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Novel Cobalt Catalysts Supported on Metal–Organic Frameworks MIL‐53(Al) for the Fischer–Tropsch Synthesis
Author(s) -
Sun Buli,
Tan Haiyan,
Liu Sixu,
Lyu Shuai,
Zhang Xin,
Zhang Yuhua,
Li Jinlin,
Wang Li
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201800802
Subject(s) - catalysis , fischer–tropsch process , cobalt , x ray photoelectron spectroscopy , materials science , metal organic framework , fourier transform infrared spectroscopy , chemical engineering , thermogravimetry , thermal stability , inorganic chemistry , selectivity , chemistry , organic chemistry , metallurgy , adsorption , engineering
Metal–organic framework of MIL‐53(Al) (Al(OH)‐[O 2 C‐C 6 H 4 ‐CO 2 ]) with exceptional thermal stability (as high as ≈550 °C in dynamic conditions) are synthesized via a solvothermal method, which serve as a porous host matrix of Co‐based catalysts for Fischer–Tropsch synthesis (FTS). MIL‐53(Al) shows large micropores and lattice dynamic flexibility, which make this material a promising support for active cobalt species. The as‐synthesized Co/MIL‐53(Al) catalysts with different cobalt loadings are characterized by powder X‐ray diffraction (XRD), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET), X‐ray photoelectron spectroscopy (XPS), thermogravimetry (TG), Fourier‐transform infrared (FT‐IR) spectroscopy, and temperature programmed reduction. The results show that the immobilization of Co nanoparticles on the MIL‐53(Al) support could be beneficial to obtain novel effective catalysts for FTS. Moreover, compared with the Co/γ‐Al 2 O 3 catalyst of the same cobalt loading, the catalytic performance of Co/MIL‐53(Al) catalyst shows higher FTS activity. Interestingly, the gasoline selectivity over the Co/MIL‐53(Al) catalyst is much higher than that of the Co/γ‐Al 2 O 3 catalyst, close to the optimal value for maximum gasoline and diesel production.