Mutants of the methylotrophic actinomycete Amycolaropsis methanolica unable to grow on methanol as carbon source were isolated and characterized. Mutants specifically affected in methanol utilization were deficient in formaldehyde assimilation. Mutants blocked in the first step of primary alcohol oxidation (Cl-C4) had lost activity of the tetrazolium-dependent alcohol dehydrogenase, a three-com...

A hybrid for the visible-light-driven photocatalytic reduction of CO2 using methanol as a reducing agent was developed by combining two different types of photocatalysts: a Ru(II) dinuclear complex (RuBLRu') used for CO2 reduction is adsorbed onto Ag-loaded TaON (Ag/TaON) for methanol oxidation. Isotope experiments clearly showed that this hybrid photocatalyst mainly produced HCOOH (TN = 41 for...

Isothermal molecular beam experiments on the methanol oxidation over stepped Au(332) surface were conducted under well-defined ultra-high vacuum conditions.

(Received: May 18, 2012; Accepted in Revised Form: February 4, 2013) Abstract: Direct oxidation of benzene to phenol in liquid phase in the medium of methanol, acetone, acetic acid and acetonitrile as a solvent over chromium catalyst supported on highly ordered nanoporous silica (Cr-LUS-1) by H O were examined. The best results obtained from methanol solvent with 20% yield and selectivity of 90...

Three pteridines have been isolated from the methane- or methanol-oxidizing bacterium Methylococcus capsulatus. Two of these are known compounds, 2-amino-6-carboxy-4-hydroxypteridine and 2-amino-4-hydroxy-6-methylpteridine. The third is shown by degradative and synthetic experiments to be l-threo-neopterin 2':3'-phosphate. Labelling experiments show that both the pteridine moiety and phosphate ...

Kattel et al (Reports, 24 March 2017, p. 1296) report that a zinc on copper (Zn/Cu) surface undergoes oxidation to zinc oxide/copper (ZnO/Cu) during carbon dioxide (CO2) hydrogenation to methanol and conclude that the Cu-ZnO interface is the active site for methanol synthesis. Similar experiments conducted two decades ago by Fujitani and Nakamura et al demonstrated that Zn is attached to format...

Size-selected 3 nm gas-phase Au clusters dispersed by cluster beam deposition (CBD) on a conducting fluorine-doped tin oxide template show strong enhancement in mass activity for the methanol electro-oxidation (MEO) reaction compared to previously reported nanostructured gold electrodes. Density functional theory-based modeling corresponding guided experiments attributes this high MEO density o...

SINGLE-WALLED CARBON NANOTUBE BUCKYPAPERS AS ELECTROCATALYST SUPPORTS FOR METHANOL OXIDATION J.M. Sieben, A. Ansón-Casaos, M.T. Martínez, E. Morallón a Departamento de Química Física and Instituto Universitario de Materiales, Universidad de Alicante, Ap. 99 Alicante, Spain. b Instituto de Carboquímica, CSIC, Miguel Luesma 4, 50018 Zaragoza, Spain. Abstract This work studies the use of various s...

Core/shell nanostructured carbon materials with carbon nanofiber (CNF) as the core and a nitrogen (N)-doped graphitic layer as the shell were synthesized by pyrolysis of CNF/polyaniline (CNF/PANI) composites prepared by in situ polymerization of aniline on CNFs. High-resolution transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared and Raman analyses indicat...