C3H8/CO2催化转化制合成气用催化剂及性能评价

牛宇琪; 刘宁; 代成娜; 徐瑞年; 王宁; 于刚强; 陈标华

doi:10.13205/j.hjgc.202507024

C₃H₈/CO₂催化转化制合成气用催化剂及性能评价

doi: 10.13205/j.hjgc.202507024

北京工业大学环境与生命学部, 北京 100124

基金项目:

国家自然科学基金项目（91534201）

详细信息

作者简介:
牛宇琪（1999—），女，硕士研究生，主要研究方向为环境与能源催化。nyq620408@163.com

通讯作者:
刘宁（1984—），男，副教授，主要研究方向环境与能源催化。liuning@bjut.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2023-10-12
- 录用日期: 2023-12-21
- 修回日期: 2023-11-23
- 网络出版日期: 2025-09-11

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

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

摘要

摘要: 采用H₂小分子原位调控，一步水热合成法制备了低Pt_0.2/M_0.6双金属负载（0.2% Pt， 0.6% M）CeO₂基催化剂［（Pt_0.2/M_0.6@CeO₂， M = Sn， Fe， Cu， Co， Zn， Ni］，用于CO₂/C₃H₈催化重整制合成气（丙烷干重整）研究，考察了H₂压力（0～1.5 MPa）、活性金属组分、配比对其催化性能的影响；筛选出最优性能的催化剂Pt_0.2/Ni_0.6@CeO₂-1H₂（1 MPa H₂）。该催化剂在600 ℃下可实现C₃H₈（26.4%）、CO₂（66.7%）的高效转化（CO选择性为92.5%）；采用XRD、氮气吸附-脱附、ICP、TEM、H₂-TPR及XPS对催化剂的形貌结构、理化特性进行表征，结果表明，H₂小分子可有效增加CeO₂载体氧空位数量，促进Pt、Ni双金属表面分散，增加活性金属位点数量，进而提高催化剂性能；此外，负载金属Pt及Ni之间存在协同效应，Pt可提高Ni与载体间的相互作用，提高Ni的稳定性。
- 气体小分子调控 /
- 丙烷干重整 /
- Pt、Ni金属负载 /
- CeO₂基催化剂
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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