Research on butene oligomerization reaction over the hemicellulose modified HZSM-5

The HZSM-5 synthesized with modifying by different contents of hemicellulose.The morphology, texture and acidity were characterized with XRD, SEM, N₂ adsorption-desorption, NH₃-TPD and Py-FTIR. Butene oligomerization over the modified HZSM-5 was tested. The results indicate that the HZSM-5 with the 1.6% hemicellulose exhibits the best activity and stability on the butene oligomerization reaction, the conversion can maintain about 80% after 140 h on stream, with the highest selectivities of the trimer, tetramer and diesel component in the products. These may be related with its high BET surface and mesoporous volume, and the strongest acidity.