A study on the catalytic activity of new catalysts for removal of NO_x, CH and CO emitted from car dexhaust

Abstract

Three catalysts were prepared from copper oxide carried on a matrix of a mixture of Syrian, Jordanian natural zeolite, Syrian bentonite, and Al 2 O 3-CuO. As a simulation to the field motor car condition, a good quantity of macrosize granules of the catalyst was used, and the initial reacting agents were the car exhaust gases (C.E.G.). Catalytic experiments were conducted by means of a flow micro pulse-like reactor using the gases emitted from car exhaust. When the (Z J B-CuO, Al 2 O 3-CuO) catalyst was applied, the maximal de-CO conversion was as estimated as 60% at 250°C, and 90% for de-CH at 400°C, whereas the de-CH rate conversion of the (ZB-CuO, Al 2 O 3-MoO 3-CuO) catalyst was as much as 80% at 360°C and 78% for de-CO at 360°C. The catalytic data made it possible to suggest a mechanism for each of the ongoing reactions. A maximal de-CH, conversion rate on the (ZB-CuO, Al 2 O 3-CuO) catalyst was reached at 450°C. The N 2 adsorption-desorption measurements were carried out at (À196°C), thermal analysis, and X-ray diffraction for the catalysts were studied as well. A comparative study was conducted between the catalysts [(ZB-CuO, Al 2 O 3-MoO 3-CuO), and (Z J B-CuO, Al 2 O 3-CuO)] and a honeycomb structure commercial catalyst manufactured for use in gasoline vehicles.

Influence of Carbonisation Temperature on the Surface Pore Characteristics of Acid-Treated Oil Palm Empty Fruit Bunch Activated Carbon

“…Nitrogen oxides (NOx), known cumulatively for nitric oxide (NO) and nitrogen dioxide (NO2) are toxic gases as they are perilous to humans and the environment. The formation of acid rain, for example, is due to the reaction between water molecules in the atmosphere and nitrogen oxides (NOx) or sulphur oxides (SOx), which are largely emitted from industries and vehicles [1,2]. One of the methods developed for the treatment of NOx is activated carbon adsorption.…”