Catalytic cracking process
US4784750A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1986 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Jun 4, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J29/084
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a hydrocarbon cracking catalyst containing a mixture of amorphous matrix with a zeolite, the zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio ranging from about 8 to 70, a sodium content lower than 0.15% by weight, a parameter a.sub..degree. of elementary mesh from 24.55 to 24.24.times.10.sup.-10 m, a capacity C.sub.Na to retake sodium ions, expressed in grams of sodium per 100 grams of modified zeolite, higher than 0.85, a specific surface higher than 400 m.sup.2.g.sup.-1, a sodium ion uptake steam adsorption capacity at 25.degree. C. (with a P/Po ratio of 0.10) higher than 6% by weight, a pore distribution such that from 1 to 20% of the pore volume is pores of a diameter ranging from 20 to 80.10.sup.-10 m, the remaining pore volume being essentially pores of a diameter lower than 20.10.sup.-10 m, the matrix being characterized by the following textural properties: PA1 S .gtoreq.100 m.sup.2.g.sup.-1 PA1 TPV .gtoreq.0.4 cm.sup.3.g.sup.-1 PA1 PV.sub.75 .gtoreq.0.25 cm.sup.3.g.sup.-1 PA1 PV.sub.75 /TPV .gtoreq.0.5
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.