HIGH ACTIVITY SMALL CRYSTAL ZSM-12

摘要

A POROUS, CRYYSTALLINE MATERIAL IS DESCRIBED HAVING THE FRAMEWORK STRUCTURE OF ZSM- 12 AND A COMPOSITION INVOLVING THE MOLAR RELATIONSHIP: X2O3 : WHEREIN X IS A TRIVALENT ELEMENT, Y IS A TETRAVALENT ELEMENT AND N IS LESS THAN 60. THE MATERIAL HAS AN AVERAGE CRYSTAL SIZE OF THE MATERIAL IS LESS THAN 0.1 MICRON AND A DIFFUSION PARAMETER FOR MESITYLENE OF AT LEAST 1000 X 10-6 SEC-L WHEN MEASURED AT A TEMPERATURE OF 100 °C AND A MESITYLENE PRESSURE OF 0.27 KPA (2 TORR).(FIG 4)