Table 5. Glycerol Conversion and Product Distribution over CeO₂ with Different Morphologies.

				mass balanceb/%			yieldc/%
entry	catalyst morphology	reaction T/°C	CGLYa/%	C	H	O	Alc.	diols	Ald.	Ket.	Ac.	COx	Unk.	MeOH S.T.Y./g h–1 kgcat–1	carbon depositiond/mg g–1
1	Ce–C	320	17	93	91	91	1.1	1.9	3.0	2.4	0.7	1.0	5.8	4.01
2		360	29	83	81	81	2.7	3.5	5.2	5.9	1.1	1.6	4.4	8.97
3		400	91	61 (62)	53	54	15.6	6.5	5.9	6.4	4.3	7.7	15.5	60.35	47
4	Ce–R	320	65	82	75	73	5.7	8.2	4.1	17.5	5.6	3.3	8.1	39.42
5		360	98	76	66	63	10.4	9.3	7.8	19.8	8.9	6.3	11.8	90.87
6		400	>99	62 (64)	48	56	20.2	0.8	7.8	10.8	1.4	15.1	6.5	164.32	66
7	Ce–P	320	58	91	84	82	4.9	7.3	4.3	17.6	4.1	2.9	11.3	40.21
8		360	96	91	80	76	14.6	12.4	12.4	11.3	11.9	8.9	15.3	121.5
9		400	>99	67 (67)	51	63	23.5	0.3	3.2	15.0	2.1	18.8	4.3	201.3	16

^aGlycerol conversion.

^bCarbon mass balance (±3%) of products detected in GC1 and GC2 (values in parenthesis include coke deposited on the catalyst).

^cYield of products detected in GC1 and GC2; Alc., alcohols; Ald., aldehydes; Ket., ketones; Ac., acids; Unk., unknowns.

^dCalculated from TGA analysis (Figure S13). Reaction conditions; 50 wt % glycerol/water flow 0.016 mL/min, 0.5 g CeO₂, 15 mL/min Ar, 3 h.