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US 12,220,688 B2Granted
Nano size crystal ZSM-5 and its preparation and applications thereof
AssigneeHindustan Petroleum Corporation Limited
InventorsNarasimharao Kanna, Suresh Kumar B, Hemant Mishra, Pramod Kumar
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Abstract
The present invention provides a novel, cost-effective and simple synthetic process for preparing a nano ZSM-5 catalyst which is further utilized in fluid catalytic cracking of feedstock oil containing organic compounds. The nano-ZSM-5 catalyst shows higher selectivity towards olefines and low selectivity towards LCO and bottoms.
Claims11
A process for synthesizing a nano ZSM-5 catalyst, the process comprising:
- (i) adding an aluminum precursor, a quaternary ammonium template and a size controlling agent in an aqueous basic solution in a hydrothermal reactor to obtain a first solution;
- (ii) adding a silica precursor to the first solution to obtain a second solution;
- (iii) stirring the second solution and then conducting aging to form a reaction mixture;
- (iv) heating the reaction mixture in the hydrothermal reactor followed by cooling, then filtering, washing and drying to obtain a solid product;
- and
- (v) calcining the solid product to obtain a calcined product comprising the nano ZSM-5 catalyst,
- wherein the size controlling agent comprises phosphino carboxylic acid.
4 more elements
Dependencies are inferred from the claim text.