Carbon dioxide (CO2) is one of the main gases produced by human activity and is responsible for the green house effect. Numerous routes for CO2 capture and reduction are currently under investigation. Another approach to mitigate the CO2 content in the atmosphere is to convert it into useful species such as hydrocarbon molecules that can be used for fuel. In this view, copper is one of the most...

Understanding the activity and selectivity of molecular catalysts for CO2 reduction to fuels is an important scientific endeavour in addressing the growing global energy demand. Cobalt–terpyridine compounds have been shown to be catalysts for CO2 reduction to CO while simultaneously producing H2 from the requisite proton source. To investigate the parameters governing the competition for H redu...

The use of renewable energies, especially in metropolises has led to a reduction in environmental pollution and greater access to clean, renewable and sustainable energy. This paper evaluates the effectiveness of a national plan adopted by the Tehran city council for reducing air pollutions. This plan is designed to increase the share of renewable energies in residential buildings. This study a...

The kinetics of CO2 reduction over nonstoichimetric ceria, CeO2-δ, a material of high potential for thermochemical conversion of sunlight to fuel, has been investigated for a wide range of nonstoichiometries (0.02 ≤ δ ≤ 0.25), temperatures (693 ≤ T ≤ 1273 K), and CO2 concentrations (0.005 ≤ pCO2 ≤ 0.4 atm). Samples were reduced thermally at 1773 K to probe low nonstoichiometries (δ < 0.05) and ...

Phosphine is shown to catalyse the reaction of CO2 with 9-BBN to give mixtures of HCO2(B(C8H14)) 3, H2C(OB(C8H14))24 and MeOB(C8H14) 5; at 0.02 mol% of tBu3P 5 is obtained in 98% yield at 60 °C with TON of almost 5500 and a TOF of 170. Under stoichiometric conditions the species (R3PCH2O)(HC(O)O)B(C8H14) (R = tBu 1,4-MeC6H42) were isolated and characterized.

the mononuclear gd(iii) complex, [gd(l)3(h2o)5] (where l is alizarin yellow r (nac13h8n3o5)), has been prepared in h2o under reflux condition. the gd(iii) complex has been characterized by elemental analysis and spectroscopic methods (uv–vis and ft–ir). the gd2o3 nanoparticles were prepared by the calcination of the gd(iii) complex in air at different temperatures up to 600 °c for 2 h. the calc...

A stable life support system in the spacecraft can greatly promote long-duration, far-distance, and multicrew manned space flight. Therefore, controlling concentration of CO2 is main task regeneration system. The electrocatalytic reduction effectively treat generated by human metabolism. This technology has potential application value good development prospect utilization station. In this paper...