Intrinsic Kinetics of Methane-Steam Reforming on Catalyst Coating

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Intrinsic Kinetics of Methane-Steam Reforming on Catalyst Coating

更新时间：2025-07-09

- Intrinsic Kinetics of Methane-Steam Reforming on Catalyst Coating
- Vol. 43, Issue 5, Pages: 109-113(2009)
- 作者机构：
  
  重庆大学动力工程学院,重庆,400030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ013.2
- Online First：10 May 2009，
  
  Published：2009
- 稿件说明：
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Intrinsic Kinetics of Methane-Steam Reforming on Catalyst Coating[J]. 2009, 43(5): 109-113.
DOI：

Intrinsic Kinetics of Methane-Steam Reforming on Catalyst Coating[J]. 2009, 43(5): 109-113. DOI：

摘要

采用冷喷涂技术在不锈钢薄板上制备了涂层催化剂

研究了在涂层催化剂上甲烷蒸汽重整的本征动力学.涂层催化剂为Ni/r-Al

在消除内外扩散影响的条件下

在859.7～1 018.7 K范围内进行甲烷水蒸气重整的实验

并利用最小二乘法

由实验数据确定双速率动力学模型参数.一氧化碳生成速率指前因子为1.08×10

mol/(h·g·kPa

0.89

)

活化能为178.98 kJ/mol; 二氧化碳生成速率指前因子为1.73×10

mol/(h·g·kPa

2.06

))

活化能为139.00 kJ/mol.F统计检验的结果表明

所得本征动力学模型的复相关指数大于 0.9

且 F 统计量大于置信域为 99%的临界 F 统计量的10倍以上

适用于涂层催化剂.

Abstract

Cold-spray technology was used to prepare catalyst coating on a stainless steel plate

and the analysis on intrinsic kinetics of methane-steam reforming on coating catalyst Ni/r-Al

was performed. The experiment of methane-steam reforming in a plate micro-channel reactor was conducted at the temperature from 859.7 K to 1 018.7 K when the effect of internal and external diffusion on reaction was eliminated. From the experimental data

the parameters for the double rate kinetics model were determined by using least squares method to conduct linear regression. The pre-exponential factor and the apparent activation energy of carbon monoxide formation was 1.08×10

mol/(h·g·kPa

0.89

)and 178.98 kJ/mol

respectively

and the pre-exponential factor and the apparent ac

tivation energy of carbon dioxide formation was 1.73×10

mol/(h·g·kPa

2.06

)and 139.00 kJ/mol. The F statistic results show that the correlation index of the intrinsic kinetics model was greater than 0.9 and the F was 10 times greater than the critical one with the confidence domain of 99%.

关键词

Keywords

references

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WANG Jingang, LI Chengyue, LIU Hui, et al.Intrinsic kinetics of methane steam reforming over a Ni/α-Al2O3 catalyst [J]. Journal of Beijing University of Chemical Technology, 2004, 32(1): 11-15.

李绍芬, 高文新, 廖晖, 等. 甲烷水蒸气催化转化的动力学模型[J]. 化工学报,1981(1): 51-59.

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贺黎明, 沈召军. 甲烷的转化和利用[M]. 北京:化学工业出版社, 2005.

李绍芬.化学与催化反应工程[M]. 北京:化学工业出版社, 1986: 192-197.

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