Deoxydehydration with Molecular Hydrogen over Ceria-Supported Rhenium Catalyst with Gold Promoter
Deoxydehydration with Molecular Hydrogen over Ceria-Supported Rhenium Catalyst with Gold Promoter
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DOI：
10.1021/acscatal.6b01864
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发表时间：
2016-08
期刊：
影响因子：
12.9
通讯作者：
Shuhei Tazawa;Nobuhiko Ota;M. Tamura;Y. Nakagawa;K. Okumura;K. Tomishige
中科院分区：
文献类型：
--
作者：
Shuhei Tazawa;Nobuhiko Ota;M. Tamura;Y. Nakagawa;K. Okumura;K. Tomishige
金纳米颗粒助催化剂和二氧化铈载体催化剂使得能够使用H2作为Re催化脱氧脱水（DODH）的还原剂，将邻位二醇转化为烯烃，其活性高于使用非H2还原剂的均相Re催化剂，并且具有相当的选择性。ReOx-Au/CeO 2催化剂中合适的Au颗粒尺寸（约10 nm）对于活化H2同时保留DODH产物中的C → C键特别有效。甘油转化为烯丙醇的产率为91%，且每Re原子的TON达到300。该系统适用于其它底物，如丁二烯（1，3-丁二烯的产率为81%）。
Gold nanoparticle cocatalyst and ceria support catalyst enabled the use of H2 as a reductant for Re-catalyzed deoxydehydration (DODH), converting vicinal diols to olefins with higher activity than homogeneous Re catalysts using non-H2 reductants and with comparable selectivity. The suitable particle size (∼10 nm) of Au in ReOx-Au/CeO2 catalyst was especially effective for activating H2 while retaining the C═C bond in DODH products. Glycerol was converted to allyl alcohol in 91% yield, and the TON per Re atom reached 300. This system is applicable to other substrates such as erythritol (81% yield of 1,3-butadiene).