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[Display omitted] • Mesoporous polymer ionic liquids for the immobilization of lipase demonstrated mesoporous properties. • Resultant systems were used as recyclable biocatalysts for ester production. • Lipase immobilization led to higher stability than that of the free enzyme. • The process can generate high-purity esters using lipase-immobilized mesoporous polymer ionic liquid. Herein, fatty acid esters were synthesized cost-effectively from various fatty acids using reusable lipase (L) immobilized with novel porous ionic polymer (PIP) (l –PIP). The functionalized mesoporous PIP was synthesized through Friedel–Crafts alkylation reaction of 1, 4-bis(bromomethyl) benzene in the presence of ferric chloride as catalyst, and lipase was completely immobilized with PIP at varied time, forming l –PIP–6 H , l –PIP–12 H , l –PIP–18 H , l –PIP–24 H , l –PIP–30 H , and l –PIP–36 H , which were applied in ester production. l –PIP–30 H was characterized using FT–IR, SEM, XPS, solid–state 13C NMR, and N 2 adsorption–desorption isotherms. The conversion of oleic acid reached 88.21 % under optimized conditions (12:1 ethanol/oleic acid molar ratio after 5 h at 45 °C with 250 wt% catalyst at 300 rpm). The stability and reusability of l –PIP–30 H were demonstrated by the sustained catalytic efficiency for at least six reaction cycles. Good catalytic activity during the esterification of various free fatty acids with ethanol was observed. This cost–efficient and effective lipase–immobilized PIP catalyst may have positive economic and environmental repercussions to inspire further academic and industrial research on biodiesel. [ABSTRACT FROM AUTHOR]

A coordination polymeric crystal 1 was successfully synthesized from H 4 L (5,5′-(1,4-phenylenebis (methoxy))diisophthalic acid), bidpe (4,4′-bis(lmidazolyl)diphenyl ether), and Zn(NO 3) 2 ·6H 2 O under solvothermal conditions, and characterized by single-crystal X-ray diffraction. Then, two new crystals 1 Fe and 1 Cu were obtained with metal ion exchange when 1 was dipped into the DMF solution for FeCl 2 and CuCl 2 , respectively. The exchange process demonstrated that the high valence metal ion with strong acidity could be destroyed the structure of the crystals. Therefore, it should be exchanged with lower valence ion and then oxidized to the high valence state, which could be a feasible way to obtain the crystals with high valence metal ions. Further, the magnetic property and the synergistic CO 2 conversion with epoxide for 1 Fe and 1 Cu were also investigated, and the results shown that 1 Fe could be regarded as a potential catalyst for this conversion. Three two dimensional two-fold interpenetrated MOFs 1 , 1 Fe and 1 Cu were successfully synthesized via solvothermal or post-synthetic modification. 1 Fe and 1 Cu shown excellent abilities for catalyzed cycloaddition of CO 2 to epoxides. [Display omitted] 1. Three novel dimensional MOFs 1 , 1 Fe and 1 Cu , have been synthesized via solvent-thermal treatment and post-synthetic exchange approach. 2. Zn(II) ions were exchange with Fe(III) ions in 1 Fe. But, due to the strong acidity of Fe(III) ions could destroy the crystal framework, the exchange only could be happen when 1 was dipped into the freshly FeCl 2 -DMF solution. 3. Variable-temperature magnetic studies indicate that 1 Fe contains the weak ferromagnetic chain while 1 Cu contains the weak antiferromagnetic (AF) interactions. 4. The catalytic properties of 1 , 1 Fe and 1 Cu for epoxides' cycloaddition reactions with CO 2 , and the results shown that 1 Fe and 1 Cu could be good catalysts for this reaction. [ABSTRACT FROM AUTHOR]