During polymerization the double bonds are converted to single bonds to form long chains and networks. Therefore the extent of double bond conversion can be used to describe the degree of polymerization. Double bond conversion can be experimentally determined by infrared spectroscopy (IR), Fourier-...
Once the dioxygen is adsorbed via a C–O–O–C configuration, the introduction of the first electron-proton pair (i.e., the first reduction stage) leads to the dissociation of the O–O bond and the formation of one hydrogen bond between both oxygen atoms [117]. This mechanism also ...
Metastable nickel–oxygen species modulate rate oscillations during dry reforming of methane Luis Sandoval-Diaz Daniel Cruz Thomas Lunkenbein Nature Catalysis(2024) Hydroxylated TiO2-induced high-density Ni clusters for breaking the activity-selectivity trade-off of CO2 hydrogenation ...
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
Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. Keep victim warm and quiet. Ensure that medical personnel are aware of the material(s) involved and take precautions to ...
Thermal reaction of a toluene solution of N-silyliminoacyl complexes 3a and 3b at 120 °C in a sealed tube gave a cis/trans mixture of alkyl(silylisocyanide) complexes cis/trans-Cp*(CO)2W(R){CNSi(p-Tol)3} (5a, R = Me; 5b, R = Et) through cleavage of the C−C bond between...
Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and ...
(V) is an analog of PO43−belonging to the hard metal group. Also, considering an abundance of interference ions existed in real sample matrices and most of the synthesized CDs with many oxygen-containing functional groups, the interference caused by nontarget ions needs to be systematically ...
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 = 10,000 h−1 • T = 375 °C • XCO2 = 85% • TOF of ...
The absorption band at 2381.28 cm−1 could correspond to the carbon–carbon double bond structure in the benzene ring or aromatic ring (C = C). The absorption peak at 1091.51 cm−1 could correspond to the stretching vibration of the carbon–oxygen single bond (C–O). The absorption ...