Optimization of methanol steam reforming over a Au/CuO-CeO₂ catalyst by statistically designed experiments

详细信息	查看全文 | 推荐本文 |

• 作者：Sutarawadee Monyanon^a ; Apanee Luengnaruemitchai^b ; ^c ; Sangobtip Pongstabodee^a ; ^c ; ^{sangobtip@gmail.com}
• 关键词：Full factorial design ; CCRD response surface ; Optimization ; Methanol steam reforming
• 刊名：Fuel Processing Technology
• 出版年：2012
• 期刊代码：36_03783820
• 类别：ce
• 出版时间：April, 2012
• 卷：96
• 期：Complete
• 页码：160-168
• 文件大小：1097 K

摘要

The catalytic performance for steam reforming of methanol over 5 wt.%Au/CuO-CeO₂ catalysts prepared by deposition-precipitation was investigated using a statistical set of experiments in order to optimize the methanol conversion with minimal carbon monoxide (CO) selectivity. The operating temperature, steam to methanol (S/M) ratio, liquid feed rate and the catalyst weight to He flow rate (W/F) ratio, were evaluated with a full 2⁴ factorial design experimental matrix with four central points. The liquid feed rate displayed a much greater influence on the response, masking the importance of the other factors. At a fixed low liquid feed rate, only the operating temperature had a significant influence on the methanol conversion, whilst this plus the S/M ratio and their interaction influenced the CO selectivity. A central composite rotatable design was then used to approximate the optimal conditions by simultaneously considering the methanol conversion and CO selectivity. The optimum theoretical conditions were found to lie within an operating temperature of ~ 295 掳C to ~ 307 掳C and an S/M ratio of ~ 1.82 to 2.00 (at a liquid feed rate of 1 cm³ h^鈭?#xA0;1 and a W/F ratio of 0.17 g s cm^鈭?#xA0;3), in close agreement with the experimental results.