| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a process for preparing simultaneously carbon black and hydrogen which can simultaneously prepare carbon black and hydrogen under lower temp. and pressure conditions in higher yields as compared with the conventional process by feeding ethylene into a reaction system having a specified temp. or above and a specified pressure or higher in the presence of a specified catalyst in an inert atmosphere to decompose ethylene. SOLUTION: This process for preparing simultaneously carbon black and hydrogen comprises feeding ethylene into a reaction system having a temp. of 400 deg.C or above and a pressure of not less than 5kg/cm<2> in the presence of a nickel catalyst in an inert atmosphere to decompose ethylene as represented by the formula, C2 H4→2C+2H2 , thus simultaneously preparing carbon black and hydrogen. Pref., ethylene is introduced into the reaction system at a flow rate of 5 to 50 ml/min.</p> |
