10303-53-4Relevant articles and documents
A highly active and stable organic-inorganic combined solid acid for the transesterification of glycerol under mild conditions
Hou, Zhaoyin,Jiang, Yuanyuan,Long, Yihua,Wang, Zhengbao,Ye, Boyong,Zhao, Huaiyuan,Zhou, Ruru
, p. 1772 - 1781 (2021/06/28)
Solid acid catalyst plays a crucial role in the petroleum refinery industry and bio-refinery technology. In this work, p-phenolsulfonic acid (PSA) was successfully grafted onto the surface of KH560-modified zirconium phosphate (K-ZrP) in a facile routine. The structure and property of this organic-inorganic combined solid acid PSA/K-ZrP-x were characterized via XRD, FTIR, 13C solid-state NMR, TG, N2 adsorption-desorption, SEM, pyridine-adsorption FTIR and XPS technologies. The characterization results showed that KH560 can bond with ZrP and promote the grafting of PSA on the surface of K-ZrP via the condensation reaction between its epoxy ring and the phenolic hydroxyl group in PSA. Consequently, PSA/K-ZrP-2 exhibited excellent performance and stability in the transesterification between glycerol and methyl acetate among the tested H3PW12O40, Amberlyst-45, HBEA, HZSM-5, ZrP, AlCl3 and FeCl3 catalysts. The calculated conversion of glycerol reached 81.3% with a 97.9% selectivity for monoacetin (MAG) and diacetin (DAG) with a 2.2% dosage of [H+] at 100 °C for 4 h. The highest specific activity of PSA/K-ZrP-2 reached 24028.2 mg-glycerol/g-cat/h in a short reaction time (at 0.17 h), and it could be recycled five times without obvious deactivation.
NONAQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM BATTERY, LITHIUM BATTERY USING SAME, AND FORMYLOXY GROUP-CONTAINING COMPOUND USED THEREIN
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, (2011/08/06)
Disclosed are a nonaqueous electrolytic solution for lithium secondary battery comprising an electrolyte dissolved in a nonaqueous solvent and containing at least one compound represented by the formula (I) in an amount of from 0.01 to 10% by mass of the nonaqueous electrolytic solution; a lithium battery containing the electrolytic solution and excellent in low-temperature and high-temperature cycle property; and a formyloxy group-containing compound having a specific structure which is used in lithium batteries, etc. (wherein X represents an alkylene group, an alkenylene group or an alkynylene group; R1 represents H, an alkyl group, a cycloalkyl group or a group of the formula (II); R2 represents an alkyl group, a cycloalkyl group or a group of the formula (II); R3 to R7 each represent H, F, a methoxy group or an ethoxy group.)