This study used a spatially resolved method to spatial deactivation in monolith cores. The diffusion regime the front and back section of impacts on catalyst core's performance were elucidated.

Production of a biocompatible hyperpolarized bolus for signal amplification by reversible exchange (SABRE) could open the door to simple clinical diagnosis via magnetic resonance imaging. Essential to successful progression to preclinical/clinical applications is the determination of the toxicology profile of the SABRE reaction mixture. Herein, we exemplify the cytotoxicity of the SABRE approac...

The long-term efficiency of proton exchange membrane fuel cells (PEMFC) is largely restricted by the instability of catalyst nanoparticles during fuel cell operation. Due to their large surface area-tovolume ratio, Pt and Pt-alloy nanoparticles have a strong tendency to grow in size over short time scales, which lead to a reduction in their electrochemically-active surface area, and consequentl...

Introduction Chlorinated hydrocarbons (CHCs) have widespread industrial applications as, for example, lubricants, cleaning solvents, heat-transfer fluids, and intermediates of pharmaceuticals, herbicides and fungicides [1].The increasing volumes of CHCs released in the environment, together with the suspected toxicity and carcinogenic properties, have prompted researchers world-wide to find cle...

Catalytic wet oxidation has proved to be effective at eliminating hazardous organic compounds, such as phenol, from waste waters. However, the lack of active long-life oxidation catalysts which can perform in aqueous phase is its main drawback. This study explores the ability of bimetallic supported catalysts to oxidize aqueous phenol solutions using air as oxidant. Combinations of 2% of CoO, F...

A series of MnOx-CeO₂ and MnOx-TiO₂ catalysts were prepared by a homogeneous precipitation method and their catalytic activities for the NO oxidation in the absence or presence of SO₂ were evaluated. Results show that the optimal molar ratio of Mn/Ce and Mn/Ti are 0.7 and 0.5, respectively. The MnOx-CeO₂ catalyst exhibits higher catalytic activity and better resistance to SO₂ poisoning than the...

The pyrolysis of lignocellulosic biomass is one the most promising methods alternative fuels production. However, due to low selectivity this process, quality obtained bio-oil usually not satisfactory and does allow for its direct use as an engine fuel. Therefore, there a need apply catalysts able upgrade composition mixture products. Unfortunately, despite increase in efficiency thermal decomp...

In recent decades, the massive emission of greenhouse gases, such as carbon dioxide and methane, into atmosphere has had a serious impact on ecological environment. The dry reforming methane to syngas cannot only realize resource utilization but also reduce global climate change. It is great significance in reduction. Owing (DRM) being strongly endothermic reaction, it needs be carried out unde...

• Calcium increases Pt-Ge alloy extent by enhancing Ge reducibility. significantly enhances catalyst stability and propylene selectivity. selectively suppresses strong acid sites. Calcium-promoted is less active for coke deactivation, (? d ). Steady state activity increased since Ca decreases ? more than r . The promoting effect of on the catalytic performance Pt 0.5 -Ge 1.5 /Al 2 O 3 during pr...