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183. Maheria KC, Kozinski J, Dalai A (2013) Esterification of levulinic acid to n-butyl levulinate over various acidic zeolites. Catal Lett 143:1220–1225. https://doi.org/10.1007/
s10562- 013- 1041- 3
184. Nandiwale KY, Sonar SK, Niphadkar PS et al (2013) Catalytic upgrading of renewable levulinic acid to ethyl levulinate biodiesel using dodecatungstophosphoric acid supported on
desilicated H-ZSM-5 as catalyst. Elsevier B.V., Amsterdam
185. Joshi SS, Zodge AD, Pandare KV, Kulkarni BD (2014) Efficient conversion of cellulose to
levulinic acid by hydrothermal treatment using zirconium dioxide as a recyclable solid acid
catalyst. Ind Eng Chem Res 53:18796–18805. https://doi.org/10.1021/ie5011838
186. Wang J, Jaenicke S, Chuah GK (2014) Zirconium-beta zeolite as a robust catalyst for the
transformation of levulinic acid to γ-valerolactone via Meerwein-Ponndorf-Verley reduction.
RSC Adv 4:13481–13489. https://doi.org/10.1039/c4ra01120a
187. Holm MS, Taarning E, Egeblad K, Christensen CH (2011) Catalysis with hierarchical zeolites. Catal Today 168:3–16. https://doi.org/10.1016/j.cattod.2011.01.007
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