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制备了SO_4~(2-)/ZrO_2固体超强酸,用Hammett指示剂法测得其酸强度的函数H+0≤-14.52。试验表明,固体超强酸催化剂对于由苯乙烯和二甲苯合成PXE(1-苯基-1-二甲苯基乙烷)具有明显的催化活性,其反应产率在70％以上。
The SO_4 ~ (2 -) / ZrO_2 solid superacid was prepared and its acid strength function, H + 0≤-14.52, was measured by Hammett indicator method. The experiments show that the solid superacid catalyst has obvious catalytic activity for the synthesis of PXE (1-phenyl-1-xylenyl ethane) from styrene and xylene, and the reaction yield is over 70%.