Double bond conversion can be experimentally determined by infrared spectroscopy (IR), Fourier-transform infrared spectroscopy (FTIR), or mid-infrared spectroscopy [8,9]. Upon IR irradiation the atoms of a molecule are energized and vibrate in patterns like stretching, bending, and rotation. Differen...
CO hydrogenation in the presence of added oxygen: New evidence on the reaction mechanism The title reaction produces significant increases in the formation of C2 but not C1 or C3 oxygenates which provide mechanistic evidence concerning carbon–... VDR Mark,D Copperthwaite,R Hunter,... - 《Journa...
TiO2 with exposed (001) facets shows abundant surface oxygen vacancies. • The oxygen vacancies serve as active site for CO2 methanation. [41] 2020 4 wt% Ru/Al2O3 • Fixed bed reactor • H2:CO2:He molar ratio = 5:1:1.5 • T = 200–500 °C • GHSV = 10,00...
Doping with pyridinic nitrogen atoms is known as an effective strategy to improve the activity of carbon-based catalysts for the oxygen reduction reaction. However, pyridinic nitrogen atoms prefer to occupy at the edge or defect sites of carbon materials. Here, a carbon framework named as hydrogen...
Oxygen-containing carbons are promising supports and metal-free catalysts for many reactions. However, distinguishing the role of various oxygen functional groups and quantifying and tuning each functionality is still difficult. Here we investigate the r
Mechanistic studies show that alkenes insert into the Ir-H bond, followed by a rather rare C(sp3)-C(sp3 ) reductive elimination and double C-H activation to eventually lead to the carbene dihydride complex. Alkynes also insert into the Ir-H bond to give vinyls, followed by a rare C(...
The carbon-centered radical is selectively scavenged by oxygen allowing sole observation of the triplet nitrene. We deduce that the singlet nitrene has a ... C Buron,MS Platz - 《Organic Letters》 被引量: 28发表: 2003年 Carbon dioxide effects on olfactory functioning: behavioral, histological an...
Chen, S., Duan, J.J., Zheng, Y., et al.: Ionic liquid-assisted synthesis of N/S-double doped graphene microwires for oxygen evolution and Zn-air batteries. Energy Storage Mater. 1, 17–24 (2015) Google Scholar Liu, Q., Wang, Y., Dai, L., et al.: Scalable fabrication of ...
This bond type also deforms the graphite surface structure which allows for the storage of excess lithium [339]. However, the presence of a negative charge (oxygen functionalities) and also the disordered lattice structure can hinder the formation of the semi-ionic C–F bond and LiF formation ...
The absorption peak at 1091.51 cm−1 could correspond to the stretching vibration of the carbon–oxygen single bond (C–O). The absorption peak at 1613.42 cm−1 could correspond to the stretching vibration of the carbon–oxygen double bond (C = O) (Tang et al., 2020). These ...