Preparation of Diacid Comprising Ionic Liquid Catalyst and Its Application in Catalytic Degradation of PET

Preparation of biacidic tin-based ionic liquid catalysts and their application in catalyzing coupling reaction between ethylene carbonate and dimethyl succinate to synthesize poly(ethylene succinate)

“…The chemical shift was δ = 9.12 ppm for the peak of the hydrogen atom attached to the carbon on the imidazole ring. 44 The number of atoms calculated by integration is consistent with the molecular design. It can be tentatively confirmed that tin-based ionic liquid catalysts were prepared successfully.…”

“…Ionic liquids have been widely used in electrochemistry, organic synthesis, catalysis, extraction, and many other fields due to their good solubility, thermal stability, designable structure, and absence of saturated vapor pressure. [34][35][36][37][38][39][40][41][42][43][44][45] Li et al 41 prepared ionic liquid catalyst [BSO 3 HMIM]HSO 4 -Fe 2 (SO 4 ) 3 , realized concerted catalysis between Brønsted acid and Lewis acid, and used it to catalyze the production of biodiesel, with a conversion rate of 95.7%. Therefore, green and stable Brønsted acidic ionic liquids are combined with Lewis acidic metal tin with excellent catalytic performance (which uses relatively safe SnCl 4 Á5H 2 O as the tin source) to design and prepare a tin-based functional ionic liquid catalyst with high stability and catalytic activity.…”

Preparation of a heteropoly acid ionic liquid and its application in the catalytic degradation of bottle-grade PET

“…After the filtrate was refrigerated in a refrigerator for 24 h, the degradation product BHET was separated out by crystallization, filtered, washed with water, and then vacuum-dried at 100 °C and weighed to obtain the product BHET, with the mass recorded as m c . According to the literature, 38 the alcoholysis rate D and the yield of BHET Y B of bottle-grade PET could also be calculated.…”

Energy and Environmental Metrics-Based Comparison of Ionic Liquids/Deep Eutectic Solvents-Assisted Chemical Recycling of Waste Poly(ethylene terephthalate)

“…Wang et al were the first to report the application of ILs for PET depolymerization . Since then, several ILs have been reported in the literature for this purpose. − All of the ILs studied for PET depolymerization have been summarized in Table , along with reaction conditions, PET conversion percentage, BHET yield percentage, and BHET selectivity percentage.…”