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Updated: Jul 16, 2026

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Study of the Fischer-Tropsch synthesis on nano-precipitated iron-based catalysts with different particle sizes
Zhonghao Han1, Weixin Qian1, Hongfang Ma1
1Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China zht@ecust.edu.cn +86 21 64252192 +86 21 64252151.
Abstract:
Nano iron-based catalysts with different particle sizes were prepared by a co-precipitated method and characterized by XRD, N2 adsorption, SEM, Mössbauer spectroscopy, XPS, H2-TPR, CO-TPD, H2-TPD and TGA. The CO-TPD results revealed that large particle sizes of catalysts were not conducive to the adsorption of CO, and exhibited low activity of FTS. The decrease of catalyst particle size enhanced the interaction between Fe and Mn, and promoted the CO chemical adsorption and the formation of Fe5C2, but the hydrogenation reaction was inhibited as confirmed by H2-TPD. When the particle size continued to decrease, Mössbauer spectroscopy showed that MnFe2O4 appeared in the catalyst phase, which hindered the reduction of catalysts and the adsorption of feed gas. Overall, the sample FeMnSm-600 showed the highest C[double bond, length as m-dash] 2-4 selectivity of 33% at the highest CO conversion of 79% during the reaction conditions of 300 °C, 1.0 MPa, 12 000 mL (g h)-1, and H2/CO = 2.
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