Gas-phase catalysis by platinum-group metals—past, present, and future
Gas-phase catalysis by platinum-group metals—past, present, and future
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铂族金属气相催化——过去、现在和未来
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
S. Golunski
中科院分区：
文献类型：
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作者：
S. Golunski
在清洁生产和清洁销毁化学品方面，铂族金属(PGM)是许多现代气相工艺的首选催化剂。这些金属本质上是稳定的，即使在高度分散的情况下，但它们具有足够的表面反应性来激活一系列不同的分子物种。传统上用于在稳态条件下催化单一反应，它们正越来越多地被应用于更复杂的过程。它们催化两个能量相反的反应的能力意味着，高耗能和高耗能的过程可以结合在一个高效的反应器中。此外，PGMS的电子性质可用于M-MO复合材料，其中金属不提供活性中心，而是改变金属氧化物的固态化学，使其具有催化活性。
Platinum-group metals (PGMs) are the chosen catalysts for many modern gas-phase processes, in both the clean production and the clean destruction of chemicals. These metals are inherently stable, even when highly dispersed, and yet they have enough surface reactivity to activate a range of different molecular species. Traditionally used to catalyze single reactions under steady-state conditions, they are increasingly being applied to more complex processes. Their ability to catalyze two energetically opposing reactions means that energy-consuming and energy-wasting processes can be combined in a single efficient reactor. Furthermore, the electronic properties of PGMs can be exploited in M-MO composites, in which the metal does not provide the active sites, but modifies the solid-state chemistry of the metal oxide to make it catalytically productive.