Infrared study of the adsorption of formic acid on evaporated nickel film and interaction of the chemisorbed species with formic acid
Infrared study of the adsorption of formic acid on evaporated nickel film and interaction of the chemisorbed species with formic acid
复制标题
蒸发镍膜上甲酸吸附以及化学吸附物质与甲酸相互作用的红外研究
DOI：
10.1016/s0021-9517(66)80064-7
复制
发表时间：
1966
影响因子：
7.3
通讯作者：
K. Hirota
中科院分区：
文献类型：
--
作者：
K. Kishi;T. Ogawa;K. Hirota
在 4000 至 400 cm−1 范围内测量了蒸发镍膜上吸附的 HCOOH 和 DCOOD 的红外光谱，并研究了吸附物质的反应性。将镍表面暴露于 HCOOH，在 2900、1583、1390、1345 和 795 cm−1 处给出了化学吸附物质以及物理吸附物质的五个谱带。 1715 cm−1 处的物种。 DCOOD 的化学吸附物质在 2180、1575、1060?、1325 和 780 cm−1 处给出了谱带。化学吸附物质被指定为 (HCOO−1)ads。化学吸附的 (HCOO−)ads 不会因 D2 的暴露而发生变化，但在室温下添加 DCOOD 后，它很容易被 (DCOO−)ads 取代。研究了加热引起的吸附物质光谱的变化。讨论了金属催化剂下甲酸脱氢反应的机理以及由 (HCOO−)ads 和 (HCOOH)adsis 形成中间配合物的机理。
The infrared spectra of HCOOH and DCOOD adsorbed on evaporated nickel film were measured in the 4000- to 400-cm−1range and the reactivity of the adsorbed species was investigated.Exposure of the nickel surface to HCOOH gave the five bands for the chemisorbed species at 2900, 1583, 1390, 1345, and 795 cm−1as well as for the physically adsorbed species at 1715 cm−1. The chemisorbed species of DCOOD gave the bands at 2180, 1575, 1060?, 1325, and 780 cm−1.The chemisorbed species is assigned to (HCOO−1)ads. The chemisorbed (HCOO−)adsdid not change through the exposure of D2but it was easily displaced by the (DCOO−)adsupon addition of DCOOD at room temperature. The changes in the spectra of the adsorbed species caused by heating were studied. The results are discussed in relation to the mechanism of the dehydrogenation reaction of formic acid by metal catalysts and the formation of an intermediate complex from (HCOO−)adsand (HCOOH)adsis proposed.