Introduction Nitrogen oxides (NOx) cause the photochemical smog, acid rain, ozone depletion and greenhouse effect. Therefore, a great deal of studies has been performed to reduce NOx by using various catalytic systems such as selective catalytic reduction (SCR) or NOx storagereduction catalyst. Recently, N2O, whose greenhouse effect is 310 times larger than CO2, has been issued due to the new r...

This paper reports results of an investigation into the removal of ARB (Acid Red B) dye in an electrochemical oxidation reactor with semi-conductor suspended in the electrolyte. TiO2 nano-powders spiked with various elements, including Si, Co, Zn, La, Ag, Ce, W and Bi, were prepared by sol-gel method to improve colour removal efficiency. Through the L16(4 4) orthogonal experiment, the optimised...

Objective: This study aims to decompose antibiotic of tetracycline hydrochloride (TCH) in aqueous medium by photocatalysis under the visible light irradiation. Method: Photocatalyst e -Zn(OH)2 was synthesized facile precipitation method from an containing zinc nitrate, using trisodium citrate dihydrate. The characterization as-prepared material confirmed XRD, SEM, FI-IR, and UV-Vis-DR. catalyti...

0.1016/j.nanoen.2 lsevier Ltd. All rig thors. uthor. : [email protected] Abstract Development of efficient bifunctional electrocatalysts from earth abundant elements, simultaneously active for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), remains to be a grand challenge for electrocatalysis. Herein we firstly synthesized a new type of bifunctional catalyst (NCNT/CoxMn1 xO)...

Research results about the influence of BEA zeolite preliminary dealumination on acid–base characteristics and catalytic performance 1% Zn-BEA compositions in propane dehydrogenation with CO2 are presented. The catalyst samples, prepared through a two-step post-synthesis procedure involving partial or complete specimen followed by introduction Zn2+ cations into T-positions framework, were chara...

Cu bound to amyloid-? (A?) peptides can act as a catalyst for the formation of reactive oxygen species (ROS), leading neuropathologic degradation associated with Alzheimer's disease (AD). An excellent therapeutic approach is use chelator that selectively remove from Cu–A?. This should compete Zn2+ ions (Zn) are present in synaptic cleft while forming nontoxic complex. Herein we describe P3, wat...

A novel Zn-based-MOF material, called Zn-URJC-8, containing two different organic linkers, 2-aminoterephtallic acid and 4,4-bipyridyl, has been synthetized used for catalytic purposes the first time. The structure of Zn-URJC-8 determined by single-crystal X-ray diffraction (XRD) showing -NH2 groups inward-facing narrow pores, providing material with excellent properties as CO2 adsorbent. good r...

The Zn-loaded zeolite ZSM-5 is an active and promising catalyst for the conversion of methanol to aromatics with high yield. In this work, we have investigated catalytic performance shaped Zn-ZSM-5/alumina catalysts in reaction at industrially relevant pressures. This has been combined extensive characterization identify Zn species. It clear that introduction leads improved lifetime when carrie...

Dimethyl carbonate (DMC) can be applied as a greener alternative to more hazardous materials, e.g. phosgene or dimethyl sulfate. Herein, one-pot synthesis of DMC from propylene oxide, methanol and CO2 using alkali halide catalysts under mild conditions was studied. Addition Zn powder the K2CO3-NaBr-ZnO catalyst system seen increase selectivity 19.8% (TOF = 39.0 h?1) 40.2% 78.1 at 20 bar 160 °C ...

Ziegler-Natta (ZN) based co-polymerization processes for the production of linear low-density polyethylene (LLDPE) generally give rise to a non-uniform incorporation distribution comonomer. It has been shown that lowering titanation temperature during catalyst synthesis can increase evenness this distribution. However, polymerization process parameters also affect resulting To investigate these...