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Advanced titania composites for efficient CO2 reforming with methane: Statistical method vs. experiment
Journal of CO2 Utilization ( IF 7.2 ) Pub Date : 2020-03-28 , DOI: 10.1016/j.jcou.2020.101160
Mumtaj Shah , Prasenjit Mondal , Ameeya Kumar Nayak , Ankur Bordoloi

The design and optimization of nanocrystalline mesoporous Ni-based catalyst for methane reforming with CO2 were studied using a statistically designed experiment. The Taguchi method based advanced combinatorial experimental design was applied in the development of catalysts by simultaneously varying the seven number of design parameters. The detailed interpretation and the multi-response optimization of the catalyst in terms of deactivation factor, initial activity (%) and catalyst productivity for superior catalytic performance was accomplished by the multi-response signal-to-noise (S/N) ratio analysis combined with the weighting factor. The catalysts were thoroughly characterized by using the BET-BJH, WPXRD, H2-TPR, CHN analysis, DTA-TGA, ICP-MS SEM, TEM, and XPS analysis. The results show a significant improvement in the quality of reforming catalysts. The type of support (titania-alumina mixed oxide) is the major driving force for the sustainable activity of the dry reforming catalyst. Pt amongst the noble metals and Mg from the group of promoters (La, Ce, etc.) were found to be the most influential metals in designing a robust Ni-based catalyst system for the DRM reaction. The optimized catalyst demonstrates excellent stability in time on stream study of 100 h. The different characterization techniques confirm that the optimized catalysts were free from coke deposition and any severe metal sintering. The apparent activation energies of few catalysts were also presented.



中文翻译:

用于甲烷有效重整CO 2的高级二氧化钛复合材料:统计方法与实验

利用统计设计的实验研究了用于CO 2甲烷重整的纳米晶介孔Ni基催化剂的设计和优化。通过同时更改七个设计参数,将基于Taguchi方法的高级组合实验设计应用于催化剂的开发。通过多响应信噪比(S / N)分析的组合,对催化剂的失活因子,初始活性(%)和催化剂生产率进行了详细的解释和多响应优化,从而获得了出色的催化性能。与加权因子。通过使用BET- BJH,WPXRD,H 2彻底表征了催化剂-TPR,CHN分析,DTA-TGA,ICP-MS SEM,TEM和XPS分析。结果表明重整催化剂的质量有显着改善。载体的类型(二氧化钛-氧化铝混合氧化物)是干重整催化剂可持续活性的主要驱动力。在设计用于DRM​​反应的坚固的镍基催化剂体系中,发现贵金属中的Pt和助催化剂(La,Ce等)中的Mg是最具影响力的金属。经过优化的催化剂在100 h的流研究中表现出出色的稳定性。不同的表征技术证实了优化的催化剂没有焦炭沉积和任何严重的金属烧结。还提出了几种催化剂的表观活化能。

更新日期:2020-03-28
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