Volatile organic compounds (VOCs) in cooking oil fumes need to be efficiently removed due the significant damage they cause environment and human health. This review discusses emission characteristics, which are influenced by different temperatures, oils, cuisines. Then, various fume purification methods mainly classified into physical capture, chemical decomposition, combination methods. VOCs ...

Mechanistic kinetic models were postulated for the catalytic steam reforming of concentrated crude ethanol on a Ni-based commercial catalyst at atmosphere pressure in the temperature range of 673-863 K, and at different catalyst weight to the crude ethanol molar flow rate ratio (in the range 0.9645-9.6451 kg catalyst h/kg mole crude ethanol) in a stainless steel packed bed tubular microreactor....

The governing mechanism of surface reactions is a fundamental concern in heterogeneous catalysis. The Langmuir–Hinshelwood (LH) mechanism is widely accepted to control the surface reactions in many catalytic systems. This contribution derives and compares several important surface rate equations to evaluate their quality of fitting to the experimental data collected for a vapor-phase hydrogenat...

Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of ...

A type of novel mineral-derived catalyst (MDC) composed vanadium–titanium magnetite and sintering ore was prepared via calcination or acid modification for selective catalytic reduction nitrogen oxides (NOx) with ammonia (NH3) to reduce the production cost simplify preparation process. Characterizations by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectromet...

We report herein a new sulfur-functionalized MXene Ti2C (Ti2CS2)-supported osmium-metal single-atom catalyst (SAC) Os1/Ti2CS2 with high low-temperature catalytic activity for CO oxidation. Using periodic density functional theory calculations, the most stable SAC, Os1/Ti2CS2, has been screened from series of group 8–11 transition metal SACs M1/Ti2CS2 (M = Fe, Co, Ni, Cu; Ru, Rh, Pd, Ag; Os, Ir,...

Formaldehyde has been widely observed in the icy mantle of interstellar grains. H 2 CO may be formed from successive hydrogenations and further contribute to chemical complexity Interstellar medium (ISM) participating heterogeneous reactions with colliding gas phase atoms. Within this context, Eley-Rideal Langmuir-Hinshelwood rate constants formation on a formaldehyde doped amorphous water ice ...

Abstract Understanding how the H2 molecule is formed under chemical conditions of interstellar media (ISM) critical to whole chemistry it. Formation in ISM requires a third body acting as reservoir energy. Polycyclic aromatic hydrocarbons (PAHs) are excellent candidates play that role. In this work we simulated collisions hydrogen atoms with coronene form via Eley-Rideal mechanism. To do so, us...

To gain insight into the nitrogen-related gas-surface reaction dynamics on carbon-based thermal protection systems of hypersonic vehicles, we have investigated adsorption, diffusion, and reactions atomic nitrogen, N(4S), (0001) face graphite using periodic density functional theory with a dispersion corrected functional. The nitrogen is found to bind pristine at bridge site, barrier 0.88 eV for...

SO2 poisoning is a great challenge for the practical application of Mn-based catalysts in low-temperature selective catalytic reduction (SCR) reactions NOx with NH3. A series Gadolinium (Gd)-modified MnOx/ZSM-5 were synthesized via citric acid–ethanol dispersion method and evaluated by NH3-SCR. Among them, GdMn/Z-0.3 catalyst molar ratio Gd/Mn 0.3 presented highest activity, which 100% NO conve...