BMC Chemistry

Table 3 Conversion and selectivity in the coupling of PO and CO₂ to produce PC catalysed by talc and vermiculite under different conditions

From: Synthesis of cyclic carbonates from epoxides and carbon dioxide catalyzed by talc and other phyllosilicates

Entry	Catalyst	Temperature	Pressure (Bars)	PO Conversion [%]	PC Selectivity [%]
1	Talc	100	20	59.3	94.4
2	Talc	100	30	60.5	94.6
3	Talc	120	30	68.7	94.2
4	Talc	130	30	87.6	94.3
5	Talc	140	10	97.5	93.6
6	Talc	140	20	98.0	93.9
7	Talc	140	30	98.9	93.7
8	Talc	140	35	99.0	93.4
9	Talc	150	30	99.3	92.2
10	Vermiculite	140	30	90.1	95.3
11	Vermiculite	150	30	92.6	93.7
12^a	Talc	140	30	70.8	94.0
13^b	Talc	140	30	99.2	92.8
14^c	Talc	140	30	95.3	87.0
15^d	Talc	140	30	96.8	92.4

Reaction conditions: propylene oxide (10 mmol), catalyst (100 mg), TBAB (2.5 mol % of epoxide), CO₂ (10–35 bars), MeCN (5 ml), Temperature (100–150 °C), Time (20 h)
PO propylene oxide, PC propylene carbonate
^aTime 12 h
^bTime 24 h
^cCH₂Cl₂ solvent
^dDMF solvent

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ISSN: 2661-801X

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