Catalysts for C3H8/CO2 catalytic conversion to syngas and their performance evaluation

NIU Yuqi; LIU Ning; DAI Chengna; XU Ruinian; WANG Ning; YU Gangqiang; CHEN Biaohua

doi:10.13205/j.hjgc.202507024

Volume 43 Issue 7

Jul. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(7): 220-231

NIU Yuqi, LIU Ning, DAI Chengna, XU Ruinian, WANG Ning, YU Gangqiang, CHEN Biaohua. Catalysts for C3H8/CO2 catalytic conversion to syngas and their performance evaluation[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(7): 220-231. doi: 10.13205/j.hjgc.202507024

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NIU Yuqi, LIU Ning, DAI Chengna, XU Ruinian, WANG Ning, YU Gangqiang, CHEN Biaohua. Catalysts for C₃H₈/CO₂ catalytic conversion to syngas and their performance evaluation[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(7): 220-231. doi: 10.13205/j.hjgc.202507024

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Catalysts for C₃H₈/CO₂ catalytic conversion to syngas and their performance evaluation

doi: 10.13205/j.hjgc.202507024

Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China

Received Date: 2023-10-12
Accepted Date: 2023-12-21
Rev Recd Date: 2023-11-23

Available Online: 2025-09-11

Abstract

Abstract

In present work， based on the H₂-small-molecule in situ directing strategy， a series of ultra-low Pt_0.2/M_0.6 bimetallic supported （0.2% Pt， 0.6% M） CeO₂-based catalysts ［（Pt_0.2/M_0.6@CeO₂， M = Sn， Fe， Cu， Co， Zn， Ni］ were prepared by one-step hydrothermal synthesis approach and investigated for the CO₂ oxidation of C₃H₈ to synthesis gas （propane dry reforming， PDR）. The effects of H₂ pressure （0~1.5 MPa）， active metal composition， and ratio on the catalytic performance were systematically investigated. The optimal catalyst， Pt_0.2/Ni_0.6@CeO₂-1H₂ （1 MPa H₂）， was selected， achieving efficient conversions of C₃H₈ （29.9%） and CO₂ （73.9%） at 600 ℃， with a CO selectivity of 92.5%. XRD， nitrogen adsorption-desorption， ICP， TEM， H₂-TPR， and XPS were further used to characterize the structure morphology and physicochemical properties of the catalysts. The results showed that the H₂-small-molecule could effectively increase the number of oxygen vacancies in the CeO₂ carrier， promote the surface dispersion of Pt and Ni， increase the number of active metal sites， and ultimately improve the related catalytic performance. In addition， there is a synergistic effect between the loaded metal Pt and Ni， where Pt enhances the interaction between Ni and the carrier， thereby improving the stability of Ni.
- gas small-molecule regulation,
- propane dry reforming （PDR）,
- Pt and Ni bimetallic supported,
- CeO₂-based catalyst

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