Analysis of the low-temperature methanol synthesis in a single commercial isothermal Cu-Zn-Al catalyst pellet using the dusty-gas diffusion model

1985 ◽  
Vol 40 (4) ◽  
pp. 671-673 ◽  
Author(s):  
J. Skrzypek ◽  
M. Grzesik ◽  
R. Szopa
Keyword(s):  
Low Temperature ◽  
Diffusion Model ◽  
Methanol Synthesis ◽  
Gas Diffusion ◽  
Dusty Gas ◽  
Catalyst Pellet

A Mass Transport Model for CVD Coating of Optical Fibers

2003 ◽  
Author(s):  
Wei Huang ◽  
Wilson K. S. Chiu
Keyword(s):  
Mass Transport ◽  
Diffusion Model ◽  
Optical Fibers ◽  
Peclet Number ◽  
Flow Reactor ◽  
Transport Model ◽  
Gas Diffusion ◽  
Transfer Model ◽  
Continuous Stirred Tank Reactor ◽  
Péclet Number

Carbon coated optical fibers are produced by the chemical vapor deposition process which includes multi-species mass transport with chemical reactions. A proper numerical model of this process will help elucidate the basic mechanisms and optimize the process to improve coating quality. A heat transfer model has been developed in our research group. We are now developing an applicable chemical kinetics model to include mass transport with gas phase and surface reactions. Several different chemical reactor models have been tried, including a continuous-stirred tank reactor (CSTR) model, a plug flow reactor (PFR) model and a multi-component diffusion model with the Maxwell-Stefan approximations. We found that in reactor conditions with well-mixed or large mass Peclet number, the CSTR and PFR models validate well with experimental results. But a multi-component gas diffusion model is needed for low mass Peclet number conditions. The model has been extended to a wider range of temperatures necessary for this optical fiber coating process.

scholarly journals Structural and kinetical studies on the supercritical CO2 dried Cu/ZnO catalyst for low-temperature methanol synthesis

2016 ◽  
Vol 295 ◽  
pp. 160-166 ◽  
Author(s):  
Fanzhi Meng ◽  
Qingde Zhang ◽  
Guohui Yang ◽  
Ruiqin Yang ◽  
Yoshiharu Yoneyama ◽  
...  
Keyword(s):  
Low Temperature ◽  
Methanol Synthesis ◽  
Supercritical Co2

Effect of modifiers on the performance of Cu-ZnO-based catalysts for low-temperature methanol synthesis

2014 ◽  
Vol 42 (6) ◽  
pp. 704-709 ◽  
Author(s):  
Xiao-bo TANG ◽  
Tsubaki NORITATSU ◽  
Hong-juan XIE ◽  
Yi-zhuo HAN ◽  
Yi-sheng TAN
Keyword(s):  
Low Temperature ◽  
Methanol Synthesis

Urea-derived Cu/ZnO catalyst being dried by supercritical CO2 for low-temperature methanol synthesis

Fuel ◽  
2020 ◽  
Vol 268 ◽  
pp. 117213 ◽  
Author(s):  
Peipei Zhang ◽  
Yuya Araki ◽  
Xiaobo Feng ◽  
Hangjie Li ◽  
Yuan Fang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Methanol Synthesis ◽  
Supercritical Co2

Active state of copper in catalysts for low-temperature methanol synthesis

1980 ◽  
Vol 14 (4) ◽  
pp. 413-416 ◽  
Author(s):  
O. Yu. Prudnikova ◽  
O. V. Makarova ◽  
T. M. Yurieva
Keyword(s):  
Low Temperature ◽  
Methanol Synthesis ◽  
Active State
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