Table 3. Description of Synthesis Steps for Synthetic Gel Batches Corresponding to Steps a–i in Figure 1^a.

		CJ2					CJ3			ISG
label	synthesis steps	CJ2.3.B	CJ2.3.E	CJ2.7.B	CJ2.9.A	CJ2.9.B	CJ3.3.B	CJ3.7.A	CJ3.9.A	ISG.3.B	ISG.7.A	ISG.9.B
a	ethanol (mL)	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50
	H2O (mL)	0.424	0.424	0.424	0.424	0.424	0.424	0.424	0.424	0.424	0.424	0.424
	TEOS (mL)	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
	catalyst	0.22 mL of 0.1 M HNO3	0.25 mL of 0.1 M HNO3	NA	NA	NA	0.44 mL of 0.1 M HNO3	18 μL of 0.1 M NH4OH/NH4F	NA	0.22 mL of 0.1 M HNO3	18 μL of 0.1 M NH4OH/NH4F	40 μL of conc. NH4OH
	pH	4	3.5	NA	5	NA	3	7	NA	3	6.5–7	8–8.5
	mixing time (h)	5.5	6.5	5.5	7	7	22.5	∼6	7	24	8	5
b	ethanol (mL)	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50	5.50
	Al(OBus)3 (mL)	0.801	0.801	0.801	0.800	0.800	0.860	0.860	0.860	0.842	0.814	1.544
	Zr(IV) prop (mL)	NA	NA	NA	NA	NA	NA	NA	NA	0.240	0.288	0.580
c	mixing time (h)	18	6.5	18	18	19	21	11.25	18	23	18.75	17
	pH after mixing	NA	NA	NA	NA	NA	1	NA	NA	1–1.5	2	1.5
d	CaMeEt (mL)	NA	NA	NA	NA	NA	2.90	2.290	2.290	0.906	0.906	2.438
	NaOEt (mL)	1.586	1.586	1.586	1.586	1.586	0.528	0.528	0.528	1.358	1.598	0.878
e	mixing time (h)	6	12.15	6	5.5	5.75	5.5	21.75	22.25	27	7.5	31
	pH after mixing	NA	NA	NA	NA	NA	8	NA	6.25	8	11	11
f	gelling agent	0.19 mL of 0.10 M HNO3, 0.8 mL of conc HNO3, 1.271 mL of H2O	1.020 mL of H2O	17 μL of NH4OH/NH4F	0.3 mL of NH4OH/NH4F, 1.271 mL of H2O	1.270 mL of H2O	1.251 mL of H2O	1.271 mL of H2O	1.10 mL of NH4OH/NH4F, 1.271 mL of H2O	1.271 mL of 0.1 M HNO3	1.254 mL of 0.1 M HNO3	1.572 mL of H2O
g	pH after gelling agent addition	3.25	7	11	10	8.5	8	7	8.75	8	10.5	9
h	gelation time (days)	19	5	7.25	0	0	2	7	9	1	10.5	1
i	aging time (days)
	i.1	7	7	1	3	14	7	17	3	7	15	30
	i.2	31	30	3	7	30	15	17	7	15	49	45
	i.3	45	61	15	15	45	45	17	15	47	60	75
	i.4	60	75	60	30	76	60	30	30	60	75	90
	1.5	NA	NA	NA	NA	NA	NA	45	90	NA	NA	NA

^aNonapplicable entries are indicated as NA.