Hydro-isomerization of n-dodecane on Pt–La/Beta catalyst for the production of high quality bio-jet fuel: Effect of La addition

A series of Pt–La/B38 catalysts were prepared for low-temperature isomerization of n-dodecane and the effects of La addition on the textural properties, metal dispersion, acid properties, and catalytic performance were investigated. La co-impregnated with Pt on B38 significantly reduced the Pt size and notably enhanced the uniformity in Pt size. A higher ratio of accessible Pt and medium-strength Brønsted acid sites and a shorter distance between two Pt particles of Pt–La10/B38 resulted in the maximum iso-C12 yield (59.2–56.2%) in the range of 200–250 °C, due to the reasonable arrangement of active sites caused by La loading. [Display omitted] •Pt–La/HBeta (Si/Al = 38) for low-temperature hydro-isomerization of n-dodecane.•La inhibits agglomeration of Pt and facilitates uniform nano-size Pt dispersion.•Reasonable arrangement of active metal and acid sites caused by La addition.•Pt–La10/HB showed maximum iso-C12 yield of 59.2–56.2% in a range of 200–250 °C.