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VO(acac)_2类化合物是典型的均相催化剂,它常作为活性组分载在固体表面,研究其在载体表面的配位结构是一重要的课题。VO~(2+)配合物的ESR研究已有报道。本文报道用ESR方法研究VO(acac)_2在Y型沸石上固载化作用的实验结果。并用电子计算机进行了模拟。讨论了不同固载化过程中VO~(2+)的可能配位结构。实验样品制备分别取VOSO_4水合物四份(VOSO_4·xH_2O,含水12.7％美国Alfa进口试剂)0.500,2.782,1.393,0.984g,前三份用5g NaY,第四份用4g HY,加水至25mL,搅拌10h
VO (acac) _2 is a typical homogeneous catalyst, which is often used as an active component on a solid surface. Studying its coordination structure on the surface of the support is an important issue. ESR studies of VO ~ (2+) complexes have been reported. In this paper, ESR method was used to study the experimental results of the immobilization of VO (acac) _2 on Y zeolite. And simulated with a computer. The possible coordination structures of VO ~ (2+) during different immobilization processes are discussed. Experimental samples were prepared to take VOSO_4 hydrate four (VOSO_4 · xH_2O, aqueous 12.7% Alfa import reagent) 0.500,2.782,1.393,0.984g, the first three with 5g NaY, the fourth with 4g HY, add water to 25mL, Stir for 10h