| abstract |
LOW TEMPERATURE ISOMERIZATION CATALYST COMPOSITIONS ARE PREPARED BY TREATING A CATALYST COMPRISING ALUMINA AND A METALLIFEROUS MATERIAL HAVING HYDROGENATING ACTIVITY WITH A BROMIDE ACTIVATING AGENT COMPRISING A POLYBROMIDE OF A LOWER ALIPHATIC HYDROCARBON, CARBONYL DIBROMIDE, DIBROMOTHIONE, AN ACETYL BROMIDE, THIONYL BROMIDE, SULFUR MONOBROMIDE, A PHOSPHOROUS BROMIDE OR A BORON BROMIDE. |