LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Effects of metal promoters on one-step Pt/SAPO-11 catalytic hydrotreatment of castor oil to C8-C16 alkanes

Photo by primal_harmony from unsplash

Abstract a series of Pt/SAPO-11 catalysts were synthesized by using incipient wetness impregnation method with SAPO-11 molecular sieve as the carrier and the active mental component Pt. The properties of… Click to show full abstract

Abstract a series of Pt/SAPO-11 catalysts were synthesized by using incipient wetness impregnation method with SAPO-11 molecular sieve as the carrier and the active mental component Pt. The properties of the catalysts were changed by adding different metals: La, Ce, Sn, Fe, Co, Ni, Cu and Zn. Using castor oil as the model molecular probe, a one-step continuous catalyzed hydrogenation preparation of bio-aviation kerosene was carried out in a high pressure micro fixed-bed reactor. The effects of bimetallic multifunctional catalysts with an auxiliary metal agent on hydrodeoxygenation performance, the selectivity of C8-C16 alkanes, the selectivity of C8-C16 iso-alkanes and the selectivity of C8-C16 arene were evaluated systematically. Three catalysts with good comprehensive performances, namely, Pt-La/SAPO-11, Pt-Ce/SAPO-11, Pt-Co/SAPO-11, were selected for characterization with XRF, XRD, BET, TEM, H2-TPR, NH3-TPD and Py-IR. The relationship between macroscopic catalytic properties and micro structure of the selected catalysts was discussed. It was found that the addition of La, Ce and Co reduced the specific surface area, pore volume and average pore diameter of SAPO-11 molecular sieve carrier, but increased the acid sites and total acid sites of the carrier, decreased the crystalline size of the active component Pt and promoted the interaction between Pt and the carrier. The Pt-La/SAPO-11 catalyst was the best catalyst because of its high selectivity of C8-C16 alkanes and C8-C16 iso-alkanes.

Keywords: selectivity c16; castor oil; carrier; one step; c16 alkanes; c16

Journal Title: Industrial Crops and Products
Year Published: 2020

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.