| 摘要 |
<p>The present invention provides an oxide material having in its calcined form an X-ray diffraction pattern including values substantially as set forth in Table (I) and an adsorption capacity for 1,3,5-trimethylbenzene at a temperature of 42 °C and a pressure of 173.3 Pa (1.3 torr) of at least 0.50 mmol/g; a process for its preparation; a catalyst composition containing it; and use of the catalyst composition in a process for catalytically cracking a hydrocarbonaceous feedstock.</p> |
