Adsorption centers

Xem 1-4 trên 4 kết quả Adsorption centers

Understanding the adsorptive interactions of carbon dioxide with metal-organic framework (IRMOF-1) using a theoretical approach

Density Functional based Tight-binding method with dispersion corrections and Molecular Dynamics (MD) simulations were performed to study the carbon dioxide (CO2) adsorption process on a metal-organic framework (IRMOF-1). The adsorption centers, adsorption energy, adsorption capacity, diffusion coefficient, and the effect of temperature on the adsorption process have been thoroughly examined and elucidated.

11p vidudley 20-02-2023 5 2 Download

Experimental and theoretical study of NH3 adsorption and desorption over a Cu-chabazite NH3-SCR catalyst

NH3 adsorption and desorption behavior of a commercial Cu-chabazite (CHA) NH3 selective catalytic reduction (NH3 -SCR) catalyst was studied in the presence and absence of H2O. NH3 uptake values at various adsorption temperatures were obtained during various steps of the adsorption and temperature-programmed desorption (TPD) experiments. Total NH3 uptake decreased from 4.6 to 1.6 g NH3/L catalyst when the adsorption temperature was increased from 50 to 300◦C.

13p tudichquannguyet 29-11-2021 9 1 Download

A study on methanation of carbon monoxide over catalysts NiO/TiO2 and NiO/γ-Al2O3

The catalyst 7.5% NiO/TiO2 and seven samples of NiO/γ-Al2O3 with NiO content from 7.5% to 60% have been obtained and studied. Physico-chemical characteristics of the catalysts were determined by methods of Adsorption (BET), X-ray Diffraction (XRD), TemperatureProgrammed Reduction (TPR) and Hydrogen Pulse Titration. The catalytic properties of the obtained samples were investigated in the reaction of CO methanation at temperatures 180 – 220◦C and mole ratios hydrogen/carbon monoxide 25-100.

16p 12120609 01-06-2020 5 0 Download
Nghiên cứu tính chất của Bazơ của zeolit bằng phương pháp hóa lượng tử

The basic properties of zeolites were studied by using quantum-chemical calculations. The obtained results have demonstrated that the basicity of zeolites in the forms of alkali cations (Li, Na or K) is increased with increasing cation radius. While the Si/Al ratio in the framework increases, the basicity of zeolites decreases. The application of adsorption method using acidic gases (CO2) for determining basicity may be suitable for solid bases without exhanged ion, but not for zeolites.

6p uocvong04 24-09-2015 62 3 Download