Effects of preparation methods on catalytic performances of Cu/Ce0.8Zr0.2O2 catalysts for methanol steam reforming to produce hydrogen

XU Qingwen; KE Jucang; LI Rui; LI Peng; WANG Fengxia; MA Qingxiang; ZHAO Tiansheng

doi:10.12434/j.issn.2097-2547.20240135

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Effects of preparation methods on catalytic performances of Cu/Ce_0.8Zr_0.2O₂ catalysts for methanol steam reforming to produce hydrogen

- Effects of preparation methods on catalytic performances of Cu/Ce_0.8Zr_0.2O₂ catalysts for methanol steam reforming to produce hydrogen
- Vol. 49, Issue 9, Pages: 33-40(2024)
- 作者机构：
  
  1.宁夏大学化学化工学院省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏银川 750021
  2.宁夏大学测试分析中心,宁夏银川 750021
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240135
  CLC： TQ426
- Published：25 September 2024，
  
  Received：02 April 2024，
  
  Revised：06 May 2024，
- 稿件说明：
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徐青文,柯举仓,李蕊等.制备方法对Cu/Ce_0.8Zr_0.2O₂催化剂催化甲醇水蒸气重整制氢性能的影响[J].低碳化学与化工,2024,49(09):33-40.

XU Qingwen,KE Jucang,LI Rui,et al.Effects of preparation methods on catalytic performances of Cu/Ce_0.8Zr_0.2O₂ catalysts for methanol steam reforming to produce hydrogen[J].Low-carbon Chemistry and Chemical Engineering,2024,49(09):33-40.
徐青文,柯举仓,李蕊等.制备方法对Cu/Ce_0.8Zr_0.2O₂催化剂催化甲醇水蒸气重整制氢性能的影响[J].低碳化学与化工,2024,49(09):33-40. DOI： 10.12434/j.issn.2097-2547.20240135.

XU Qingwen,KE Jucang,LI Rui,et al.Effects of preparation methods on catalytic performances of Cu/Ce_0.8Zr_0.2O₂ catalysts for methanol steam reforming to produce hydrogen[J].Low-carbon Chemistry and Chemical Engineering,2024,49(09):33-40. DOI： 10.12434/j.issn.2097-2547.20240135.

摘要

制备方法会影响催化剂中Cu物种种类、分散性及其与载体之间的相互作用。分别采用沉积沉淀法、氨蒸法、浸渍法和共沉淀法制备了以Ce

0.8

0.2

固溶体为载体、Cu负载量（质量分数）为15%的Cu/Ce

0.8

0.2

催化剂。采用XRD、N

物理吸/脱附、N

O滴定和SEM等对催化剂的物相组成、织构性质、Cu分散度和微观结构等进行了表征，并采用固定床反应器评价了催化剂的甲醇水蒸气重整制氢催化性能。结果表明，与其他3种方法制备的Cu/Ce

0.8

0.2

催化剂相比，采用沉积沉淀法制备的Cu/Ce

0.8

0.2

催化剂（Cu/Ce

0.8

0.2

-DP）具有相对最大的比表面积（82.5 m

/g）和Cu比表面积（206.0 m

/g），以及相对最高的Cu分散度（30.5%）。在温度为250 ℃、常压、

(去离子水):

(甲醇)为1.3:1.0和液时空速为6 mL/(g·h)的条件下反应24 h，Cu/Ce

0.8

0.2

-DP表现出相对最优的催化性能，其甲醇转化率为95.2%，产氢速率为286.8 mmol/(g·h)，CO选择性为0.86%。

Abstract

The preparation methods can affect the type and dispersion of Cu species

as well as the interaction between Cu species and supports in catalysts. Cu/Ce

0.8

0.2

catalysts with Ce

0.8

0.2

sosolid as the support and Cu loading (mass fraction) of 15% were prepared by deposition precipitation

ammonia evaporation

impregnation and co-precipitation methods

respectively. The phase compositions

texture properties

Cu dispersions and microstructures of the catalysts were characterized by XRD

physical adsorption/desorption

O titration

SEM

etc. And the catalytic performances of the catalysts for methanol steam reforming to prod

uce hydrogen were evaluated in a fixed-bed reactor. The results show that compared with the Cu/Ce

0.8

0.2

catalysts prepared by another three methods

the Cu/Ce

0.8

0.2

catalyst (Cu/Ce

0.8

0.2

-DP) prepared by deposition precipitation method has the largest specific surface area (82.5 m

/g) and Cu specific surface area (206.0 m

/g)

as well as the highest Cu dispersion (30.5%). Under the reaction conditions of 250 ℃

atmospheric pressure

(deionized water):

(methanol) of 1.3:1.0 and liquid space velocity of 6 mL/(g·h) for 24 h

Cu/Ce

0.8

0.2

-DP shows relatively optimal catalytic performance with methanol conversion rate of 95.2%

hydrogen production rate of 286.8 mmol/(g·h) and CO selectivity of 0.86%.

关键词

甲醇水蒸气重整Cu基催化剂制备方法铈锆固溶体Cu分散度

Keywords

methanol steam reformingCu-based catalystspreparation methodscerium-zirconium sosolidCu dispersion

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