Compared with the circumstances of O2, the mixture of O2/H2O made negligible differences in the dark, but gave rise to a new peak at 3350 cm−1 for the stretching vibration of hydroxyl groups under light irradiation (Fig. 3a, b). In this case, water reacted with O2 over Au1/BP ...
Interactions in methanol-water solutions and in the pure components are examined using experimental measurements of (1) self-diffusion of the pure components and isotopic forms of them, (2) diffusion of both components in the mixture including some measurements for trace amounts of methanol in wate...
Spectral variation effects due to presaturation of water were removed by zeroing intensity values between 4.5 and 4.9 p.p.m. To identify metabolites that differentiate MAM from sham animals, partial least squares discriminate analysis (PLS-DA) was performed on full-resolution 1H- NMR spectral data...
We have previously reported the use of a methanol:chloroform:water extraction (MeOH:CHCl3:water ext) that produces an aqueous fraction for 1D-1H-NMR, and an organic fraction for lipidomic analysis by LC-/GC-MS analysis or NMR [4,9–11]. However, this protocol is time-consuming and ...
NMR-spectroscopic evidence of intermediate-dependent pathways for acetic acid formation from methane and carbon monoxide over a ZnZSM-5 zeolite catalyst. Angew. Chem. Int. Ed. 51, 3850–3853 (2012) Article CAS Google Scholar Cavell, K. J. Recent fundamental studies on migratory insertion into...
22, No. 8, pp 671---680 (1990) 1H and 2H NMR Analyses of Poly(propylene oxide) Prepared with Organotin-Alkyl Phosphate Condensate in the Presence of Methanol or Methanol-d4 Katsuhito MrnRA,t Tatsuki KITAYAMA, Koichi HATADA,tt and Tetsuya NAKATA* Department of Chemistry, Faculty of ...
17O NMR spectroscopic characterization and the mechanism of formation of alkyl hydrotrioxides (ROOOH) and hydrogen trioxide (HOOOH) in the low‐temperature ozonation of isopropyl alcohol and isopropyl methyl ether: water‐assisted decomposition. Chem. Eur. J. 6, 809–819 (2000). Article Google...
The catalytic performance of PdxAuyNS was evaluated for DOMM in a pressurized reactor (Supplementary Figs.13and14). Gas chromatography and proton nuclear magnetic resonance (1H NMR) spectroscopy were employed to quantify the gaseous and liquid products (Supplementary Fig.15). A CH3OH yield of 7...
(Supplementary Fig.20a–c) show two obvious peaks at 163.1 and 49.5 parts per million, which are attributed to H13COO−and13CH3OH, respectively. From1H NMR spectra in Supplementary Fig.20d,e, we can see the H signals of formate and methanol, which both split into two peaks by coupling...
One of the measures to reduce COVID-19 transmissions recommended by the World Health Organization is hand hygiene, i.e., washing hands with soap and water or disinfecting them using an alcohol-based hand sanitiser (ABHS). Unfortunately, competing ABHSs with unknown quality, safety, and ...