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Impact of shaping Aquivion PFSA on its catalytic performances

机译:的影响塑造Aquivion交换树脂催化表演

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Over the last three years, a growing amount of reports highlighted the exceptional catalytic performances of Aquivion PFSA in many challenging chemical reactions. To date, all these studies employed Aquivion PFSA in powder form and the impact of shaping Aquivion PFSA on its catalytic performances has never been reported, although this aspect is of prime importance for implementation on a larger scale. Often considered as a matter of practical interest in the current literature, the shaping of a catalyst is actually mandatory and is clearly a key research topic for catalyst design and chemical engineering. Here, we explored the effect of shaping Aquivion PFSA on (1) its catalytic performances (i.e. yield, reaction rate and space time yield), (2) its ease of recovery at the end of the reaction (i.e. filtration, recyclability) and (3) its deactivation rate. In particular, we found that shaping Aquivion PFSA into micropellets was a good compromise (between powder and macropellets) to maintain acceptable catalytic performances while considerably facilitating the recovery of Aquivion PFSA at the end of the reaction. Last but not least, by properly controlling the reaction conditions, it was possible to limit the deactivation of Aquivion PFSA shaped into micropellets, a recurrent problem in catalytic carbohydrate processing.
机译:在过去的三年里,越来越多的报告强调了特殊催化在许多挑战性的Aquivion交换树脂化学反应。在粉末形式和使用Aquivion交换树脂的影响塑造Aquivion交换树脂催化表演从未报道,虽然这方面至关重要实现在更大的规模。视为一种实际的兴趣当前文学,形成的催化剂实际上是强制性的,显然是一个钥匙吗研究课题为催化剂的设计和化学工程。(1)其催化形成Aquivion交换树脂表演(如产量、反应速度和空间时间的收益率),(2)它易于恢复的反应(即过滤、再循环能力)和(3)其失活率。发现,塑造Aquivion交换树脂研究是一个很好的妥协(之间粉和macropellets)维持可接受的催化性能而大大促进经济复苏的Aquivion交换树脂的反应结束。适当地控制反应条件,它有可能限制失活的Aquivion交换树脂的研究,在催化碳水化合物复发的问题处理。

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