Hydrogenation of Sunflower Oil with Novel Pd Catalysts Supported on Structured Silica

详细信息    查看全文

• 作者：M&eacute ; lanie Plourde ; Khaled Belkacemi ; and Joseph Arul
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2004
• 出版时间：May 12, 2004
• 年：2004
• 卷：43
• 期：10
• 页码：2382 - 2390
• 全文大小：148K
• 年卷期：v.43,no.10(May 12, 2004)
• ISSN：1520-5045

文摘

Hydrogenations of sunflower oil over novel structured catalysts with pore sizes ranging from 3to 20 nm, Brunauer-Emmett-Teller specific surface areas of 710-1200 m²/g, and metalconcentrations on the support ranging from 0.7 to 5.0% (w/w) were investigated and comparedto a commercial Ni catalyst. Catalyst supports with pore diameters between 7 and 8 nm weremore active than supports with lower pore diameters. At the same metal loading and meanpore diameter, the activity was also higher with supports having smaller pore volumes andsurface areas, suggesting that the pore depth and geometry of the supports may play animportant role in the activity of the supported catalysts. The activity of hydrogenation dependedon the Pd content, with maxima in the concentration range of 0.8-1.2% (w/w). A Pd catalyst ata Pd loading of 1% (w/w) had as much activity as a Ni catalyst but was more selective towardcis-monoenes with similar selectivity toward TFA at equal IV reductions. Hydrogenation ofsunflower oil in the catalysts was described by a lumped kinetic model.