CATALYSTS AND AND METHODS OF MAKING AND USING THEM

摘要

1478899 Hydrocarbon conversion catalysts TOYO ENG CORP and FUJIMI KENMAZAI KOGYO CO Ltd 29 June 1974 28973/74 Heading B1E [Also in Division C1] A sintered catalyst for use in the steam reformation, partial oxidation or cracking of hydrocarbons is made by kneading with water either (a) a refractory powder of calcium aluminate substantially free of silicon dioxide or (b) a mixture of said refractory powder and at least one of Al 2 O 3 CaO, BeO, MgO, SrO or a compound which is converted on heating to one of said oxides, moulding the kneaded material into a shaped article, ageing the shaped article for at least one day and then sintering at 1150-1500‹C, the thus sintered catalyst containing 10-60% CaO, 30-90 Al 2 O 3 , -30% of at least one of BeO, MgO or SrO and less than 0.2% of SiO 2 . The catalyst has an apparent porosity of 30-60%, a bulk density of 1.2-2.0, a pore radius of 0.5-5.0 microns and a crushing strength of 120-500 Kg/cm2. The Al 2 O 3 content of the refractory powder is preferably above 65% and may be a refractory alumina cement consisting essentially of calcium aluminate or a powder prepared by heating a mixture of CaO and Al 2 O 3 at 1600- 2000‹C. An organic binding agent and/or a foaming agent may be added to the refractory powder or mixture before kneading.