Patent ID: 11891577
Assignee: HINDUSTAN PETROLEUM CORPORATION LIMITED
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 10:
11. The process as claimed in claim 1, wherein the acidity enhanced modified clay is prepared by:
i. treating a clay with an aqueous solution of a mineral acid with a concentration of 0.5 to 5 M under stirring at a temperature in a range of 70 to 100° C. for a time period in a range of 40 to 80 minutes to obtain a mixture;
ii. cooling the mixture to a temperature in a range of 20 to 30° C., followed by filtering the mixture to obtain a residue;
iii. washing the residue with water until the residue is acid free to obtain a mesoporous clay;
iv. adding water and an aqueous solution of a precursor of phosphorus to the mesoporous clay to obtain a slurry; and
v. heating the slurry at a temperature in a range of 40 to 70° C. for a time period in a range of 0.5 to 5 hours to obtain the acidity enhanced modified clay.