Physical Grinding of Prefabricated Co 3 O 4 and MCM-22 Zeolite for Fischer-Tropsch Synthesis: Impact of Pretreatment Procedure on the Dispersion and Catalytic Performance

To improve the mess-specific activity of Co supported on zeolite catalysts in Fischer-Tropsch (FT) synthesis, the Co-MCM-22 catalyst was prepared by simply grinding the MCM-22 with nanosized Co O prefabricated by the thermal decomposition of the Co(II)-glycine complex. It is found that this novel st...

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Published inMolecules (Basel, Switzerland) Vol. 29; no. 6
Main Authors Ren, Hua-Ping, Xie, Zhi-Xia, Tian, Shao-Peng, Ding, Si-Yi, Ma, Qiang, Zhao, Yu-Zhen, Zhang, Zhe, Fu, Jiao-Jiao, Hao, Qing-Qing
Format Journal Article
LanguageEnglish
Published Switzerland 14.03.2024
Subjects
Fischer–Tropsch
physical grinding
cobalt
dispersion
MCM-22
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Summary:To improve the mess-specific activity of Co supported on zeolite catalysts in Fischer-Tropsch (FT) synthesis, the Co-MCM-22 catalyst was prepared by simply grinding the MCM-22 with nanosized Co O prefabricated by the thermal decomposition of the Co(II)-glycine complex. It is found that this novel strategy is effective for improving the mess-specific activity of Co catalysts in FT synthesis compared to the impregnation method. Moreover, the ion exchange and calcination sequence of MCM-22 has a significant influence on the dispersion, particle size distribution, and reduction degree of Co. The Co-MCM-22 prepared by the physical grinding of prefabricated Co O and H -type MCM-22 without a further calcination process exhibits a moderate interaction between Co O and MCM-22, which results in the higher reduction degree, higher dispersion, and higher mess-specific activity of Co. Thus, the newly developed method is more controllable and promising for the synthesis of metal-supported catalysts.
ISSN:1420-3049