Mesoporous aluminum-promoted sulfated zirconia (named as mAl-SZ) was directly prepared by grind method, and firstly used to catalyze the solvent-free dehydration of sorbitol to isosorbide. The physicochemical properties of as-prepared catalysts were characterized by FT-IR, TGA, XRD, N₂ sorption, NH₃-TPD and pyridine-infrared (IR) spectroscopy techniques in order to elucidate the relevance of the catalyst properties and the catalytic performance. It was found that the catalysts prepared by grind method possessed mesoporous structures with high surface area, pure tetragonal phase as well as high sulfur contents, which were advantage to eliminate diffusion limitation and generate abundant acidic sites, especially Brönsted acidic sites. Furthermore, aluminum promoters could contribute to the considerable increase of the strong acidic sites and ratio of Brönsted to Lewis acidic sites. Consequently, the mesoporous sulfated zirconia with 6 mol% Al-promoter (6Al-SZ) attained porous structure with improved acidic properties, thus showing the optimal catalytic behavior. The full sorbitol conversion with 73% isosorbide selectivity was achieved under milder conditions (175 °C, 2 h) than those of similar type of catalysts. In addition, the 6Al-SZ exhibited favorable reusability with insignificant drop in isosorbide yield during five reaction cycles.

采用研磨法直接制备了介孔铝助硫酸盐氧化锆（简称mAl-SZ），首先用于催化无溶剂脱水的山梨糖醇脱水成异山梨醇。通过FT-IR，TGA，XRD，N ₂吸附，NH ₃表征了所制备催化剂的理化性质。-TPD和吡啶红外（IR）光谱技术，以阐明催化剂性能和催化性能的相关性。结果表明，采用粉碎法制备的催化剂具有介孔结构，具有较高的比表面积，纯的四方相和较高的硫含量，有利于消除扩散限制并产生丰富的酸性位，特别是布朗斯台德酸性位。此外，铝助催化剂可以大大增加强酸性位点以及布朗斯台德与路易斯酸性位点的比例。因此，具有6mol％的铝促进剂（6Al-SZ）的中孔硫酸化氧化锆获得了具有改善的酸性的多孔结构，从而显示了最佳的催化性能。与类似类型的催化剂相比，在温和的条件下（175°C，2 h）可实现具有73％异山梨醇选择性的完全山梨醇转化率。另外，在五个反应周期中，6Al-SZ表现出良好的可重复使用性，异山梨醇收率无明显下降。