Iron oxide cluster induced barrier-free conversion of nitric oxide to ammonia

2015 ◽  
Vol 51 (19) ◽  
pp. 4062-4064 ◽  
Author(s):  
Keisuke Takahashi
Keyword(s):  
Nitric Oxide ◽  
Density Functional Theory ◽  
Iron Oxide ◽  
Nitrogen Oxide ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Oxide Cluster ◽  
Functional Theory ◽  
No Conversion ◽  
Barrier Free

Nitrogen oxide (NO) conversion to ammonia (NH3) over iron oxide clusters is investigated using density functional theory calculations.

A flat-lying dimer as a key intermediate in NO reduction on Cu(100)

2021 ◽  
Author(s):  
Kenta Kuroishi ◽  
Muhammad Rifqi Al Fauzan ◽  
Ngoc Thanh Pham ◽  
Yuelin Wang ◽  
Yuji Hamamoto ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Density Functional Theory ◽  
Scanning Tunneling Microscope ◽  
Density Functional ◽  
No Reduction ◽  
Density Functional Theory Calculations ◽  
Scanning Tunneling ◽  
Functional Theory ◽  
Tunneling Microscope ◽  
Electron Energy Loss

The reaction of nitric oxide (NO) on Cu(100) is studied by scanning tunneling microscope, electron energy loss spectroscopy and density functional theory calculations. The NO molecules adsorb mainly as monomers...

Decomposition of nitric oxide by rhodium cluster cations at high temperatures

2021 ◽  
Author(s):  
Toshiaki Nagata ◽  
Kimihiro Kawada ◽  
Xuemei Chen ◽  
Masato Yamaguchi ◽  
Ken Miyajima ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Density Functional Theory ◽  
Gas Phase ◽  
High Temperatures ◽  
Thermal Desorption ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Decomposition Reactions ◽  
Thermal Desorption Spectrometry

Decomposition reactions of NO molecules on gas-phase Rhn+ (n = 6–9) clusters were investigated by gas-phase thermal desorption spectrometry and density functional theory calculations. We found that NO adsorbs on...

Is a Non-Transition Element Nitride Ferromagnet Ever Achievable? Indication of the N-N Pairing Instability

2006 ◽  
Vol 71 (11-12) ◽  
pp. 1525-1531 ◽  
Author(s):  
Wojciech Grochala
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Transition Element ◽  
Density Functional Theory Calculations ◽  
Functional Theory

The enthalpy of four polymorphs of CaN has been scrutinized at 0 and 100 GPa using density functional theory calculations. It is shown that structures of diamagnetic calcium diazenide (Ca2N2) are preferred over the cubic ferromagnetic polymorph (CaN) postulated before, both at 0 and 100 GPa.

scholarly journals Tensor-structured algorithm for reduced-order scaling large-scale Kohn–Sham density functional theory calculations

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Chih-Chuen Lin ◽  
Phani Motamarri ◽  
Vikram Gavini
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Large Scale ◽  
Density Functional Theory Calculations ◽  
System Size ◽  
Real Space ◽  
Functional Theory ◽  
Reduced Order ◽  
Separable Approximation ◽  
Tensor Basis

AbstractWe present a tensor-structured algorithm for efficient large-scale density functional theory (DFT) calculations by constructing a Tucker tensor basis that is adapted to the Kohn–Sham Hamiltonian and localized in real-space. The proposed approach uses an additive separable approximation to the Kohn–Sham Hamiltonian and an L1 localization technique to generate the 1-D localized functions that constitute the Tucker tensor basis. Numerical results show that the resulting Tucker tensor basis exhibits exponential convergence in the ground-state energy with increasing Tucker rank. Further, the proposed tensor-structured algorithm demonstrated sub-quadratic scaling with system-size for both systems with and without a gap, and involving many thousands of atoms. This reduced-order scaling has also resulted in the proposed approach outperforming plane-wave DFT implementation for systems beyond 2000 electrons.

Sign in / Sign up

Export Citation Format

Share Document