Chemoselective Hydrogenolysis of Tetrahydropyran-2-methanol to 1,6-Hexanediol over Rhenium-Modified Carbon-Supported Rhodium Catalysts
Chemoselective Hydrogenolysis of Tetrahydropyran-2-methanol to 1,6-Hexanediol over Rhenium-Modified Carbon-Supported Rhodium Catalysts
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DOI：
10.1002/cctc.201000018
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发表时间：
2010-05-01
期刊：
影响因子：
4.5
通讯作者：
Tomishige, Keiichi
中科院分区：
文献类型：
--
作者：
Chen, Kaiyou;Koso, Shuichi;Tomishige, Keiichi
用 Re 物质对 Rh/C 进行修饰，可以将四氢吡喃-2-甲醇化学选择性氢解为 1,6-己二醇。特别是，Rh-ReOx/C（Re/Rh比=0.25）催化剂产生了高收率的1,6-己二醇（84%），并且表现出非常低的过度氢解成1-己醇的活性。在四氢糠醇氢解中使用相同的催化剂也得到高产率的1,5-戊二醇(94%)。表征结果表明，Rh 金属颗粒表面附着有 ReOx 簇的形成。这可以引起ReOx和Rh之间的协同作用，并且四氢吡喃-2-甲醇氢解作用在Rh金属表面和附着的ReOx物质之间的界面上进行。
Modification of Rh/C with Re species enabled chemoselective hydrogenolysis of tetrahydropyran-2-methanol to 1,6-hexanediol. In particular, the Rh-ReOx/C (Re/Rh ratio=0.25) catalyst gave a high yield of 1,6-hexanediol (84%) and showed a very low activity for overhydrogenolysis to 1-hexanol. Using the same catalyst in the hydrogenolysis of tetrahydrofurfuryl alco-hol also gave a high yield of 1,5-pentanediol (94%). Characterization results indicate the formation of ReOx clusters attached on the surface of Rh metal particles. This can cause the synergy between ReOx, and Rh, and the tetrahydropyran-2-methanol hydrogenolysis proceeds on the interface between Rh metal surface and attached ReOx, species.