Catalyst system for producing cyclic carbonates and method related thereto
AssigneePtt Exploration and Production Public Company Limited
InventorsTaradon Piromchart, Valerio D'Elia
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Abstract
The present invention provides a catalyst system for producing cyclic carbonates comprising: a pre-catalyst, which is BiCl3 having amounts in the range from 5 to 10% by weight of silica support; a compound having formula (I) wherein: Y is selected from bromide (Br−) or iodide (I−); R1, R2, and R3 are methyl group or R1, R2, and R3 are taken together to form a heteroaryl ring having formula (II) and a silica (SiO2) support.
Claims19
A catalyst system for producing cyclic carbonates comprising:
- a pre-catalyst, which is BiCl3 having amounts in the range from 5 to 10% by weight of silica support;
- a compound having formula (I)
- wherein:
- Y is selected from bromide (Br−) or iodide (I−);
- R1, R2, and R3 are methyl group or R1,R2, and R3 are taken together to form a heteroaryl ring having formula (II)
- and
- a silica (SiO2) support.
A method for producing cyclic carbonates from the reaction of carbon dioxide and epoxide-based compounds which comprises reacting epoxide-based compounds with carbon dioxide in the presence of a catalyst system comprising:
- a pre-catalyst, which is BiCl3 having amounts in the range from 5 to 10% by weight of silica support;
- a compound having formula (I)
- and
- a silica (SiO2) support
- where:
- Y is selected from bromide (Br−) or iodide (I−);
- R1, R2, and R3 are methyl group or R1,R2, and R3 are taken together to form a heteroaryl ring having formula (II)
- wherein said method is performed using a concentration of the catalyst system in the range of 0.1 to 20 mol% relative to the epoxide-based compounds;
- at a pressure of carbon dioxide in the range of 1 to 100 bar;
- a temperature in the range of 10 to 200° C.;
- and a reaction time in the range of 1-8 hours.
Dependencies are inferred from the claim text.