High-throughput discovery of Hf promotion on the stabilisation of hcp Co and Fischer-Tropsch activity
High-throughput discovery of Hf promotion on the stabilisation of hcp Co and Fischer-Tropsch activity
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DOI：
10.1016/j.jcat.2021.02.022
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发表时间：
2021-04
影响因子：
7.3
通讯作者：
Luis Alvarado Rupflin;H. van Rensburg;M. Zanella;Elliot J. Carrington;Rebecca Vismara;A. Grigoropoulos;T. Manning;J. Claridge;A. Katsoulidis;R. Tooze;M. Rosseinsky
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文献类型：
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作者：
Luis Alvarado Rupflin;H. van Rensburg;M. Zanella;Elliot J. Carrington;Rebecca Vismara;A. Grigoropoulos;T. Manning;J. Claridge;A. Katsoulidis;R. Tooze;M. Rosseinsky
采用高通量的实验方法，考察了不同载体上不同助剂对钴基费托合成催化剂稳定性和活性的影响。该方案基于活性相多晶型物、粒度和Co与载体的结晶相的比率的XRD估计。顺序样品库使探索四个钴负载与五个不同的启动子在六个支持材料。在工业条件下评价了在合成气中对老化稳定的催化剂，即显示出最小的粒度或活性相浓度变化。该程序确定了SiC作为载体，赋予催化剂的稳定性和钌和铪的组合，促进HCP公司的稳定。无载体的散装样品的钴与适量的钌和铪显示，HCP公司的形成是独立的支持。在本研究中测试的样品中，hcp含Co催化剂提供了最高的催化活性和C5+选择性，证实了基于代理的高通量方法的有效性。
A proxy-based high-throughput experimental approach was used to explore the stability and activity of Co-based Fischer-Tropsch Synthesis catalysts with different promoters on a variety of supports. The protocol is based on XRD estimation of the active phase polymorph, particle size and ratio of crystalline phases of Co to support. Sequential sample libraries enabled exploration of four Co loadings with five different promoters on six support materials. Catalysts stable to aging in syngas, i.e. displaying minimal change of particle size or active phase concentration, were evaluated under industrial conditions. This procedure identified SiC as a support that confers catalyst stability and that a combination of Ru and Hf promotes the stabilisation of hcp Co. Unsupported bulk samples of Co with appropriate amounts of Ru and Hf revealed that the formation of hcp Co is independent of the support. The hcp Co-containing catalyst afforded the highest catalytic activity and C5+selectivity amongst the samples tested in this study, confirming the effectiveness of the proxy-based high-throughput method.