University of Hawaii at Manoa, Lawrence Berkeley National Laboratory and Florida International University is an important link in the development of these studies.

"On the Earth polycyclic aromatic hydrocarbons are harmful substances, formed due to incomplete combustion of fuel. They are carcinogenic, lead to the formation of soot, which pollutes the environment and contributes to global warming, - says Alexander Mebel. - At the same time in the interstellar space, PAHs are precursors of biochemical molecules and an important factor in the chemical evolution in the Universe. For these reasons, a detailed understanding of PAH formation and growth mechanisms is important, both for the development of environmentally friendly combustion technologies, and for answering the eternal question of the origin of life. "

In the article published in the Journal of Physical Chemistry Letters, a chemical reaction is described for the formation of a polycyclic aromatic hydrocarbon (naphthalene) from the phenyl and vinylacetylene at elevated temperatures corresponding to the conditions of flames or circumstellar envelopes.

The scientists from the Samara University - Doctor of Physical and Mathematical Sciences, Professor Marsel Zagidullin and Chief Researcher of the Research and Education Centre for Physics of Open Nonequilibrium Systems (REC PhNOS-73), Professor Valeriy Azyazov calculated this chemical reaction using theoretical modeling. Their colleagues - chemists from Florida International University, University of Hawaii at Manoa and Lawrence Berkeley National Laboratory, confirmed the results of the theoretical calculations in the laboratory experiment in a vacuum chamber with a microreactor.

"This work allowed us to understand the details of the synthesis of the simplest PAH prototyps and to develop a physically based and quantitatively accurate model of this process," - concluded Alexander Mebel.

For reference:


In Samara University within the mega-grant allocated by the government of the Russian Federation, an experimental setup is being created to study combustion reactions. Only three such installations currently exist in the world - in the USA (in Berkeley and in Hawaii) and in China (Hefei). The task of the laboratory staff of Samara University under the leadership of Alexander Mebel is to develop physically based combustion models by obtaining new data on chemical combustion processes and flames characteristics.

The project is aimed at solving the important problem - prevention of environmental pollution. International standards for harmful emissions are constantly tightened and new ecologically clean combustion technologies are necessary to ensure the competitiveness of Russian producers.

It is necessary to minimize the formation of soot, carcinogenic substances at the design stage of internal combustion engines, diesel, gas turbines, aircraft and rocket engines. And in order to minimize them, it is necessary to understand how they are formed. To this end, within the work on the mega-grant, appropriate fundamental mechanisms are investigated.
-end-


Samara Univercity

Related Chemistry Articles:

Coordination chemistry and Alzheimer's disease
It has become evident recently that the interactions between copper and amyloid-β neurotoxically impact the brain of patients with Alzheimer's disease.
Can ionic liquids transform chemistry?
Table salt is a commonplace ingredient in the kitchen, but a different kind of salt is at the forefront of chemistry innovation.
Principles for a green chemistry future
A team led by researchers from the Yale School of Forestry & Environmental Studies recently authored a paper featured in Science that outlines how green chemistry is essential for a sustainable future.
Sugar changes the chemistry of your brain
The idea of food addiction is a very controversial topic among scientists.
Reflecting on the year in chemistry
A lot can happen in a year, especially when it comes to science.
Better chemistry through tiny antennae
A research team at The University of Tokyo has developed a new method for actively controlling the breaking of chemical bonds by shining infrared lasers on tiny antennae.
Chemistry in motion
For the first time, researchers have managed to view previously inaccessible details of certain chemical processes.
Researchers enrich silver chemistry
Researchers from Russia and Saudi Arabia have proposed an efficient method for obtaining fundamental data necessary for understanding chemical and physical processes involving substances in the gaseous state.
The chemistry behind kibble (video)
Have you ever thought about how strange it is that dogs eat these dry, weird-smelling bits of food for their entire lives and never get sick of them?
Top 10 chemistry start-ups
Starting a new chemistry-based company is one part discovery, one part risk.
More Chemistry News and Chemistry Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Listen Again: Meditations on Loneliness
Original broadcast date: April 24, 2020. We're a social species now living in isolation. But loneliness was a problem well before this era of social distancing. This hour, TED speakers explore how we can live and make peace with loneliness. Guests on the show include author and illustrator Jonny Sun, psychologist Susan Pinker, architect Grace Kim, and writer Suleika Jaouad.
Now Playing: Science for the People

#565 The Great Wide Indoors
We're all spending a bit more time indoors this summer than we probably figured. But did you ever stop to think about why the places we live and work as designed the way they are? And how they could be designed better? We're talking with Emily Anthes about her new book "The Great Indoors: The Surprising Science of how Buildings Shape our Behavior, Health and Happiness".
Now Playing: Radiolab

The Third. A TED Talk.
Jad gives a TED talk about his life as a journalist and how Radiolab has evolved over the years. Here's how TED described it:How do you end a story? Host of Radiolab Jad Abumrad tells how his search for an answer led him home to the mountains of Tennessee, where he met an unexpected teacher: Dolly Parton.Jad Nicholas Abumrad is a Lebanese-American radio host, composer and producer. He is the founder of the syndicated public radio program Radiolab, which is broadcast on over 600 radio stations nationwide and is downloaded more than 120 million times a year as a podcast. He also created More Perfect, a podcast that tells the stories behind the Supreme Court's most famous decisions. And most recently, Dolly Parton's America, a nine-episode podcast exploring the life and times of the iconic country music star. Abumrad has received three Peabody Awards and was named a MacArthur Fellow in 2011.