Selective hydrogenation catalyst made via heat-processing of biogenic Pd nanoparticles and novel 'green' catalyst for Heck coupling using waste sulfidogenic bacteria
Selective hydrogenation catalyst made via heat-processing of biogenic Pd nanoparticles and novel 'green' catalyst for Heck coupling using waste sulfidogenic bacteria
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DOI：
10.1016/j.apcatb.2021.121059
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发表时间：
2022-01-20
影响因子：
22.1
通讯作者：
Macaskie，Lynne E.
中科院分区：
文献类型：
--
作者：
Mikheenko，Iryna P.;Bennett，James A.;Macaskie，Lynne E.
利用产硫细菌将可溶性Pd(II)还原为具有催化活性的Pd纳米颗粒(NPs)，合成了一种多相Pd催化剂--生物矿化钯纳米颗粒(Bio-Pd)。对由脱硫弧菌制备的生物钯(电池重量百分比为5%或20%)进行热处理(加工)，并将含有Pd-NPs的负载型Pd催化剂固定在大型球形中空结构上。2-丁炔-1，4-二醇的加氢速度比工业催化剂慢约5倍(约为天然生物钯的两倍)，但对烯烃的选择性高，符合关键的工业标准。在Heck反应中，虽然BIO-Pd在肉桂酸乙酯合成中的反应速度与商业Pd/C相当，但热处理的BIO-Pd的活性可以忽略不计。D.脱硫-Bio-Pd被用来自无关初级修复工艺的废嗜酸产硫细菌(CAS)制备的BIO-Pd取代。这在肉桂酸乙酯合成中具有与商业5wt%Pd/C相当的活性，标志着一条经济、可扩展的催化剂制造路线。
A heterogeneous Pd catalyst, biologically-mineralized palladium nanoparticles (bio-Pd), was synthesized using sulfidogenic bacteria which reduced soluble Pd(II) to catalytically-active Pd-nanoparticles (NPs). Heat treatment (processing) of bio-Pd (5 or 20 wt% on the cells) made byDesulfovibrio desulfuricansevolved supported Pd-catalyst comprising Pd-NPs held on large spherical hollow structures. The rate of hydrogenation of 2-butyne-1,4-diol was ~5-fold slower than for a commercial catalyst (~twice that of native bio-Pd), but with high selectivity to the alkene, fulfilling a key industrial criterion. In the Heck reaction, while bio-Pd showed a comparable reaction rate in ethyl cinnamate synthesis to that achieved by commercial Pd/C, heat-treated bio-Pd had negligible activity.D. desulfuricansbio-Pd was replaced by bio-Pd made using a consortium of waste acidophilic sulfidogenic bacteria (CAS) supplied from an unrelated primary remediation process. This gave comparable activity to commercial 5 wt% Pd/C in ethyl cinnamate synthesis, signposting an economic, scalable route to catalyst manufacture.