Citation:
GONG Cheng-Bin, ZENG Ren-Quan, FU Xiang-Kai, LI Long-Qin, CHEN Jing-Rong. Study on Solid Base Supported on Zirconium Dimethyl Aminoethylphosphonate-phosphate[J]. Chinese Journal of Applied Chemistry,
;2000, 17(3): 264-267.
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Some solid bases Zr(HPO4)2-x [O3PCH2CH2N(CH3)2]x·H2O-NaOH were prepared by treating zirconium dimethylaminoethyl phosphonate-phosphate supporter with 5% NaOH solution and characterized by elemental analysis, IR, TG DTG, DTA and BET surface area measurements. The base strengths of the solid bases were of 9.3~15.0, which corresponded to that of solid sodium carbonate. Their base numbers were measured by benzoic acid titration method to be in dependence with x value. The influences of the x value, temperature keeping time in the preparation of the supporter were studied. The solid bases showed high catalytic activity in typical Knoevenagel condensation reaction in high product yields and little side reactions. The solid base catalysts can be reused for 6 to 7 times and easily regenerated.
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