Hydroisomerization of n-Dodecane over Pt/SAPO-11 Catalyst
ZHANG Xin1, SUN Wuji1, MA Qiqi1, YANG Sangni1, SONG Nianhua1, DENG Ailin1, LIU Xuejun1, HU Jianmin2
1. Zhejiang Province Key Laboratory of Biofuel, School of Chemical Engineer, Zhejiang University of Technology, Hangzhou 310014, China;
2. Zhejiang Jieda Technology Company Limited, Huzhou 313300, China
Abstract：Following the hydrodeoxygenation of oil and grease feedstocks, the subsequent pro-hydrogen isomerization step assumes a pivotal role in the preparation of bio-aviation. A Pt/SAPO-11 catalyst was meticulously synthesized through the impregnation method, involving the loading of Pt onto SAPO-11 molecular sieve. Comprehensive characterization of the physicochemical properties of both the molecular sieve and the catalyst was conducted. Subsequently, the isomerization performance of the catalyst was assessed using a fixed-bed hydrogenation reactor, employing n-dodecane as a model compound. The results showed the temperature as the primary influencing factor on conversion and selectivity. Specifically, as the reaction temperature increased from 350 ℃ to 390 ℃, the conversion of n-dodencane was increased from 18.8% to 86.2%, the selectivity of isododecane was decreased from 99.7% to 67.2%. Under the conditions of 380 ℃, 2 MPa, weight hourly space velocity of 0.45 h-1, and hydrogen-oil volume ratio of 1 500, the conversion of n-dodecane reached 80.5%, and the selectivity of isododecane was 70.1%.
ZHANG Xin,SUN Wuji,MA Qiqi et al. Hydroisomerization of n-Dodecane over Pt/SAPO-11 Catalyst[J]. Chemical Reaction Engineering and Technology, 2024, 40(3): 211-216.
