Details

Autor(en) / Beteiligte

• Chen, Qinyuan
• Qian, Weixin
• Zhang, Haitao
• Ma, Hongfang
• Sun, Qiwen
• Ying, Weiyong

Titel

Effect of Li promoter on FeMn/CNTs for light olefins from syngas

Ist Teil von

• Catalysis communications, 2019-05, Vol.124, p.92-96

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• FeMnLi/CNTs catalysts with different Li content were prepared by the incipient wetness impregnation method for light olefins from syngas and investigated by N2 adsorption-desorption, XRD, H2-TPR, CO2-TPD and Mӧssbauer techniques. The addition of Li increased the surface basicity of catalysts and promoted the transformation of Fe3+ specious and formation of active phase, χ-Fe5C2, which was favorable to CO conversion and light olefins selectivity. The best catalytic performance was achieved over 8Fe8Mn1.5Li catalyst with CO conversion of 14.18% and light olefins selectivity of 48.42%. [Display omitted] •Li promoter suppressed the reducibility of catalysts.•With the addition of Li the surface basicity of catalysts ascended.•Moderate amount of Li could promote the formation of χ-Fe5C2.•The increase of surface basicity and χ-Fe5C2 were favorable to FTS performance.