A new lemari asam bio-inspired zeolite driver, developed by an international team with experts from Technische Universität München (TUM), Eindhoven University of Technology and also University of Amsterdam, might pave the best way to small scale 'gas-to-liquid' technologies converting natural gas to fuels and also starting materials for that chemical industry. Investigating the mechanism with the selective oxidation regarding methane to methanol they will identified a trinuclear copper-oxo-cluster for the reason that active center inside the zeolite micropores.
In the era of eating up mineral oil resources natural gas is becoming increasingly relevant, even the gas is difficult to move and not easily integrated inside the existing industrial facilities. One of the solutions because of this is to apply 'gas-to-liquid' technologies. These convert methane, the key component of natural gas, to so-called synthesis gas where subsequently methanol and also hydrocarbons are generated. These liquids are then shipped for you to chemical plants or fuel companies across the world.
This approach, on the other hand, today is merely feasible at very large scales. Currently there is no 'gas-to-liquid' chemistry for the economical running of methane via smaller sources with remote locations. It has spawned many research efforts about the chemistry of methane alteration.
Of all the particular conceptually promising scaled-down scale processes for that direct conversion regarding methane, the partial oxidation for you to methanol seems by far the most viable since it makes for lower operating temps, making it a lot more inherently safe and more energy efficient.
Bio-inspired driver
A research team combining the know-how of Moniek Tromp (UvA/HIMS), Evgeny Pidko and also Emiel Hensen (Eindhoven University of Technology), Maricruz Sanchez-Sanchez (Technische Universität München) and also Johannes Lercher (Technische Universität München and also Pacific Northwest National Laboratory) happens to be focusing on some sort of bio-inspired method empowering such partial methane oxidation.
At the focus of the team can be a modified zeolite, a highly structured porous material, developed at Lercher's study group in Munich. This copper-exchanged zeolite together with mordenite structure mimicks the reactivity associated with an enzyme known for you to efficiently and selectively oxidize methane for you to methanol.
In their real publication in Mother nature Communications the researchers offer an unprecedented and in depth molecular insight in how the zeolite mimics the particular active site with the enzyme methane monooxygenase (MMO).
http://robust-chemical.com/lemari-asam-fume-hood-based-on-wooden-structure/
Very selective
The researchers show that the micropores of the zeolite give you a perfect confined environment for that highly selective stabilization associated with an intermediate copper-containing trimer molecule. This result follows from the combination of kinetic scientific tests in Munich, state-of-the-art spectroscopic analysis in Amsterdam and theoretical modeling in Eindhoven. Trinuclear copper-oxo groups were identified that exhibit a higher reactivity towards account activation of carbon-hydrogen provides in methane and its subsequent transformation for you to methanol.
"The developed zeolite is amongst the few examples of a catalyst with well-defined active sites evenly distributed inside the zeolite framework -- a single-site heterogeneous driver, " says Mentor Johannes Lercher. "This makes for much higher efficiencies in conversion of methane for you to methanol than together with zeolite catalysts earlier reported. "
Additionally, the research exhibited the unequivocal linking with the structure of the particular active sites with their catalytic activity. This renders the particular zeolite a "more than promising" material in achieving amounts of catalytic activity and selectivity just like enzymatic systems.
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