Rhenium, although viewed as one of the noble metals with lower-price, has been commonly used as doping element in the bimetallic catalysts due to its middlebrow to activate hydrogen. Its major role as catalyst is less frequently mentioned. In this work, rhenium has been decorated on the surface of activated carbon and used for the selective hydrogenation of dimethyl 1, 4-cyclohexanedicarboxylate (DMCD) to 1, 4-cyclohexanedimethanol (CHDM). Characterizations suggested that ReO_x particles were anchored occupying the surface oxygenated groups on pre-functionalized carbon. Rhenium decoration modified both the textural and chemical properties of the samples. Electrons were easily transferred from Re to the neighboring C atoms as a result of the formation of fine ReO_x particles. Medium strong acid sites were generated and rhenium species in the reduced states could be still maintained under appropriate rhenium dispersion. The moderate hydrogenation ability of rhenium catalyst partially restrained the excessive hydrogenation of CHDM to other by-products. Rational decoration of 5 wt% Re performed the better catalytic performance with complete conversion of diester and 66 % yield of diol. The specific rate reached $9.5\times {10}^2{mmol}_{DMCD}\bullet g_{Re}^{-1}\bullet h^{-1}$ at 220 °C under 10 MPa H₂.

viewed虽然被认为是价格较低的贵金属之一，但由于其具有中等的活化氢的能力，因此一直被用作双金属催化剂中的掺杂元素。很少提及它作为催化剂的主要作用。在这项工作中，rh已被装饰在活性炭的表面上，并用于将1，4-环己烷二甲酸二甲酯（DMCD）选择性氢化为1,4-环己烷二甲醇（CHDM）。表征表明，ReO _x颗粒被锚固，占据了预官能化碳上的表面氧化基团。hen装饰改变了样品的质地和化学性质。由于形成了细小的ReO _x，电子很容易从Re转移到相邻的C原子粒子。产生了中等强度的酸位，并且在适当的dispersion分散状态下，还原态的species物种仍可保持。catalyst催化剂的中等氢化能力部分抑制了CHDM过度氢化成其他副产物。5 wt％Re的合理装饰表现出更好的催化性能，二酯完全转化，二醇收率为66％。具体达到率$9.5\times {10}^2{米米Ø升}_{d\mathrm{中号}Cd}\bullet G_{\mathrm{[R}Ë}^{--\mathrm{1个}}\bullet H^{--\mathrm{1个}}$在220°C和10 MPa H _2下。