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Kinetic study of the hydrogenation of a monoterpene over spent FCC catalyst‐supported nickel
Author(s) -
Wang Linlin,
Guo Huiqing,
Chen Xiaopeng,
Huang Yingying,
Ren Lu,
Ding Shengfang
Publication year - 2015
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22277
Subject(s) - catalysis , nickel , chemistry , kinetics , monoterpene , kinetic energy , metal , organic chemistry , nuclear chemistry , quantum mechanics , physics
A feasible route toward the sustainable synthesis of chemicals was provided via the transformation of monoterpene pinenes into pinane. This article discusses the conversion of pinenes to pinane over spent fluid catalytic cracking catalyst (SFCCC)‐supported nickel (Ni/SFCCC) at 110–130 °C and 2–6 MPa. The Ni/SFCCC catalyst was characterized by BET, XRD, SEM‐EDS, ICP, and FTIR. These measurements revealed that not only did the noble metal‐free catalyst Ni/SFCCC enhance the hydrogenation of pinenes to pinane, but a high cis‐trans ratio was also obtained: the conversion of pinenes and the cis‐trans ratio reached 98.48 % and 13.89, respectively. By fitting the kinetic data via the power‐law model, the hydrogenation of pinenes followed first‐order reaction kinetics, with the apparent activation energies for the hydrogenation of pinenes to cis‐ and trans‐pinane being 59.42 kJ/mol and 98.38 kJ/mol, respectively. The kinetic models described the formation of cis‐ and trans‐pinane well, with satisfactory accuracy compared to experimental observations. Furthermore, the reaction mechanism was derived via the Langmuir–Hinshelwood (L‐H) approach.