γ-Valerolactone (GVL) as a sustainable platform compound could be converted to renewable fuels and chemicals, whereas directly converting GVL to target products remains still the challenge. In this work, we report an amorphous SiO₂-Al₂O₃ catalyst with adjustable acidity, which presented an excellent selectivity of 97.5 % butene at GVL conversion of 99.5 %, and remained an outstanding stability for 50 h. Appropriate weak and strong acid sites were the key for the ring-opening of GVL. Lower acid sites facilitated the decarboxylation of pentenoic acid (PEA), while higher acid sites promoted the cracking of PEA. Besides, a two-stage integration system was developed for converting GVL to C₅⁺ hydrocarbons via butene intermediate, giving a good yield of 57.6 % C₅⁺ hydrocarbons via combining the SiO₂-Al₂O₃ catalyst with nano-HZSM-5 together.

γ-戊内酯（GVL）作为可持续的平台化合物可以转化为可再生燃料和化学品，而直接将GVL转化为目标产品仍然是挑战。在这项工作中，我们报告了一种具有可调酸度的无定形SiO ₂ -Al ₂ O ₃催化剂，该催化剂在99.5％的GVL转化率下具有97.5％的优良丁烯选择性，并在50小时内保持了出色的稳定性。适当的弱酸和强酸位点是GVL开环的关键。较低的酸位促进戊烯酸（PEA）的脱羧，而较高的酸位促进PEA的裂解。此外，还开发了用于将GVL转换为C ₅ ⁺的两级集成系统通过将SiO ₂ -Al ₂ O ₃催化剂与纳米HZSM-5结合在一起，可通过丁烯中间体形成烃，得到57.6％C ₅ ⁺烃的良好收率。