Catalytic conversion with improved catalyst
AssigneeMobil Oil Corporation
InventorsRobert P. L. Absil, Joseph A. Herbst
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Abstract
A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises clay and a zeolite component, at least one of which has been treated with a phosphorus-containing compound, for example, ammonium dihydrogen phosphate or phosphoric acid, and which is spray dried at a low pH, preferably lower than about 3. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline and increased lower olefins, especially propylene and butylene.
Claims27
A process for converting feedstock hydrocarbon compounds to product hydrocarbon compounds having a lower molecular weight than the feedstock hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising catalyst manufactured by the method comprising the steps of:
- forming a first slurry comprising clay and a source of phosphorus;
- mixing said first slurry with an acid stable zeolite component to form a second slurry;
- and
- spray drying said second slurry at a pH of below 3.
A process for cracking feedstock hydrocarbon compounds to product comprising gasoline and olefins of 3 to 4 carbon atoms which comprises contacting said feedstock at cracking conditions including a temperature of from about 400.degree. C. to about 650.degree. C. with a catalyst composition comprising catalyst manufactured by the method comprising the steps of:
- forming a first slurry comprising clay and a source of phosphorus;
- mixing said first slurry with an acid stable zeolite component to form a second slurry;
- and
- spray drying said second slurry at a pH of below 3.
A process for converting feedstock hydrocarbon compounds to product hydrocarbon compounds having a lower molecular weight than the feedstock hydrocarbon compounds which comprises contacting said feedstock at conversion conditions with a catalyst composition comprising catalyst manufactured by the method comprising the steps of:
- forming a slurry comprising clay, a source of phosphorus, and an acid stable zeolite component;
- and
- spray drying said slurry at a pH of below 3.
A process for cracking feedstock hydrocarbon compounds to product comprising gasoline and olefins of 3 to 4 carbon atoms which comprises contacting said feedstock at cracking conditions including a temperature of from about 200.degree. C. to about 870.degree. C. with a catalyst composition comprising catalyst manufactured by the method comprising the steps of:
- forming a slurry comprising clay, a source of phosphorus, and an acid stable zeolite component;
- and
- spray drying said slurry at a pH of below 3.
Dependencies are inferred from the claim text.