## 2 Materials and Methods  
Synthetic procedures: The reagents used in the synthesis were tetraethylorthosilicate (TEOS, 98%, Sigma-Aldrich, St. Louis, MO, USA), aluminum hydroxide (62.23%, Synth, Diadema, SP, Brazil, Al(OH)3,), 2-ethyl-1,3,4-methylimidazol hydroxide (2E134 TMIOH, synthesized), hydrofluoric acid (40%, Sigma-Aldrich, St. Louis, MO, USA), and distilled water. The cation 2E134 TMIOH was synthesized according to the procedure described by [PERSON] et al. [4]. The synthesis of HPM-1 incorporating aluminum was a variation of the pure silica procedure, and was adapted by the process, reported by [PERSON] et al. [16], to incorporate Al into the lamellar silicate magaadite. In this way, the cation 2E134 TMIOH was concentrated up to 1 g/L. Subsequently, TEOS was added to the concentrated cation solution and was left to hydrolyze until the desired 33H2O/SiO2 ratio was reached (due to the ethanol and water evaporation). This procedure was followed according to  
Figure 1: Representation of the STW topology obtained thanks to the.cif from the IZA Database website (with permission from Reference [9], copyright © 2018 Structure Commission of the International Zeolite Association (IZA-SC) [9]) using the Mercury program [10]. the weight changes, that is, the weight lost was considered to be ethanol and water evaporation. Once the desired SiO\({}_{2}\)/2E134 TMIOH/H\({}_{2}\)O composition was reached, HF was added and mixed manually for approximately 10-15 min. The gel composition at this point of synthesis was SiO\({}_{2}\): x Al\({}_{2}\)O\({}_{3}\): 0.5 SDAOH: 0.5 HF: 4.7 H\({}_{2}\)O, where x = 0 (as no aluminum was added yet). Then, the synthesis gel was divided among several Teflon autoclaves that were placed within their respective steel autoclaves. These autoclaves were placed into a rotatory oven at 175 \({}^{\circ}\)C for 3 days. At this time, some of the autoclaves were cooled, and the amount of SiO\({}_{2}\) per autoclave was calculated, according to the amount that the synthesis gel weighed. Using the amount of silica per autoclave as a reference, it was possible to calculate the amount of Al(OH)\({}_{3}\) needed per autoclave. Further, Al(OH)\({}_{3}\) was added to attain the desired compositions (x = 0.015, 0.025, and 0.035). After this, the autoclaves were placed in rotation again at 175 \({}^{\circ}\)C for 1 more day. The products were then filtered under a vacuum and washed with an abundance of distilled water. The pH of the initial gel, at the time of aluminum introduction, was 7, and the pH at the end of the synthesis was 8, but it decreased again to 7 when the product was washed. Finally, the samples were calcined at 550 \({}^{\circ}\)C for 6 h. This process is summarized in Figure S1 (Supplementary Material). Characterization: The samples were analyzed by XRD (Bruker D2-Phase, Bruker, Billerica, MA, USA, with a Lynxeye detector and Cu radiation, using a divergent slit of 0.6 mm, a central slit of 1 mm, a measuring step of 0.004\({}^{\circ}\), and an acquisition time of 0.5 s) to identify the compounds and their crystalline structure. Calibration of the instrument was performed using a National Institute of Standards and Technology (NIST) corundum standard for every measurement in order to ensure that all the samples were comparable. The samples were also analyzed by X-ray fluorescence (XRF, EDX-720/800 HS, Shimadzu, Kioto, Japan) to calculate the total Si/Al ratio (including Al\({}_{\rm{TETRA}}\) and Al\({}_{\rm{OCTA}}\)). Magic-angle spinning solid-state nuclear magnetic spectroscopy (MAS NMR) was used to calculate the actual Si/Al\({}_{\rm{TETRA}}\) ratio of the framework and the Al\({}_{\rm{TETRA}}\)/Al\({}_{\rm{OCTA}}\) ratio of the samples. The \({}^{29}\)Si and \({}^{27}\)Al MAS NMR spectra were recorded using a Bruker AVIII HD 600 NMR spectrometer (Bruker, Billerica, MA, USA) (with a field strength of 14.1 T) at 156.4 MHz with a 2.5 mm triple-resonance DVT probe that used zirconia rotors at the spinning rates of 15 kHz (\({}^{29}\)Si) and 20 kHz (\({}^{27}\)Al).