iridium-nickel alloy | 12502-19-1

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 英文名称: iridium-nickel alloy
• 英文别名: iridium-nickel；nickel-iridium；Iridium;nickel；iridium;nickel
• CAS: 12502-19-1
• 化学式: IrNi
• 分子量: 250.91
• InChiKey: DDQZSLVVXJOWDT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  2
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  nickel(II) chloride hexahydrate 、 氯化铱(III) 水合物 在 氢气 作用下， 以 水 为溶剂， 生成 iridium-nickel alloy
  参考文献：
  名称：

  Ring opening of 1,3-dimethylcyclohexane on Ir catalysts

  摘要：

  The ring opening (RO) of 1,3-dimethylcyclohexane (DMCH) has been studied on a series of Ir catalysts. This molecule has been used as a model feed to compare catalysts that could be employed in the treatment of gasoline feedstocks for improving octane number (ON), while keeping low aromatics content and low vapor pressure. By changing the support and by adding promoters, we have been able to modify the product distribution and determine which catalyst modifications can be more effective. For example, Ir/SiO2 catalyzes the opening of unsubstituted C-C bonds and yields products with a high degree of branching and consequently high ON. By contrast, Ir/Al2O3 is less selective and yields products with lower ON. This catalyst is at the same time more active and results in excessive secondary hydrogenolysis, producing increasing amounts of light-molecular weight products as the conversion increases. K and Ni were investigated as potential promoters to inhibit the secondary hydrogenolysis and make the Ir/Al2O3 catalyst more selective towards the cleavage of unsubstituted C-C bonds. It was found that while the addition of K decreased the secondary hydrogenolysis it did not change the ratio of substituted/unsubstituted C-C bond cleavage and had little effect in the resulting octane number of the product. By contrast, the addition of Ni was found to improve octane number without excessively increasing the vapor pressure of the mixture. (C) 2007 Published by Elsevier B.V.

  DOI：

  10.1016/j.molcata.2007.05.002

文献信息

• O species-decorated graphene shell encapsulating iridium–nickel alloy as an efficient electrocatalyst towards hydrogen evolution reaction
  作者：Shipeng Gong、Changlai Wang、Peng Jiang、Kang Yang、Jian Lu、Minxue Huang、Shi Chen、Junzheng Wang、Qianwang Chen

  DOI：10.1039/c9ta04361f

  日期：——

  electrocatalysts, graphene possesses two distinguished merits of superior electrical conductivity and anticorrosion performance. However, graphene and graphene oxide are electrocatalytically inert in hydrogen evolution reaction (HER) due to their electronic properties. Herein, for the first time, we report a highly active and stable graphene oxide electrocatalyst for the HER. The graphene oxide-encapsulated

  与其他电催化剂相比，石墨烯具有卓越的导电性和防腐性能两个显着优点。然而，由于石墨烯和氧化石墨烯的电子性质，它们在氢释放反应（HER）中是电催化惰性的。在此，我们首次报道了用于HER的高活性和稳定的氧化石墨烯电催化剂。通过对掺Ir的Ni-BTC进行热解制备了氧化石墨烯包裹的IrNi合金催化剂（IrNi @ OC），其对HER表现出优异的电催化活性，在95 mV的低过电势下可达到100 mA cm -2。 0.5 MH 2 SO 4和10 mA cm -2在1 M KOH中在27 mV电压下工作。此外，这些结果优于商业化的Pt / C。DFT计算表明，电子从IrNi合金核转移到石墨烯壳，当石墨烯被O物种修饰时，该过程变得更加容易，从而调节了碳原子的电子结构，并使它们有利于C–的形成。 H键，从而降低了HER的ΔG H *。