Biochemical and Biomolecular Engineering Commons^™

Catalytic Fast Pyrolysis Of Kraft Lignin Over Hierarchical Hzsm-5 And Hβ Zeolites, Yadong Bi, Xiaojuan Lei, Guihua Xu, Hui Chen, Jianli Hu

Faculty & Staff Scholarship

The hierarchical HZSM-5 and Hβ zeolites were prepared by alkaline post-treatment methods adopting Na2CO3, TMAOH/NaOH mixture, and NaOH as desilication sources, respectively. More mesopores are produced over two kinds of zeolites, while the micropores portion is well preserved. The mesopores formed in hierarchical Hβ zeolites were directly related to the basicity of the alkaline solution, indicating that Hβ zeolite is more sensitive to the alkaline post-treatment. The hierarchical HZSM-5 and Hβ zeolites are more active than the parent one for catalytic fast pyrolysis (CFP) of Kraft lignin. Hierarchical zeolites retained the function of acid catalysis, while additionally creating larger mesopores …