• Pristine CaTiO 3 has no activity for SCR deNO x , while Ce-Fe-Mn doped could achieve almost 100% NO conversion at 135°C (GHSV = 72000 h -1 ). By selectively activating gaseous molecules, Ti, Fe, and Mn present apparent synergistic effects on accelerating the catalytic cycle of standard SCR. The photocarriers intensify oxidation rather than NH -to-NH 2 transformation. Although photocatalysis e...

Hydrothermally stable diesel oxidation catalysts (DOCs) with improved low-temperature activity are desired for the abatement of emissions from vehicles. Herein, novel palladium(Pd)/SiO2(core)@Zr(shell) structured DOCs were developed. SiO2 was completely covered by an 8.4 nm thickness Zr-based shell using a hard template method. The SiO2@Zr support decorated Pd and evaluated under simulated exha...

Ammonia has been intensively studied as a clean, sustainable fuel source and an efficient energy storage medium due to its effectiveness hydrogen carrier molecule. However, the currently used Haber–Bosch process requires large fossil input, high temperatures pressures, well significant capital investment. These constraints prevent decentralized small-scale ammonia production at level of small f...

Abstract This paper presents enhanced performances of Fischer-Tropsch (F-T) catalysts modified with Re as a promoter and supported by various structured materials. The traditional Fe-Co based catalyst was prepared the simultaneous impregnation then application wash-coating slurry method to coat on materials, including monolith metallic foams. Their physicochemical properties were characterized ...

The hydrogenation of CO2 into methanol has attracted much attention and In2O3 is a promising catalyst. Introducing metal elements (M/In2O3) one the main strategies to improve its performance. However, mechanism active sites remain unclear need be further elucidated. Here, noble-metal-free Inx-Coy oxides catalysts were prepared. Much-improved performance obvious product selectivity shift observe...

The growing environmental concerns have driven catalytic CO2 valorization as a forward-looking solution to mitigate the carbon footprint of valuable chemical products. conversion processes into synthesis gas, such reforming methane (CRM) or reverse water–gas shift (RWGS), may strategic role for future sustainable production chemicals and energy carriers. However, fuel combustion supply heat ass...

in this article, the effect of operating conditions, such as temperature, gas hourly space velocity (ghsv), ch4/o2 ratio and diluents gas (mol% n2) on ethylene production by oxidative coupling of methane (ocm) in a fixed bed reactor at atmospheric pressure was studied over mn/na2wo4/sio2 catalyst. based on the properties of neural networks, an artificial neural network was used for model develo...