Patent Profile
| Patent No: | US6740619 [USA] | Application No: | 09/804994 |
| Title: | Process for the preparation of a catalyst useful for liquid-liquid sweetening lpg and light petroleum distillates | ||
| Issue Date: | 25-05-2004 | File Date: | 13-03-2001 |
| Inventor(s): | SAIN; BIR (DEHRADUN, IN); PURI; SOM NATH (DEHRADUN, IN); DAS; GAUTAM (DEHRADUN, IN); BALODI; BHAGWATI PRASAD (DEHRADUN, IN); KUMAR; SUNIL (DEHRADUN, IN); KUMAR; ANIL (DEHRADUN, IN); KAPOOR; VIRENDRA KUMAR (DEHRADUN, IN); BHATIA; VIRENDRA KUMAR (DEHRADUN, IN); RAO; TURUGA SUNDARA RAMA PRASADA (DEHRADUN, IN); RAI; GUR PRATAP (MUMBAI, IN) | ||
| IPC Classification: | B01J 031/00, C10G 019/00 | ||
| Abstract: | The present invention relates to a process for the preparation of metal phthalocyanine sulphonamide [MPc(SO2 NHR)x ] catalyst useful for sweetening of LPG and light petroleum distillates which comprises reacting a metal phthalocyanine with chlorosulphonic at 90-150.degree. C. for 1-5 hrs. cooling the reaction mixture adding 1-7 parts of a chloride reagent heating the said mixture at 60-80.degree. C. from 0.5-3 hrs. to obtain the metal phthalocyanine sulphonyl chloride, isolating it by adding the reaction mixture in ice cold water, reacting the isolated metal phthalocyanine sulphonyl chloride with an amine of general formula H2 NR where R is selected from hydrogen, aryl, alkyl and cycloalkyl in an aqueous or non-aqueous medium or a mixture thereof at a temperature in the range -4 to 15.degree. C. and at a pH ranging between 7-9 in the presence of an binding agent to obtain the described metal phthalocyanine sulphonamide catalyst wherein the chloride reagent used is selected from the group consisting of thionyl chloride, phosphorus trichloride and phosphorus pentachloride, the binding agent used is selected from the group consisting of sodium bicarbonate, sodium carbonate, sodium hydroxide and tertiary organic bases selected from pyridine triethyl amine and piperidine and the catalyst metal phthalocyanine sulphonamide is selected from the group consisting of cobalt, manganese, nickel, iron vanadium phthalocyanine sulfonamide most preferably cobalt phthalocyanine sulphonamide. | ||
| Licensing Option: | License is already granted. Technology has already been Commercialized. Further license is possible. | ||
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