# Influence of Synthesis Parameters in Obtaining KIT-6 Mesoporous Material
## 3 Results and Discussions
The results obtained in the modification on molar proportion of organic template reveals that the reduction of P123 concentration (K0.012 sample) promoted a decrease of more than 130 m\({}^{2}\).g\({}^{-1}\) in specific area, and 0.13 cm\({}^{3}\).g\({}^{-1}\) in the values of the mesoporous volume. These variations can be explained by the decrease of micelles formed in the initial phase of the synthesis, reducing the interaction of the Si-OH groups with the organic phase. As a consequence, there was a restriction in the quantity of channels formed, resulting in a lower value of mesoporous volume, when compared with the standard KIT-6 material, since both have 3D cubic structure. The significant value of total volume for the K0.012 sample can be explained by the adsorbed volume at pressures above 0.8 P/P\({}_{0}\), which volume can be attributed to the interparticle spaces. For the K0.022 sample, it denotes that the increase in concentration of P123 provided the formation of a material with unidirectional hexagonal structure like as SBA-15, with relevant textural properties and similar to materials described in the literature [39; 40]  
Analyzing the results of the modification on the dissolution time of P123 for the materials with 3D cubic structure, it could be noted that a remarkable a proportional increase in the specific area occurred as the time increases (KDT4, KIT-6 and KDT-8 samples, respectively). This proportional difference can be explained by the dissolution time of P123, which is necessary for the organic-inorganic phase interactions to occur in a more efficient way, reflecting in the specific area. The data for the mesoporous volume and total volume of the KDT8 sample showed a significant increase when compared to the standard KIT-6, while for the KDT4 sample such values were similar (see Table 2). Such results complement the discussions on the X-ray diffractogram, where it can be determined that the increase on micellar formation positively influences the textural properties of the materials obtained. Both materials had textural properties similar to those found in the literature [5; 41]. Analyzing the data for the KDT2 sample, relative to the unidirectional hexagonal structure of the SBA-15 type, relevant textural properties emphasizing the high mesoporous and microporous volume can be noted. The modification of the type of alcohol promoted some changes in the textural properties of the materials, besides the targeting of the unidirectional hexagonal structure already described in the XRD analysis. This denotes a growing behavior of the specific area and the total and mesoporous volumes when comparing the KMT and KEt samples. However, for the sample synthesized with propanol (KPr sample), it denotes decreasing behavior, corroborating XRD observations and fortifying the idea that the size of the carbonic chain directly interferes on the synthesis mechanism. It is possible to note through these results that the disorder seen in the XRD analysis for the KPr sample can also be observed in the textural properties, which can indicate that this material shows a structure with disorderly channels. However, it should be emphasized that, even if the desired cubic materials were not obtained, the results are quite interesting. Highly organized mesoporous materials of SBA-15 type were obtained, with relevant textural properties and with a reduction of 24 h in synthesis time, when compared to the typical synthesis of these materials [28]. This denotes the quality of the material obtained, when comparing the samples in question with some found in the literature, like those reported by [PERSON] et al. [33] whereby the author synthesized materials of SBA-15 type with pore diameters between 5.8 and 7.5 nm and pore volumes between 0.4 and 0.8 cm\({}^{3}\).g\({}^{-1}\). From the materials obtained through the modification of aging time in the synthesis gel (KAT12, KAT18 and KAT30 samples), it was observed that the variation in time significantly affected the textural properties.