Study on catalytic performance of Ni-La bimetallic catalyst for CO<sub>2</sub>-CH<sub>4</sub> reforming to syngas

ZHANG Guopei; WANG Cong; ZHANG Xiaoyang; LI Zhaomin

doi:10.12434/j.issn.2097-2547.20240380

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Study on catalytic performance of Ni-La bimetallic catalyst for CO₂-CH₄ reforming to syngas

更新时间：2025-06-23

- Study on catalytic performance of Ni-La bimetallic catalyst for CO₂-CH₄ reforming to syngas
- Vol. 50, Issue 6, Pages: 25-33(2025)
- 作者机构：
  
  1.石河子大学化学化工学院，新疆石河子 832003
  2.石河子大学兵团能源发展研究院，新疆石河子 832003
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240380
  CLC： TQ426
- Received：08 September 2024，
  
  Revised：01 November 2024，
  
  Published：25 June 2025
- 稿件说明：
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张国佩,王聪,张肖阳等.镍-镧双金属催化剂CO₂-CH₄重整制合成气催化性能研究[J].低碳化学与化工,2025,50(06):25-33.

ZHANG Guopei,WANG Cong,ZHANG Xiaoyang,et al.Study on catalytic performance of Ni-La bimetallic catalyst for CO₂-CH₄ reforming to syngas[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(06):25-33.
张国佩,王聪,张肖阳等.镍-镧双金属催化剂CO₂-CH₄重整制合成气催化性能研究[J].低碳化学与化工,2025,50(06):25-33. DOI： 10.12434/j.issn.2097-2547.20240380.

ZHANG Guopei,WANG Cong,ZHANG Xiaoyang,et al.Study on catalytic performance of Ni-La bimetallic catalyst for CO₂-CH₄ reforming to syngas[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(06):25-33. DOI： 10.12434/j.issn.2097-2547.20240380.

摘要

和CH

催化干重整反应意义重大，一方面能够实现两种温室气体回收，另一方面其反应产物H

和CO又是费托合成的重要原料气。Ni基催化剂因具有较高催化活性和较低成本受到广泛关注。以MCM-41为载体，采用溶胶-凝胶法制备了La

NiO

/MCM-41系列双金属催化剂，考察了焙烧温度、Ni含量（质量分数，下同）、

(La)/

(Ni)和反应温度对其CH

-CO

催化重整性能的影响，并通过BET、SEM-EDX、XRD、H

-TPR、TG-DSC、Raman和TPO等技术对反应前/后催化剂进行了表征。结果表明，尖晶石型La

NiO

是金属Ni主要存在形式且Ni分散性良好，随着Ni含量增大，催化剂比表面积和孔容迅速减小。Ni含量和反应温度对双金属催化剂催化性能影响最为显著。在700 ℃、0.10 MPa和18000 mL/(h·g)反应条件下，5%La

NiO

/MCM-41经过100 h反应后，CH

和CO

转化率较初始均有不同程度下降，但其平衡转化率仍分别达到了72.89%和81.08%。反应后催化剂表面出现了明显积炭，以碳纳米管为主，且随着反应时间延长碳纳米管尺寸逐渐增大，最终催化剂表面金属Ni活性位点被碳纳米管所覆盖，导致催化剂失活。

Abstract

The catalytic dry reforming of CO

and CH

holds significant importance. On one hand

it enables the recycling of two major greenhouse gases. On the other hand

its reaction products

and CO

serve as critical feedstocks for Fischer-Tropsch synthesis. Nickel-based catalysts have attracted widespread attention due to their high catalytic activity and low cost. La

NiO

/MCM-41 serials bimetallic catalysts were prepared using the sol-gel method

with MCM-41 as the support. The effects of calcination temperature

Ni content (mass fraction

the same below)

(La)/

(Ni)

and reaction temperature on its CH

-CO

catalytic reforming performance were investigated. The catalysts before/after reaction were characterized using BET

SEM-EDX

XRD

-TPR

TG-DSC

Raman

and TPO techniques. The results show that spinel La

NiO

is the primary form of nickel in the catalyst and exhibites good dispersion. As the Ni content increases

the specific surface area and pore volume of the catalysts decrease rapidly. Ni content and reaction temperature are found to have the most significant impact on the catalytic performance of bimetallic catalysts. Under reaction conditions of 700 ℃

0.10 MPa and 18000 mL/(h·g)

the conversion rates of CH

and CO

after 100 h reaction show varying degrees of decline compared to the initial values. However

their equilibrium conversion rates still reach 72.89% and 81.08%

respectively. Post-reaction characterization reveals significant carbon deposition on the catalyst surface

primarily in the form of carbon nanotubes. The size of these carbon nanotubes increases as the reaction

time prolongs

eventually covering the active Ni sites on the catalyst surface and leading to catalyst deactivation.

关键词

Keywords

references

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Study on catalytic performance of Ni-La bimetallic catalyst for CO2-CH4 reforming to syngas

DOI：10.12434/j.issn.2097-2547.20240380

摘要

Abstract

关键词

Keywords

references

Study on catalytic performance of Ni-La bimetallic catalyst for CO₂-CH₄ reforming to syngas