Results 171 to 180 of about 33,148 (256)

Rationales for the Choice of Metals for Super‐Reduced Biological Metal Centers: Cobalt in Cobalamin Versus Nickel in F430

open access: yesChemistry – A European Journal, EarlyView.
DFT calculations on porphyrin, corrin, and corphin complexes of cobalt, rhodium, iron, manganese, or nickel, and QM/MM calculations on enzyme models, explore the factors controlling the availably of super‐reduced metal(I) states. True metal(I) states are seen in corrin only for cobalt, in corphin only for nickel, and not at all in porphyrin.
Radu‐Ioan Onija   +3 more
wiley   +1 more source

Sustainable Germanium Recovery From Germanium Dioxide via Halogen‐Free Chemical Vapor Transport

open access: yesChemistry – A European Journal, EarlyView.
Recovery of the critical element Ge from GeO2 and SiO2/GeO2 mixtures was investigated based on an endothermic chemical vapor transport via GeO, formed with natural gas or a hydrogen(10%)‑argon(90%) mixture and water vapor. (This picture was partly created with AI, engine: Adobe Firefly).
Julian Burkhart   +6 more
wiley   +1 more source

Spectroscopic Investigation of the Role of Water in Copper Zeolite Methane Oxidation. [PDF]

open access: yesJ Am Chem Soc
Heyer AJ   +8 more
europepmc   +1 more source

Controlled Formation and Unusual Reactivity of Cyanohexatriyne (HC7N), a Synthetically Challenging Interstellar Cyanopolyyne

open access: yesChemistry – A European Journal, EarlyView.
First controlled formation of cyanohexatriyne (HC7N) is achieved using a cobalt–alkyne masking strategy that overcomes the intrinsic instability of nitrile‐substituted polyynes. The approach enables spectroscopic validation of HC7N and reveals its pronounced electrophilicity through a selective conjugate addition with diethylamine.
Léa Lefrançois   +4 more
wiley   +1 more source

Regulators of aerobic and anaerobic methane oxidation in two pristine temperate peatland types. [PDF]

open access: yesFEMS Microbiol Ecol
Nweze JA   +6 more
europepmc   +1 more source

Potential Analysis of On‐Site Oxygen and Ozone Production for Wastewater Treatment Plants

open access: yesChemie Ingenieur Technik, EarlyView.
The potential of a power‐to‐gas process focusing on the oxygen stream to cover an upcoming demand of ozone at German wastewater treatment plants is analyzed. Economic and ecological parameters are compared to the conventional production of hydrogen and oxygen. Powered by on‐site produced wind energy, the process is deemed beneficial.
Vincenta Franßen   +3 more
wiley   +1 more source

Anchoring PdOx clusters on defective alumina for improved catalytic methane oxidation. [PDF]

open access: yesNat Commun
Yu X   +7 more
europepmc   +1 more source

Exploring Tradeoffs in Syngas Production With Solid‐Oxide Electrolysis via Multi‐Objective Optimization

open access: yesChemie Ingenieur Technik, EarlyView.
This work applies multi‐objective optimization to investigate trade‐offs between different objectives in syngas production with solid‐oxide cell co‐electrolysis. Two system designs are investigated. By systematically exploring tradeoffs between different objectives, insights, and comparisons of the operation of these designs are achieved.
Gbenga Jerome   +6 more
wiley   +1 more source

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