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每周分享：Effect of support-active phase interaction on the catalyst activity and selectivity in deoxyenation of triglycerides

今天给大家分享的是2014年2月份《Applied Catalysis B:Environmental》上发表的一篇名为：Effect of support-active phase interaction  on the catlyst activity and selectivity in deoxygenation of triglycerides

文章摘要如下:

Three industrially important supports,SiO2,TiO2 and Al2O3,were used for preparation of NiMo catalysts(3.3 wt.% Ni and 15.0 wt.% Mo) and in deoxygenation of rapeseed oil in presence of hydrogen (3.5 MPa) at 260-300℃ and liquid feed weight-hourly   space velocity in the range 2-8 h-1.Due to the same method of preparation and activition (sulfidation) of the catalysts,the final  properties were affected mainly by the differences in the nature of supports as well as their properties,such as specific surface   areas,pore size distribution or acidity.Most notably the dispersion of the active phase decreased in the following order Sio2>Al2O3>TiO2. As a result,the SiO2-supported NiMo catalyst exhibited smaller extent of hydrogenation reactions and a larger extent of decarboxylation.On the other hand ,the TiO2-supported NiMo catalyst exhibited  increased selectivity to hydrodeoxygenation products,plausible due to the larger active phase cluster size and broad pore size distribution.The results provide clear evidence that even with the conventional hydrotreating active phase,such as sulfided NiMo,the selectivity can be  fine-tuned by support selection and modificatin

该文章中材料表征采用的是美国麦克仪器AutoChem2920

详情请参考下面链接：

http:www.sciencedirect.com/science/article/pii/S092633731300028