Isaac Scientific Publishing

Modern Organic Chemistry Research

MOCR > Volume 5, Issue 1, August 2020

The Effect of SiO2/Al2O3 Ratio on Hydroisomerization Reaction Performance of Pd/SAPO-31 Catalysts

Download PDF (1001.5 KB) PP. 1 - 9 Pub. Date: August 8, 2020

DOI: 10.22606/mocr.2020.51001

Author(s)

  • Yungang Jia*
    Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
  • Tiezhen Zhang
    Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
  • Famin Sun
    Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
  • Wei Wu
    Heilongjiang University, Harbin 150080, China

Abstract

SAPO-31 molecular sieves with various (SiO2)/(Al2O3) ratio were synthesized using di-n-butylamine (DBA) as the template. The samples were well characterized by XRD, N2 sorption-desorption, SEM, NH3-TPD and Py-IR. The results showed that the sample had good crystallinity (SiO2/Al2O3 ratio of 0.6). Isomerization of deoxidized vegetable oil is carried in a fixed-bed reactor with 100ml catalyst at 2.0MPa, 350°C, WHSV 1.5, hydrogen-oil ratio 500:1. The highest biodiesel yield of 92.2wt% was obtained over the Pd/SAPO-31(0.6) catalyst with solidifying point 0°C, flash point 60°C and cetane number 74. Catalyst had no loss of activity and shows high stability and excellent hydroisomerization performance.

Keywords

SAPO-31, biodiesel, hydroisomerization dewaxing, SiO2/Al2O3 ratio, Pd

References

[1] Le Luo, Hao Zhou, “Restrictive Factors and Countermeasure Analysis on Development of Biodiesel Industry in China,” Modern Industrial Economy and Informationization, No.2 (total of 134), pp. 14-27, 2017.

[2] Ruili LI, Siyuan YANG, Ying LIU, “Isomerization to improve the low temperature fluidity of biodiesel from jatropha oil, ” CHEMICAL INDUSTRY AND ENGINEERING PROGRESS, Vol. 31, No. 4, pp. 813-843. 2012.

[3] Xiao-meng WEI, Wei WU, Xue-Feng BAI, “The Progress in Research on the Hydroisomerization of n-Alkanes,” CHEMISTRY AND ADHESION, Vol. 40, No. 2, pp. 128-133, 2018.

[4] Xiaoning Tian, Zhongqing Jiang, Yingying Jiang, “Sulfonic acid-functionalized mesoporous carbon/silica as efficient catalyst for dehydration of fructose into 5-hydroxymethylfurfural,” RSC Advances, No.6, pp. 101526-101534, 2016.