background diatomite coated by nanoparticles of copper and zinc mixed oxides were used to investigate catalytic oxidation of carbon monoxide. objectives aim of this paper was to investigatediatomite performance as a supporting host to confine the cuo and zno nanoparticles and its catalytic activity for carbon monoxide oxidation. materials and methods the prepared catalysts were characterized by...

heterogeneous catalytic hydrogenation of cyclohexene, catalyzed by pt/a1203, was carried out in thirteenvarious solvents (four alcoholic solvents, six aprotic polar solvents and three non polar solvents) at 25 °c.single-parameter correlations of logk vs. normalized polarity parameter (etn), hydrogen-bond acceptorbasicity (p), hydrogen-bond donor acidity (a) and dipolarity/polarizibility (it*) d...

in the present work, the modified nickel electrode was electrochemically fabricated and tested for the electro-oxidation of paracetamol in alkaline media. the methods of cyclic voltammetry (cv), chronoamperometry (ca), and impedance spectroscopy (eis) were used to determine kinetic parameters such as transfer coefficient (α), the catalytic reaction rate constants (k), and the diffusion coeffici...

a catalytic spectrophotometric method for determination of ultra-trace quantities of manganese(ii) id described. the method is based on the catalytic effect of manganese(ii) on the oxidation reaction of ferroin by potassium periodate in acidic media. the reaction is monitored spectrophotometrically at 510 nm by a slope method and mn(ii) is determinable in the range of 1-1000ngml-1. the limit of...

The reusable and easily separable nano-copper ferrite has been used to study its excellent catalytic behavior for thermolysis of modified nitrotriazolone (NTO), an insensitive energetic material act as oxidizer chemical propulsion systems.

Development of efficient electrocatalysts for oxygen reduction reaction (ORR) is one of the most important issues for optimizing the performance of fuel cells and metal-air batteries. The introduction of nitrogen into carbon nanostructures has created new pathways for the development of non-precious electrocatalysts in fuel cells. In this work, nitrogen-doped graphene (NG) was synthesized by a ...

For the first time, secondary steel slag, material directly coming from ladle treatments, is used as a catalyst for biodiesel production without undergoing any preliminary chemical or thermal modifications. Catalytic 1, which has been pre-ground to sizes below 230 mesh, characterized surface textural properties and in transesterification of triglycerides soybean oil produce biodiesel. Reaction ...

the synthesis of nano- structured cobalt through a controlled chemical process followed by heat treating at various temperatures is studied. the product is characterized by icp, xrd, fesem , and tem, indicating that the as- synthesized particles have an amorphous structure with 1.76 for co/b ratio, an average size of 50 nm. the transformation of intermediate phases into single phase nano- cryst...

Palladium nanoparticles in the form of a layer on surface an electrode are shown to be electrocatalytic with respect four-electron oxidation hydrazine dinitrogen. Quantitative voltammetry shows that reduced overpotential comparison both carbon and bulk palladium electrodes partly arises from increased area interface catalytic activity relative material. The per unit as compared material is ca. ...

This chapter described the advancements in development of nanostructured supported material and enzyme immobilization techniques. The functionalized nanomaterials extremely affect inherent mechanical properties provide highest biocompatibility specific nano-environment surrounding enzymes for improving stability, catalytic performance, reaction’s activities. on considerably enhances robustness ...