الفهرس | Only 14 pages are availabe for public view |
Abstract The structures of NH4-Y zeolite and some of its dealuminated products were investigated by using the DTA and X-Ray differaction techniques. the textural properties were studied by measuring the adsorption of nitrogen at -196°c and of carbon dioxide at 25°c using conventional volumetric apparatus. the acidities of the zeolite catalysts were determined by following the adsorption and desorption of pyridine using a gravimetric apparatus. |