Nuclearity effects in supported, single-site Fe(ii) hydrogenation pre-catalysts†‡,Dalton Transactions

当前位置： X-MOL 学术 › Dalton Trans. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Nuclearity effects in supported, single-site Fe(ii) hydrogenation pre-catalysts†‡
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-07-17 00:00:00 , DOI: 10.1039/c8dt02720j
Ryan R. Langeslay _{1,

2,

3,

4} , Hyuntae Sohn _{1,

2,

3,

4} , Bo Hu _{1,

2,

3,

4,

5} , Jacob S. Mohar _{1,

2,

3,

4} , Magali Ferrandon _{1,

2,

3,

4} , Cong Liu _{1,

2,

3,

4} , Hacksung Kim _{1,

2,

3,

4,

6} , A. Jeremy Kropf _{1,

2,

3,

4} , Ce Yang _{1,

2,

3,

4} , Jens Niklas _{1,

2,

3,

4} , Oleg G. Poluektov _{1,

2,

3,

4} , E. Ercan Alp _{2,

3,

4,

7} , Patricia Ignacio-de Leon _{2,

3,

4,

8} , Alfred P. Sattelberger _{1,

2,

3,

4} , Adam S. Hock _{1,

2,

3,

4,

5} , Massimiliano Delferro _{1,

2,

3,

4}

Affiliation

Dimeric and monomeric supported single-site Fe(II) pre-catalysts on SiO₂ have been prepared via organometallic grafting and characterized with advanced spectroscopic techniques. Manipulation of the surface hydroxyl concentration on the support influences monomer/dimer formation. While both pre-catalysts are highly active in liquid-phase hydrogenation, the dimeric pre-catalyst is ∼3× faster than the monomer. Preliminary XAS experiments on the H₂-activated samples suggest the active species are isolated Fe(II) sites.

中文翻译：

负载型单中心Fe（ii）加氢预催化剂中的核效应† ‡

SiO ₂上的二聚和单体负载单中心Fe（II）预催化剂已通过有机金属接枝制备，并通过先进的光谱技术进行了表征。载体上表面羟基浓度的控制影响单体/二聚体的形成。尽管两种预催化剂在液相加氢中均具有很高的活性，但二聚体预催化剂比单体快约3倍。对H ₂活化的样品进行的初步XAS实验表明，活性物种是分离的Fe（II）位点。

更新日期：2018-07-17

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11