TY - JOUR
T1 - Isomerization of n-Dodecane for High Selectivity of Multibranched Iso-dodecane over Pt/ZSM-22 - Y Catalyst
AU - Liu, Jia
AU - Yang, Hong
AU - Song, Zhaoyang
AU - Sun, Jing
AU - Guo, Xinwen
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/12/13
Y1 - 2023/12/13
N2 - In this study, Pt/ZSM-22, Pt/Y, Pt/ZSM-22 + Y (the support is a mechanically blended mixture of ZSM-22 and Y at 1:1 weight ratio), and Pt/ZSM-22 - Y (the support is NaOH + CTAB-treated ZSM-22 + Y) with 0.5 wt % of Pt loading were synthesized and applied as catalysts in the hydroisomerization of n-dodecane. The microstructures and acidic properties of these catalysts were characterized by XRD, TEM, BET, N2 adsorption-desorption isotherms, NH3-TPD, Py-IR, and 27Al-NMR. This study revealed significantly different acidic properties and catalytic performances between the mechanically mixed Pt/ZSM-22 + Y and post-treated Pt/ZSM-22 - Y. In particular, Pt/ZSM-22 - Y not only delivers a high n-dodecane conversion but also significantly enhances the yield and selectivity of multibranched iso-dodecane. This enhanced selectivity of multibranched iso-dodecane may be attributed to the high number of medium-strong acid sites and increased mesopores generated by the post-treatment process.
AB - In this study, Pt/ZSM-22, Pt/Y, Pt/ZSM-22 + Y (the support is a mechanically blended mixture of ZSM-22 and Y at 1:1 weight ratio), and Pt/ZSM-22 - Y (the support is NaOH + CTAB-treated ZSM-22 + Y) with 0.5 wt % of Pt loading were synthesized and applied as catalysts in the hydroisomerization of n-dodecane. The microstructures and acidic properties of these catalysts were characterized by XRD, TEM, BET, N2 adsorption-desorption isotherms, NH3-TPD, Py-IR, and 27Al-NMR. This study revealed significantly different acidic properties and catalytic performances between the mechanically mixed Pt/ZSM-22 + Y and post-treated Pt/ZSM-22 - Y. In particular, Pt/ZSM-22 - Y not only delivers a high n-dodecane conversion but also significantly enhances the yield and selectivity of multibranched iso-dodecane. This enhanced selectivity of multibranched iso-dodecane may be attributed to the high number of medium-strong acid sites and increased mesopores generated by the post-treatment process.
UR - http://www.scopus.com/inward/record.url?scp=85180104825&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.3c02836
DO - 10.1021/acs.iecr.3c02836
M3 - Article
AN - SCOPUS:85180104825
SN - 0888-5885
VL - 62
SP - 21112
EP - 21119
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 49
ER -