the range between 0 03 to 0 5 the molar ratio of ag to ctab varied in the range of 0 75 1 3 the molar ratio of ag to hydrazine varied in the range of 0 75 1 3 the mixing gel was stirred for 2 6 h at room temperature the product was filterer with excess water and dried in an oven with temperature range of 100 120 u00b0 c the dried product was calcined in a furnace in the temperature range of 300 750 u00b0 c the reaction was carried out in a fixed bed down flow high pressure reactor by charging a catalyst for 1 to 30 h to get propylene oxide the pressure of the reactor was maintained by using oxygen and the oxygen pressure is preferably in the range 2 to 5 mpa the reaction temperature is preferably in the range 150 400 u00b0 c the weight hourly space velocity whsv is preferably in the range 5000 to 20000 ml hr gm propylene was introduced in the reactor by using mass flow controller the reaction mixtures were analysed by two online gcs with an fid detector by using capillary column for hydrocarbons and a tcd detector by using a porapack q column for inorganic materials the following examples are given by way of illustration of the working of the invention in actual practice and should not be construed to limit the scope of the present invention in any way an aqueous solution of a given amount of silver nitrate agno3 0 787 g was added to vigorously stirred tungstic acid h2wo4 10 77 g solution the ph of the medium was made 9 by adding ammonium hydroxide solution then an aqueous solution of cetyltrimethyl ammonium bromide ctab 1 26 g was added to the.