Pd-In2O3 catalysts are among the most promising alternatives to Cu-ZnO-Al2O3 for synthesis of CH3OH from CO2. However, intrinsic activity and stability In2O3 per unit mass should be increased reduce content this scarcely available element enhance catalyst lifetime. Herein, we propose demonstrate a strategy obtaining highly dispersed Pd nanoparticles onto an Al2O3 matrix by one-step coprecipitat...

In this paper, we used quantum chemical approach to shed light on the catalytic mechanism of γ-carbonic anhydrase (γ-CA) to convert carbon dioxide to bicarbonate ion. Density functional theory (DFT) using B3LYP and UB3LYP functional and three split-valance including 6-31G*, 6-311G** and 6-311++G** basis sets were used to calculate the details of electronic structure and electronic energy of act...

Although there is now some agreement with the view that the supply of photochemical energy may influence photosynthetic rate (P) at high CO2 pressures, it is less clear whether this limitation extends to P at low CO2. This was investigated by measuring P per area as a function of the intercellular CO2 concentration (C,) at different levels of photochemical energy supply. Changes in the latter w...

The activation of carbon dioxide by three different Mo-diimine complexes [Mo(CO)4(L)] (L=bipyridine (bpy), 1,10-phenantroline (phen) or pyridylindolizine (py-indz)) has been investigated electrochemistry and spectroelectrochemistry. Under an inert atmosphere, monoreduction the is ligand-centered leads to tetracarbonyl [Mo(CO)4(L)].− species, whereas double reduction induces CO release. CO2, und...

The direct activation of diluted CO2 in argon was studied a co-axial dielectric barrier discharge (DBD) reactor powered by photovoltaic energy. influence the initial and concentration on decomposition to form CO investigated using copper-based catalyst zone. It observed that conversion higher at lower concentrations. presence diluent gas (argon) also it how has high CO2, improving At highest en...

The development of safe and energy efficient redox processes is key for a future sustainable organic chemistry storage/vector applications. Molecular electrocatalysts have demonstrated their potential in the realm CO2 reduction, however, successful implementations reduction other carbonyl groups remain sporadic. Building on reversibility hydrogenation dehydrogenation carbonyls alcohols, an over...

In this work the kinetic data demanded for kinetic modeling were obtained in temperatures 350, 400, 450 and 500 oC by conducting experimentations on a Fe-Cr nanocatalyst prepared from a novel method and a commercial Fe-Cr-Cu one. The collected data were subjected to kinetic modeling by using two models derived from redox and associative mechanisms as well as an empirical one. The coefficients o...

The preparation of nitrogen-doped activated carbon (NACs) has received significant attention because of their applications in CO2 capture and sequestration (CCS) owing to abundant nitrogen atoms on their surface and controllable pore structures by carefully controlled carbonization. We report high-surface-area porous N-doped activated carbons (NAC) by using soft-template-assisted self-assembly ...

The reduction of CO2 on copper electrodes has attracted great attentions in the last decades, since it provides a sustainable approach for energy restore. During the CO2 reduction process, the electron transfer to COads is experimentally suggested to be the crucial step. In this work, we examine two possible pathways in CO activation, i.e. to generate COHads and CHOads, respectively, by perform...

Activated carbon materials have been prepared by pyrolysis of plasma pretreated recycled PET. The obtained carbon materials have been texturally characterized by N2 (77 K) and CO2 (273 K) adsorption. Atomic force microscopy (AFM) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) have been used to analyze the surface of the treated precursors. Carbon materials obtained by ...