Sentences with phrase «zeolite catalysts»
Dr. Peden has written or contributed to more than 160 peer - reviewed scientific publications on the kinetics and mechanisms of automobile exhaust catalysis; the development of zeolite catalysts for diesel engine emission control; hydrocarbon reforming over bimetallic catalysts; the structure of hydroprocessing catalysts; the development of novel, supported solid acid catalysts for petroleum refining; the growth and properties of oxide and semiconductor thin films; and model studies of adhesion at metal / metal - oxide interfaces.
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In most zeolite catalysts, nitric oxide is essentially a barbell combining a nitrogen atom and an oxygen atom.
«Discerning the Location and Nature of Coke Deposition from Surface to Bulk of Spent Zeolite Catalysts.»
«This allows for much higher efficiencies in conversion of methane to methanol than with zeolite catalysts previously reported.»
Instead, an energy - producing «hydrocarbon pool» mechanism allows the zeolite catalysts to directly produce longer hydrocarbon chains from the original alcohols.
After securing $ 67 million from leading venture capital firms and big companies, Rive Technology started to commercialize nanostructured zeolite catalysts for the production of diesel and gasoline.
«We have shown that alumina, which is always present in zeolites, can easily transform methanol into ethylene and other hydrocarbons, which can then be converted into carbenium ions in the pores of the zeolite catalyst,» explains Christophe Copéret, Professor of Surface and Interface Chemistry at ETH Zurich and one of the authors of the study.
The zeolite catalyst then converts these hydrogenated products into light olefins and aromatic hydrocarbons in a yield as much as three times higher than that produced with the pure pyrolysis oil.
The technology developed by ORNL's Chaitanya Narula, Brian Davison and Associate Laboratory Director Martin Keller uses an inexpensive zeolite catalyst to transform ethanol into hydrocarbon blend - stock.
A new bio-inspired zeolite catalyst might pave the way to small scale «gas - to - liquid» technologies converting natural gas to fuels and starting materials for the chemical industry.
A new bio-inspired zeolite catalyst, developed by an international team with researchers from Technische Universität München (TUM), Eindhoven University of Technology and University of Amsterdam, might pave the way to small scale «gas - to - liquid» technologies converting natural gas to fuels and starting materials for the chemical industry.
This computer model of a zeolite catalyst shows nitric oxide (ball - and - stick) interacting with a positively charged copper ion (copper ball) at an unexpected angle (red dotted lines).
Because removing oxygen is crucial for biofuel production, the team focused on how water interferes with two oxygen - removal paths driven by a zeolite catalyst.
A present - day hybrid QM / MM model of hydrocarbon chemistry in a zeolite catalyst framework (images adapted from Zimmerman P.M et al.).
Promoted to senior process engineer for large - scale projects, including a $ 355M coker process design and a $ 21M cumene plant revamp (inclusive of new hot oil system and transition to new zeolite catalyst technology).
Not exact matches
Zeolites are minerals widely used as catalysts and sorbents.
These zeolites are porous, granular aluminosilicate minerals facilitating the reaction as catalysts.
I knew that making zeolites more porous had long been a Holy Grail in the catalyst industry, so I soon started to work to commercialize my findings.
«We discovered that phosphorus - based catalysts supported by silica and zeolites exhibit high selectivity for manufacturing chemicals like butadiene,» says Prof. Wei Fan of the University of Massachusetts Amherst.
Scientists have experimented for decades with a class of catalysts known as zeolites that transform alcohols such as ethanol into higher - grade hydrocarbons.
«The developed zeolite is one of the few examples of a catalyst with well - defined active sites evenly distributed in the zeolite framework — a truly single - site heterogeneous catalyst,» says Professor Johannes Lercher.
Zeolites are porous minerals commonly used as catalysts.
While popular catalysts called zeolites could help turn paper manufacturing waste and other biomass into fuel, the catalyst crumbles after just two days in hot water.
«Understanding coke molecules in zeolites will provide broad benefits across the refinery and renewable energy industries, and zeolite is one of the most highly utilized catalysts,» said Karthikeyan Ramasamy, a chemical engineer at Pacific Northwest National Laboratory (PNNL).
Catalysts known as zeolites are vital to fuel production and other processes.
Results: They found zeolites's porous nature makes it a great chemical catalyst, but also traps tiny clusters of carbon - containing molecules that can ultimately disrupt the catalysis process.
He has published more than 350 research papers, notably in the area of modeling the structure and reactivity of transition metal oxide catalysts and zeolites, and he has given more than 440 invited lectures.
Mallouk calls the new work «very clever» because Yaghi and his colleagues have designed their hubs and linkers to mimic the construction of zeolites, a family of natural porous compounds widely used as catalysts and filters in industry.
To make aviation fuels from biomass, PNNL researchers are crafting catalytic zeolites with wider «lanes» to prevent molecular crashes and extend the life of catalysts designed to turn bio-oil to fuel.