ZSM-5/γ-Al₂O₃ composites are synthesized using multiwall carbon nanotubes as a pore-forming agent. The as-prepared composites are characterized by nitrogen adsorption, X-ray diffraction, X-ray fluorescence, TEM, SEM, FT-IR spectroscopy, and pyridine adsorption. The as-prepared composites exhibit significantly different physicochemical properties depending on the synthesis technique. The catalytic activity of the as-prepared composites toward methanol dehydration to dimethyl ether is investigated. The as-prepared composites demonstrate the methanol conversion close to the equilibrium one with 100% selectivity toward dimethyl ether. The kinetic parameters of the process are measured highlighting the effect of the textural and acidic properties of the composites on their catalytic performance.

中文翻译：

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ZSM-5/γ-Al2O3 甲醇脱水催化剂：通过碳纳米管作为成孔剂调节孔结构

以多壁碳纳米管为造孔剂合成了ZSM-5/ γ -Al ₂ O _{3复合材料。}通过氮吸附、X射线衍射、X射线荧光、TEM、SEM、FT-IR光谱和吡啶吸附对所制备的复合材料进行了表征。根据合成技术的不同，所制备的复合材料表现出显着不同的物理化学性质。研究了所制备的复合材料对甲醇脱水生成二甲醚的催化活性。所制备的复合材料表明甲醇转化率接近平衡转化率，对二甲醚的选择性为 100%。测量该过程的动力学参数，突出显示复合材料的结构和酸性特性对其催化性能的影响。