The catalytic conversion of cellulose to levoglucosenone (LGO) was studied using dilute sulfuric acid and propylsulfonic acid functionalized SBA-15 (PS-SBA-15) in tetrahydrofuran (THF). We show that the addition of small amounts of a liquid acid catalyst such as sulfuric acid complements the use of a solid acid catalyst for the conversion of cellulose. Sulfuric acid promotes the depolymerization of cellulose into levoglucosan (LGA). The main role of the solid Brønsted acid catalyst is to dehydrate the LGA into LGO. The addition of low concentrations of H₂SO₄ to PS-SBA-15 resulted in an increase in LGO yield of up to 37% (from 18% obtained using an equivalent amount of H₂SO₄ only). Our approach provides a novel alternative for a more environmentally friendly production of LGO.

在四氢呋喃 (THF) 中使用稀硫酸和丙磺酸官能化的 SBA-15 (PS-SBA-15) 研究了纤维素向左旋葡萄糖酮 (LGO) 的催化转化。我们表明，添加少量液体酸催化剂如硫酸补充了固体酸催化剂用于纤维素转化的使用。硫酸促进纤维素解聚成左旋葡聚糖 (LGA)。固体布朗斯台德酸催化剂的主要作用是将 LGA 脱水成 LGO。向 PS-SBA-15添加低浓度 H ₂ SO ₄导致 LGO 产率增加高达 37%（从使用等量 H ₂ SO ₄获得的 18%只要）。我们的方法为更环保的 LGO 生产提供了一种新的替代方案。