Titanium-alumina (Ti-Al₂O₃) composites with Al/Ti 10 ratio were prepared by a sol-gel method. The catalysts were prepared via three different methods such as solution, hydrothermal, and vapour phase using sulfuric acid, thiourea, and dibenzyl polysulfide (DBPS) as precursors, respectively. Ti-Al₂O₃ (10) composite material enhanced the isomerization of glucose to fructose. Sulfidation of catalysts played an important role in catalytic conversion of glucose as well as fructose dehydration. Glucose conversion of >97% with 65% of 5-hydroxymethylfurfural (HMF) was achieved using a superior H-SO₄^2-/Ti-Al₂O₃ (10) catalyst at 170 °C, 200 mg of catalyst, time 4 h, and NaCl-H₂O/THF. Inorganic salt like NaCl had a crucial role in final product separation as well as to control the side reaction. The material recycle capability was examined up to 6th cycles using the superior H-SO₄^2-/Ti-Al₂O₃ (10) catalyst and the activities associated with catalyst physico-chemical properties were analyzed in detail.

采用溶胶-凝胶法制备了Al/Ti 10 比的钛-氧化铝(Ti-Al ₂ O ₃ )复合材料。分别使用硫酸、硫脲和二苄基多硫化物 (DBPS) 作为前体，通过溶液、水热和气相三种不同的方法制备催化剂。Ti-Al ₂ O ₃ (10)复合材料增强了葡萄糖向果糖的异构化。催化剂的硫化在葡萄糖的催化转化和果糖脱水中起着重要作用。使用优质的 H-SO ₄ ^2- /Ti-Al ₂ O ₃实现了 >97% 的葡萄糖转化率和 65% 的 5-羟甲基糠醛 (HMF)(10) 催化剂在 170 °C、200 mg 催化剂、时间 4 h 和 NaCl-H ₂ O/THF。NaCl 等无机盐在最终产品分离和副反应控制中起着至关重要的作用。使用优异的 H-SO ₄ ^2- /Ti-Al ₂ O ₃ (10) 催化剂对材料回收能力进行了检查，直至第 6 次循环，并详细分析了与催化剂理化性质相关的活性。