Effects of <italic style="font-style: italic">n</italic>(Pd)/<italic style="font-style: italic">n</italic>(Pt) on performances of Pd-Pt/Al<sub>2</sub>O<sub>3</sub> catalysts for methane catalytic combustion

LIU Sai; WANG Xiaobo; ZHANG Yunfeng; CHENG Juntao; WANG Ruolei; ZHANG Xin; QIAO Zengjian; MENG Wenjun; WANG Hu; LIU Anxiu; JI Hongguang

doi:10.12434/j.issn.2097-2547.20250488

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Effects of n(Pd)/n(Pt) on performances of Pd-Pt/Al₂O₃ catalysts for methane catalytic combustion

更新时间：2026-06-18

- Effects of n(Pd)/n(Pt) on performances of Pd-Pt/Al₂O₃ catalysts for methane catalytic combustion
- Pages: 1-8(2026)
- 作者机构：
  
  1.国能国源电力（北京）有限公司，北京 100033
  2.太原理工大学安全与应急管理工程学院，山西太原 030024
  3.山西鲁能河曲电煤开发有限责任公司上榆泉煤矿，山西忻州 036500
  4.国源电力（神东电力）公司技术支持中心，陕西西安 710000
  5.山西省国有资本运营有限公司，山西太原 030006
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250488
  CLC： TQ426;O643.36
- Received：23 December 2025，
  
  Revised：2026-04-01，
  
  Online First：16 June 2026，
- 稿件说明：
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刘赛,王晓波,张云峰等.n(Pd)/n(Pt)对Pd-Pt/Al₂O₃催化甲烷燃烧性能的影响[J].低碳化学与化工,DOI:10.12434/j.issn.2097-2547.20250488.

LIU Sai,WANG Xiaobo,ZHANG Yunfeng,et al.Effects of n(Pd)/n(Pt) on performances of Pd-Pt/Al₂O₃ catalysts for methane catalytic combustion[J].Low-Carbon Chemistry and Chemical Engineering,DOI:10.12434/j.issn.2097-2547.20250488.
刘赛,王晓波,张云峰等.n(Pd)/n(Pt)对Pd-Pt/Al₂O₃催化甲烷燃烧性能的影响[J].低碳化学与化工,DOI:10.12434/j.issn.2097-2547.20250488. DOI：

LIU Sai,WANG Xiaobo,ZHANG Yunfeng,et al.Effects of n(Pd)/n(Pt) on performances of Pd-Pt/Al₂O₃ catalysts for methane catalytic combustion[J].Low-Carbon Chemistry and Chemical Engineering,DOI:10.12434/j.issn.2097-2547.20250488. DOI：

摘要

甲烷催化燃烧反应是控制甲烷排放的重要方法。然而，Pd基催化剂在反应工况下存在的烧结失活问题制约了其工业化应用，开发兼具高催化活性和优异抗烧结性能的催化剂是该领域的关键挑战。为阐明Pd-Pt双金属催化剂中

(Pd)/

(Pt)对活性物种尺寸和催化剂催化性能的影响规律，在固定Pd和Pt总负载量（质量分数）为0.46%的条件下，采用浸渍法制备了不同

(Pd)/

(Pt)的Pd-Pt/Al

双金属催化剂，并通过XRD和N

吸/脱附等表征方法研究了催化剂的物化性质。在固定床反应器上研究了催化剂的催化甲烷燃烧性能。结果表明，在

(Pd)/

(Pt) = 12.2的Pd-Pt/Al

双金属催化剂（Pd-Pt/Al

(12.2)）中，Pd/Pt物种为尺寸0.5~2.0 nm的亚纳米团簇，且Pd/Pt物种通过氧桥键优先落位于五配位AlO

位点上。Pd-Pt/Al

(12.2)兼具良好的催化活性和稳定性，其

（甲烷转化率达到50%时的反应温度）和失活速率分别为396 ℃和0.0082%/h。

Abstract

Methane catalytic combustion is a key method for controlling methane emissions. However

the deactivation of Pd-based catalysts due to sintering under reaction conditions limits their industrial application

and the development of catalysts that combine high catalytic activities with excellent anti-sintering properties is a key challenge in the field. To elucidate the effects of

(Pd)/

(Pt) on the sizes of active species and the catalytic performances of Pd-Pt bimetallic catalysts

Pd-Pt/Al

bimetallic catalysts with varying

(Pd)/

(Pt) were prepared by impregnation method

whilst keeping the total loading amount (mass fraction) of Pd and Pt at 0.46%. The physicochemical properties of the catalysts were investigated by characterization methods such as XRD and N

adsorption/desorption. The performances of the catalysts for methane catalytic combustion were investigated in a fixed-bed reactor. The results indicate that in the Pd-Pt/Al

bimetallic catalyst with

(Pd)/

(Pt) = 12.2 (Pd-Pt/Al

(12.2))

the Pd/Pt species consist of sub-nanometre clusters ranging in size from 0.5 nm to 2.0 nm

and the Pd/Pt species are preferentially located at pentacoordinate AlO

sites via oxygen-bridge bonds. Pd-Pt/Al

(12.2) exhibits both good catalytic activity and stability

with

(the reaction temperature at which the methane conversion rate reaches 50%) of 396 °C and deactivation rate of 0.0082%/h.

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Effects of n(Pd)/n(Pt) on performances of Pd-Pt/Al2O3 catalysts for methane catalytic combustion

DOI：10.12434/j.issn.2097-2547.20250488

摘要

Abstract

关键词

Keywords

references

Effects of n(Pd)/n(Pt) on performances of Pd-Pt/Al₂O₃ catalysts for methane catalytic combustion