# Influence of Synthesis Parameters in Obtaining KIT-6 Mesoporous Material
## 3 Results and Discussions
In general, the samples showed cubic structures had very similar behavior to the standard KIT-6, except in some specific cases discussed below. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Samples** & **d\({}_{(211)}\)/nm** & **d\({}_{(1000)}\)/nm** & **a\({}_{\text{Cub}}\)/nm** & **a\({}_{\text{Hex}}\)/nm** \\ \hline KIT-6 & 5.14 & - & 12.60 & - \\ K0.012 & 5.50 & - & 13.50 & - \\ K0.022 & & 10.70 & - & 12.37 \\ KDT2 & & 11.00 & - & 12.70 \\ KDT4 & 4.53 & - & 11.10 & - \\ KDT8 & 5.15 & - & 12.60 & - \\ Kdt & & 11.00 & - & 12.70 \\ KEt & & 11.40 & - & 13.17 \\ KPr & & 10.10 & - & 11.67 \\ KAT12 & & 10.80 & - & 12.30 \\ KAT18 & 5.12 & - & 12.54 & - \\ KAT30 & 5.20 & - & 12.92 & - \\ KHT12 & 5.13 & - & 12.56 & - \\ KHT18 & 5.14 & - & 12.60 & - \\ KHT30 & 5.17 & - & 12.66 & - \\ \hline \hline \end{tabular} d\({}_{(211)}\) = interplanar distance calculated from \(\lambda\)CuK\(\alpha\) = 2d\({}_{(211)}\). sen \(\theta\); d\({}_{(100)}\) = interplanar distance calculated from \(\lambda\)CuK\(\alpha\) = 2d\({}_{(100)}\). sen \(\theta\); a\({}_{\text{cub}}\) = cubic parameter calculated from \(\alpha\)cub = d\({}_{(211)}\). \(6^{1/2}\) a\({}_{\text{Hex}}\) = hexagonal parameter calculated from a\({}_{\text{Hex}}\) = 2d\({}_{(100)}\)/3\({}^{1/2}\).  
\end{table} 
Table 1: Interplanar distance and mesoporous parameter of all samples with ordered structures. Figure 3: Representative scheme of the data obtained in: (**A**) the molar ratio of P123; (**B**) P123 dissolution time; (**C**) alcohol; and (**D**) aging time. The K0.012 and KAT30 samples presented interplanar distance and mesoporous parameter values higher than the standard KIT-6, while the sample KDT4 presented lower values. Relative to the decrease in P123 concentration (K0.012 sample), it can be determined that this variation directly interfered in the organization of the channels, increasing the distance between them. The data obtained for the KAT30 sample shows that the increase in the standard aging time interferes in the organization of the channels formed in the material. This fact can be related to the function of alcohol in the KIT-6 synthesis, which at long times can lead to an excessive curvature and consequently an influence in the structure, with 24 h being the ideal time. The behavior observed in the KDT4 sample denotes that the decrease in the time destined for the micellar formation directly modifies the organization of the future channels, generating significant reduction of 1.5 nm of the mesoporous parameter. Even for the samples that had two-dimensional hexagonal structures, interesting behaviors can be observed. Analyzing the samples obtained from the alcohol modification, an increase on the values of d\({}_{(100)}\) and a\({}_{\text{hex}}\) of the KMT compared to KEt samples can be observed, and a decrease on these values for KPr sample can be seen. This behavior demonstrates that the alcohol probably can act as a co-solvent or co-template, having a greater influence on the structure according to the size of its chain. Thus, alcohols with chains (C1-C2) that are too short do not interfere in a significant way on the hexagonal organization, indicating the behavior of a co-solvent. However, alcohols with longer chains interfere on the structural organization (the propanol (C3) in this case) or act in such a way that it completely modifies the structure of the material, except for the butanol (C4) that acts as a co-template. The thermogravimetry and differential thermogravimetry (TG/DTG) curves and FTIR spectra for KIT-6, K0.012 and KDT4 representative samples has been represented in Figure 4A-C. The data of other samples can be seen in the supplementary material (Figures S1-S3). Figure 4: **(A)** Thermogravimetry (TG) and (**B**) differential thermogravimetry (DTG) curves of the KIT-6, K0.012 and KDT4 samples; and (**C**) the Fourier-transform infrared spectroscopy (FTIR) spectra of the standard KIT-6 and KDT2 samples.