Effects of W loading amounts on catalytic performances of Ni-W bimetallic catalysts for CH<sub>4</sub>-CO<sub>2</sub> reforming reaction

DUAN Shanshan; LV Yongkang; WANG Xun; REN Ruipeng

doi:10.12434/j.issn.2097-2547.20240083

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Effects of W loading amounts on catalytic performances of Ni-W bimetallic catalysts for CH₄-CO₂ reforming reaction

- Effects of W loading amounts on catalytic performances of Ni-W bimetallic catalysts for CH₄-CO₂ reforming reaction
- Vol. 49, Issue 12, Pages: 12-18(2024)
- 作者机构：
  
  1.太原理工大学省部共建煤基能源清洁高效利用国家重点实验室，山西太原 030024
  2.太原理工大学安全与应急管理工程学院，山西太原 030024
  3.山西焦煤集团有限责任公司，山西太原 030024
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240083
  CLC： TQ426
- Published：25 December 2024，
  
  Received：04 March 2024，
  
  Revised：22 March 2024，
- 稿件说明：
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段姗姗,吕永康,王荀等.W负载量对Ni-W双金属催化剂催化CH₄-CO₂重整反应性能的影响[J].低碳化学与化工,2024,49(12):12-18.

DUAN Shanshan,LV Yongkang,WANG Xun,et al.Effects of W loading amounts on catalytic performances of Ni-W bimetallic catalysts for CH₄-CO₂ reforming reaction[J].Low-carbon Chemistry and Chemical Engineering,2024,49(12):12-18.
段姗姗,吕永康,王荀等.W负载量对Ni-W双金属催化剂催化CH₄-CO₂重整反应性能的影响[J].低碳化学与化工,2024,49(12):12-18. DOI： 10.12434/j.issn.2097-2547.20240083.

DUAN Shanshan,LV Yongkang,WANG Xun,et al.Effects of W loading amounts on catalytic performances of Ni-W bimetallic catalysts for CH₄-CO₂ reforming reaction[J].Low-carbon Chemistry and Chemical Engineering,2024,49(12):12-18. DOI： 10.12434/j.issn.2097-2547.20240083.

摘要

-CO

重整反应是一种可实现CO

资源化利用的途径。CH

-CO

重整反应过程中催化剂的烧结和积炭是制约其工业化应用的主要因素。采用固态研磨法合成了一系列Ni-W双金属催化剂，通过BET、XRD、H

-TPR、H

-TPD、XPS、TG-DTA和Raman分析了催化剂的织构性质、物相组成、活性位点数和积炭，评价了不同W负载量（质量分数，下同）对催化剂催化性能和抗积炭性能的影响。与单金属Ni催化剂相比，W的引入显著减小了活性组分的晶粒尺寸。但在Ni-W双金属催化剂中，随着W负载量的增大，活性组分的晶粒尺寸增大，活性位点数明显减少。其中，Ni2W/SBA-15的初始活性最高，在700 ℃、30000 mL/(g·h)时，CH

和CO

转化率分别为58%和66%。TG-DTA结果表明，Ni6W/SBA-15产生的积炭量最少，反应进行1450 min后，积炭量为3.67%。

Abstract

-CO

reforming reaction is a technology for achieving CO

resource utilization. During CH

-CO

reforming reaction process

the sintering and carbon deposition of catalysts are the main factors restricting their industrialization. A series of Ni-W bimetallic catalysts were synthesized using the solid-state grinding method. The texture properties

phase compositions

number of active sites

and carbon deposition of the catalysts were analyzed by BET

XRD

-TPR

-TPD

XPS

TG-DTA and Raman. The effects of different W loading amounts (mass fraction) on catalytic performances and anti-carbon deposition performances of catalysts were evaluated. Compared with monometallic Ni-based catalysts

the introduction of W significantly reduces the particle size of the active component. However

with the increase of W loading

the particle size of the active component increases and the number of active sites significantly decreases in Ni-W bimetallic catalysts. Among them

the initial activity of the Ni2W/SBA-15 is the highest. At 700 ℃ and 30000 mL/(g·h)

the conversion rates of CH

and CO

are 58% and 66%

respectively. The TG-DTA results show that the Ni6W/SBA-15 produces the least amount of carbon deposition

which is 3.67% after 1450 min.

关键词

CH4-CO2重整双金属催化剂抗积炭性能W负载量

Keywords

CH4-CO2 reformingbimetallic catalystsanti-carbon deposition performanceW loading amounts

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Effects of W loading amounts on catalytic performances of Ni-W bimetallic catalysts for CH4-CO2 reforming reaction

DOI：10.12434/j.issn.2097-2547.20240083

摘要

Abstract

关键词

Keywords

references

Effects of W loading amounts on catalytic performances of Ni-W bimetallic catalysts for CH₄-CO₂ reforming reaction