The nature of mineralizing agent (HF, NH₄F) and the Si/F ratio in the synthesis conditions is found to affect the formation of Zr- and Cu-containing acid sites on the surface of zirconium-containing hierarchical zeolites (Cu/Zr-MTW) modified by copper (2 wt.%). It is shown that in the conversion of 50 and 80 vol.% ethanol the highest yield of 1,3-butadiene is achieved in the presence of Cu/Zr-MTW (NH₄F, Si/F = 4) catalyst, which is characterized by higher total surface acidity according to TPD-NH₃.

中文翻译：

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分级Cu/Zr-MTW沸石酸碱特性对其乙醇-水混合物制1,3-丁二烯催化性能的影响

发现矿化剂（HF，NH ₄ F）的性质和合成条件中的Si/F比影响含锆分级沸石（Cu/Zr）表面上含Zr和Cu酸性位点的形成。 -MTW) 由铜 (2 wt.%) 改性。_{结果表明，在 Cu/Zr-MTW (NH 4} F, Si/F = 4) 催化剂存在下，在 50 和 80 vol.% 乙醇的转化中，1,3-丁二烯的最高产率是根据TPD-NH ₃ ，其特征在于较高的总表面酸度。