Effect of retained chlorine in ENCAT™ 30 catalysts on the development of encapsulated Pd: insights from in situ Pd K, L 3 and Cl K-edge XAS
Effect of retained chlorine in ENCAT™ 30 catalysts on the development of encapsulated Pd: insights from in situ Pd K, L 3 and Cl K-edge XAS
复制标题
ENCAT™ 30 催化剂中残留氯对封装 Pd 发展的影响：来自原位 Pd K、L 3 和 Cl K-edge XAS 的见解
DOI：
10.1080/2055074x.2017.1348711
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Newton M
中科院分区：
文献类型：
--
作者：
Newton M
原位X-射线吸收光谱和PdK、LiI和ClK-EDGE分析表明，在流动溶剂中，™-30催化剂中存在大量的氯，它能严重阻碍Pd纳米粒子(NP)的生长。我们还表明，虽然聚合物包裹保护Pd免受溶剂诱导的Pd纳米颗粒的团聚，但有证据表明，它并不能阻止PdHx通过与水乙醇溶剂的反应形成PdHx，而且，正如所收到的那样，Enat™30 NP催化剂在很大程度上不是由纳米Pd0组成，无论是否存在氯。
In situ X-ray absorption spectroscopy (XAS) and Pd K, LIII, and Cl K-edges shows that Cl can be present in significant amounts in ENCAT™ 30 catalysts and that it can severely retard Pd nanoparticle (NP) development in flowing solvents. We also show that whilst polymeric encapsulation protects the Pd against solvent induced agglomeration of Pd nanoparticles the evidence suggests it does not prevent the formation PdHxthrough reaction with the aqeous ethanol solvent, and that, as received, ENCAT™ 30 NP catalysts are not, for the most part, comprised of nanoparticulate Pd0irrespective of the presence of Cl.