Mesoporous SAPO-5 (MESO-SAPO-5): a potential catalyst for hydroisomerisation of 1-octene

Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-C3N4 Composite for Rhodamine B (RhB) Degradation

“…Moreover, it should be noticed that the peak at 1640 cm −1 came from the unavoidable physical adsorption of O–H [21]. For pure SAPO-5, the corresponding spectrum indicated that peaks at 475 cm −1 , 1115 cm −1 , and 3486 cm −1 were assigned to the benching vibration of primary structural units (like SiO 4 and AlO 4 ), the stretching vibration of Si–O–Si, and the presence of P–OH, respectively [22,23]. It was obvious that during the formation of the SAPO-5/g-C 3 N 4 composites, the component of g-C 3 N 4 was well maintained.…”

Thorough investigation of varying template combinations on SAPO-34 synthesis, catalytic activity and stability in the methanol conversion to light olefin

“…8,9 Different factors affect the acidity and morphology of microporous silicoaluminophosphate. Several studies investigated the effects of silicon and aluminum precursors, 10,11 phosphorus and water contents, 12,13 and silicon amounts [14][15][16][17] on the particle size, morphology and the number of acid sites.…”

Synthesis of Hierarchical SAPO‐5 & SAPO‐34 Materials by Post‐Synthetic Alkali Treatment and Their Enhanced Catalytic Activity in Transesterification

“…As shown in Figure , low angle XRD in the range of 1.5° to 10° 2 θ was performed for SAPO‐5‐5h‐AT and SAPO‐34‐5h‐AT materials. An intense peak was observed at 1.58° 2 θ for SAPO‐5‐5h‐AT, which is typical for mesoporous phase and another prominent peak at 7.5° 2 θ with a small fringe at 7.7° 2 θ was identified in SAPO‐5‐5h‐AT, which is a confirmation of formation of lamellar type of mesoporous phase , . However, SAPO‐5 also shows its first microporous peak at 7.5° 2 θ .…”

“…Second weight loss in the temperature range of 200–400 °C is due to decomposition of some part of TEA (SDA) in SAPO‐5 and TEAOH (SDA) SAPO‐34. The final weight loss after 400 °C is due to decomposition of SDA and TPAOH …”

“…The intrinsic properties of materials can be tailored by surface modification; for example, the acidity of BEA zeolite can be controlled using alkali ion‐exchange treatment, and after modification it showed improved catalytic activity in the production of isobutylene from acetone . Moreover, hierarchical SAPO‐5, SAPO‐34, ZSM‐5, ZSM‐48, MCM‐22, Zn‐SAPO‐34, and H‐β zeolite type of materials were prepared using different alkali treatment through post‐synthesis route and their catalytic performance was found to be better than that of as made zeolites . Verboekend et al reported synthesis of hierarchical silicoaluminophosphate by using different acid and base treatments and their catalytic application in model alkylation reaction of benzyl alcohol with toluene .…”