Adams' catalyst, also known as platinum dioxide, is usually represented as platinum (IV) oxide hydrate, PtO 2 •H 2 O. It is a catalyst for hydrogenation and hydrogenolysis in organic synthesis. [1] . This dark brown powder is commercially available.

2025年3月21日 · Platinum dioxide, also known as Adams catalyst, is a dark brown powder, a hydrated form of platinum (IV) oxide (PtO2), produced by heating chloroplatinic acid (H2PtCl6) with sodium nitrate (NaNO3). Platinum nitrate is produced, and this decomposes to Platinum (IV) oxide with evolution of NO2 and oxygen.

PtO2 is Hydrophilite structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Pt4+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing PtO6 octahedra. The corner-sharing octahedral tilt angles are 55°. All Pt–O bond lengths are 2.04 Å.

使用硼氢化钠还原氯铂酸或 PtO₂，可以制备出更具活性的 铂黑催化剂。 【注意事项】不必预防氧化，但与 H₂ 接触后生成的铂黑必须按照易燃物处理。 必须遵循处理 氢化反应 时的常规预防措施。 PtO₂ 常常参与很多氢化和 氢解反应。 虽然 PtO₂ 本身不是一种活性催化剂，但被 H₂ 还原后就成为具有活性的铂黑。 在酸性、中性或碱性条件下，PtO₂ 催化烯烃的还原反应可以得到不同的结果，炔烃被还原成为相应的烷烃。 在 PtO₂ 的催化下，重氮、叠氮、肟基等可以被氢化还原得 …

PtO2具有α和β两种品型，其中a-PtO2是著名的多相Adams催化剂，能氢化多 种基团，常用于烯键、羟基、醛基、亚胺、芳香硝基及芳环的氢化或氢解，所需反应条件温和（室温、常压）。

(Color online) Atomic structures of the PtO, PtO1.33, and PtO2 compositions, in which the Pt and O atoms are indicated by gray (large) and red (small) balls. The unit cells are indicated by...

2012年2月1日 · Based on our results and analysis, we suggest that Pt and O atoms tends to form octahedron motifs in PtOx even at lower O composition by the formation of Pt-Pt bonds. (Color online) Atomic...

PtO2 is Hydrophilite structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Pt4+ is bonded to six equivalent O2- atoms to form a mixture of edge and corner-sharing PtO6 octahedra. The corner-sharing octahedral tilt angles are 53°.

2017年9月5日 · Platinum serves as a major component in the automotive catalyst, which oxidizes CO and residual hydrocarbons to CO 2. In addition, NO is oxidized when the catalyst is operating in lean burn,...

We studied the electronic properties of beta-platinum dioxide ( {\beta}-PtO2), a catalytic material, based on density functional theory.