Abstract:
FIG-01 SPENT ACTIVE CARBON, RECOVERED FROM SECONDARY SEWAGE TREATMENT AND FROM BEER AND SUGAR REFINING, IS REGENERATED BY RAPIDLY HEATING IT IN THE DISPERSED PHASE IN THE PRESENCE OF AN ACTIVATING ATMOSPHERE. THE ACTIVATING GASES ARE PREFERABLY STEAM OR CARBON DIOXIDE OR BOTH.
Abstract:
A PROCESS FOR REGENERATING A METALLIC COPPER CATALYST USED IN PRODUCING CORRESPONDING AMIDE COMPOUNDS FROM NITRILE COMPOUNDS BY HYDRATING THEIR NITRILE RADICAL, COMPRISING TREATING THE CATALYST WITH AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM COMPOUNDS, POTASSIUM COMPOUNDS, CALCIUM COMPOUNDS AND AMMONIUM COMPOUNDS.
Abstract:
Deactivated catalysts containing Group VIII metal contact agents are regenerated by a process comprising impregnating the deactivated composite material with tin or a tin compound. Preferably, the tin-impregnated composite is thereafter calcined. The process is particularly suitable for the regeneration of deactivated reforming and dehydrogenation catalysts.
Abstract:
A hydrocracking catalyst containing an Iron Group metal on a silica-aluming refractory oxide support is deactivated by contact with water vapor at elevated temperatures. The catalytic activity and stability are improved by treating the catalyst in the presence of sulfide with a gas comprising hydrogen and a fluorine compound at a temperature of about 250* to 550* C.
Abstract:
A CONTINUOUS PROCESS FOR ALKYLATION OF A BRANCHED CHAIN HYDROCARBON WITH AN OLEFIN IN THE PRESENCE OF A CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYST EMPLOYING A REACTION MIXTURE IN WHICH THE MOLAR RATIO OF ISOPARAFFIN TO OLEFIN IS EXTREMELY LOW COMPARED TO CONVENTIONAL ALKYLATION, I.E. GENERALLY BELOW 3 TO 1 FOLLOWED BY REGENERATION AND REUSE OF THE CATALYST SO EMPLOYED.
Abstract:
A PROCESS FOR NON-OXIDATIVE REGENERATION OF COKED HYDROCONVERSION CATALYSTS CHARACTERIZED BY INCORPORATING ON A COKED CATALYST A HYDROGENATION METAL COMPOUND (PREFERABLY IN SITU) FOLLOWED BY CONTACT WITH HYDROGEN AND PREFERABLY HYDROGEN PLUS HYDROGEN SULFIDE AT ELEVATED TEMPERATURES.