加氢脱氧
催化作用
化学
选择性
化学吸附
吸附
吡啶
双金属片
介孔材料
无机化学
核化学
有机化学
作者
Kihoon Kim,Daisuke Higai,Xiaofan Hou,Mingming Peng,Eika W. Qian
标识
DOI:10.1021/acs.iecr.0c05922
摘要
Two series of supports, SAPO-11 (Si/Al: 0–0.4) and alumina-coated SBA-15 (Al2O3: 0–20 wt %), with different pore structures were synthesized. Subsequently, the PtSn bimetallic catalysts supported on these supports were prepared using a co-impregnation method and were characterized by N2 adsorption measurement, pyridine-adsorbed Fourier transform infrared, CO chemisorption, and H2-TPR. The catalytic performances of the catalysts in the hydrotreatment of palm fatty acid distillate (PFAD) were tested using a fixed-bed flow reactor system. PtSn/ALPO-11 (Si/Al: 0) showed the highest n-C16,18 selectivity (66.4%) among the SAPO-11-based catalysts, and PtSn/20Al/SBA-15 (20% Al2O3) showed the highest n-C16, n-C18 selectivity (61.5%) among the SBA-15-based catalysts. It was found that higher Brønsted acid content on the catalyst showed higher isomerization selectivity. Based on the comparison of PtSn/SAPO-11 (0.1) and PtSn/10Al/SBA-15, the mesoporous structure favored hydrodeoxygenation activity. Also, it was suggested that Brønsted acid affected the structure of active sites and highly dispersed Pt favored formation of n-hexadecane and n-octadecane.
科研通智能强力驱动
Strongly Powered by AbleSci AI