Table 3. Catalytic Results Obtained for Sugar Conversion with Different Catalysts Using Glucose (160 °C, 20 h, 160 mg of Catalyst and 225 mg of Glucose). Methyl Lactate (ML), Methyl Glycolate (MG), Pyruvaldehyde Dimethyl Acetal (PADA), 1,1,2,2-Tetramethoxypropane (TMP), and Nonidentified Products (N.I.P.). Deviations Shown in the Table Correspond to the Error of 6 Tests for Run 1, 4 Tests for Runs 3, and 2 Tests for Run 4. In the Other Runs, the Deviations Correspond to the Error of Analysis in One Test.

run	catalyst	yield (%)					total yield (%)	sugar conv. (%)	TONd
		ML	MG	PADA	TMP	n.i.p.
1	Sn-In-MCM-41	69.4 ± 1.6	1.2 ± 0.3	2.5 ± 0.2	3.1 ± 0.6	4.1 ± 0.3	80.3	>99.7	40.9
2	Sn-MCM-41	46.5 ± 0.5	0.9 ± 0.1	3.9 ± 0.3	2.0 ± 0.1	2.7 ± 0.7	56.0	>99.7	18.3
3	In-MCM-41	26.4 ± 1.6	1.2 ± 0.2	4.4 ± 0.7	0.7 ± 0.0	4.4 ± 0.1	37.1	99.4	19.0
4	Sn-In-MCM-41a	73.9 ± 0.8	1.2 ± 0.1	2.2 ± 0.1	2.4 ± 0.3	3.5 ± 0.1	83.2	>99.4	45.9
5	Sn-MCM-41a	56.5 ± 2.9	0.3 ± 0.1	1.1 ± 0.5	1.3 ± 0.2	1.9 ± 0.4	61.1	>99.4	23.4
6	SnCl2 + InCl3	24.1 ± 0.4	1.9 ± 0.1	8.2 ± 0.0	1.0 ± 0.04	3.2 ± 0.1	38.4	98.9	14.2
7	Sn-MCM-41 + In-MCM-41b	42.1 ± 1.6	1.6 ± 0.4	4.3 ± 0.4	1.7 ± 0.01	4.2 ± 0.2	53.9	>99.7	21.4
8	Sn-MCM-41 + In-MCM-41c	33.8 ± 1.1	1.3 ± 0.3	4.8 ± 0.2	1.5 ± 0.02	4.3 ± 0.3	45.7	>99.7	20.0

^aSugar: sucrose, reaction time: 24 h.

^b80 mg of each one.

^c63.9 mg of Sn-MCM-41 and 78.4 mg of In-MCM-41.

^dTON was calculated as mole of ML generated per mol of metal in catalyst at 20 h.