(a), evaluation of H2/CH4 separation performance of high-silica CHA membrane in the presence of water vapor and light hydrocarbon impurities (b), schematic diagram of the formation of covalent linkers on substrate surface and in-situ growth of a LTA membrane (c), and the single-gas ...
different Cu-NxBysites. This is also supported by analyzing the crystal orbital Hamilton population (COHP) (Supplementary Fig.6). The COHP analysis showed that, the intermediate CHO* adsorbs on CuN4through C atom bonding with Cu (C-Cu), where the antibonding states of C-Cu bond is parti...
[Bi2O2]2+ has a strong covalent bond, which connects to the [X]− layer through the van der Waals force along the c-axis direction. Weak van der Waals forces and strong covalent bonds lead to the formation of layered structures. Xnp (n = 3, 4, and 5 corresponding to X = Cl,...
It can be seen from Figure 7a that at low shear rates, the molecular chains exhibit localized slipping and separation, resulting in the stretching of covalent bonds between monomers and opening of bond angles, and the polymer chains are partially stretched at this time. As the shear rate ...